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Solutions Search - Temperature Sensors

LTC2063 RTD Sensor with ±1°C Precision

Jul 27th 2017
This low power platinum resistance temperature detector (RTD) sensor circuit draws only 35μA total supply current on a minimum 2.6V rail, and is accurate to within ±1°C at room temperature, including all error intrinsic to the Vishay PTS Class F0.3 Variant RTD. It covers the temperature ...

Circuit LTspice 

 

LTC6261 Audio Headphones Bridge Driver

May 22nd 2017
The LTC®6261/LTC6262/LTC6263 are single/dual/quad operational amplifiers with low noise, low power, low supply voltage, and rail-to-rail inputs and outputs. They are unity gain stable with capacitive loads up to 1nF. They feature 30MHz gain-bandwidth product, 7V/μs slew rate while consuming only 240μA of supply current ...

Circuit LTspice 

 

LTC2984 Thermocouple Measurement with Automatic Cold Junction Compensation

Jun 17th 2015
The LTC®2984 measures a wide variety of temperature sensors and digitally outputs the result, in °C or °F, with 0.1°C accuracy and 0.001°C resolution. The LTC2984 can measure the temperature of virtually all standard (type B, E, J, K, N, S, R, T) or custom thermocouples, automatically compensate for cold ...

Circuit 

 

LTC2983 Thermocouple Measurement with Automatic Cold Junction Compensation

Nov 10th 2014
The LTC®2983 measures a wide variety of temperature sensors and digitally outputs the result, in °C or °F, with 0.1°C accuracy and 0.001°C resolution. The LTC2983 can measure the temperature of virtually all standard (type B, E, J, K, N, S, R, T) or custom thermocouples, automatically compensate for cold ...

Circuit 

 

Product How-to: Precise Wireless Temperature Sensor Powers Itself

Jun 13th 2014
In case you missed it, LTC’s Kris Lokere recently wrote an article for EDN describing a circuit combining Dust, Energy Harvesting, and precision temperature sensing. Specifically, it describes a reference circuit showcasing: Dust Networks wireless - LTP5901-IPM SmartMesh IP Mote Energy Harvesting - LTC3330 Nanopower ...

Blog Post 

 

LTC2933 Low Cost Multipoint Temperature Control System

Apr 2nd 2014
The LTC®2933 is an EEPROM configurable voltage supervisor which can simultaneously monitor up to six power supply voltage inputs. Each voltage detector offers programmable over/undervoltage thresholds in various ranges and increments. ...

Circuit 

 

Motor Protection/Regulation

Aug 18th 2011
The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature ...

Circuit 

 

Computer Voltage and Temperature Monitoring

Aug 18th 2011
The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature ...

Circuit 

 

DC1767A - LTC2997 | Internal/Remote Temperature Sensor

Aug 5th 2011
DC1767A - Demo Board for:LTC2997 - Remote/Internal Temperature Sensor ...

Demo Board LTspice 

 

Remote CPU/ASIC/FPGA Temperature Sensor

Jul 7th 2011
The LTC2997 is a high-accuracy analog output temperature sensor. It converts the temperature of an external sensor or its own temperature to an analog voltage output. A built-in algorithm eliminates errors due to series resistance between the LTC2997 and the sensor diode. ...

Circuit 

 

Internal Temperature Sensor

Jul 7th 2011
The LTC2997 is a high-accuracy analog output temperature sensor. It converts the temperature of an external sensor or its own temperature to an analog voltage output. A built-in algorithm eliminates errors due to series resistance between the LTC2997 and the sensor diode. ...

Circuit 

 

LTC2997 Temperature to Bits

Jul 7th 2011
The LTC2997 is a high-accuracy analog output temperature sensor. It converts the temperature of an external sensor or its own temperature to an analog voltage output. A built-in algorithm eliminates errors due to series resistance between the LTC2997 and the sensor diode. ...

Circuit 

 

Wind Direction and Airflow Measurement

Sep 3rd 2010
The LTC2990 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC. The internal 10ppm/°C reference minimizes the number of supporting ...

Circuit 

 

Liquid-Level Indicator

Sep 3rd 2010
The LTC2990 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC. The internal 10ppm/°C reference minimizes the number of supporting ...

Circuit 

 

Motor Protection/Regulation

Sep 3rd 2010
The LTC2990 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC. The internal 10ppm/°C reference minimizes the number of supporting ...

Circuit 

 

Wet Bulb Psychrometer

Sep 3rd 2010
The LTC2990 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC. The internal 10ppm/°C reference minimizes the number of supporting ...

Circuit 

 

Oscillator/Reference Oven Temperature Regulation

Sep 3rd 2010
The LTC2990 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC. The internal 10ppm/°C reference minimizes the number of supporting ...

Circuit 

 

Temperature to Frequency Converter

May 12th 2010
3% Linearity from –20°C (Fout = 20kHz) to 75°C (Fout = 25kHz) The LTC6990 is a precision silicon oscillator with a programmable frequency range of 488Hz to 2MHz. It can be used as a fixed-frequency or voltage-controlled oscillator (VCO). The LTC6990 is part of the TimerBlox family of versatile silicon timing devices. ...

Circuit 

 

LTC6990 Full Range Temperature to Frequency Converter. 16kHz to 1kHz from –20°C to 80°C

May 12th 2010
The LTC®6990 is a precision silicon oscillator with a programmable frequency range of 488Hz to 2MHz. It can be used as a fixed-frequency or voltage-controlled oscillator (VCO). The LTC6990 is part of the TimerBlox® family of versatile silicon timing devices. A single resistor, RSET, programs the LTC6990’s internal ...

Circuit 

 

Ratiometric Sensor to Pulse Width, Non-Inverting Response

May 12th 2010
The LTC6992 is a silicon oscillator with an easy-to-use analog voltage-controlled pulse width modulation (PWM) capability. The LTC6992 is part of the TimerBlox family of versatile silicon timing devices. A single resistor, RSET, programs the LTC6992’s internal master oscillator frequency. The output frequency is determined ...

Circuit 

 

2-Terminal Temperature-to-Current Thermometer Suitable for Use at the End of Long Wire Runs

Apr 22nd 2009
By adding the LT3092 to the thermistor kit along with three 0.1% accuracy resistors and one fi nal trim, a very accurate 2-terminal temperature-to-current converter can be built. This circuit measures 700μA operating current at 0°C, dropping by 2μA every degree until 100°C, at which point the current measures 500μA. The ...

Circuit 

 

2-Terminal Temperature-to-Current Thermometer Suitable for Use at the End of Long Wire Runs

Apr 22nd 2009
By adding the LT3092 to a thermistor kit along with three 0.1% accuracy resistors and one final trim, a very accurate 2-terminal temperature-to-current converter can be built. This circuit measures 700μA operating current at 0°C, dropping by 2μA every degree until 100°C, at which point the current measures 500μA. The obvious ...

Circuit 

 

How To Make A Thermocouple Meter With The LTC2492

Mark Thoren - Staff Scientist Sep 15th 2008
This video explains how to use the 24-bit LTC2492 2-channel delta-sigma analog-to-digital converter with Easy Drive Input Current Cancellation to make thermocouple measurements. The ADCs features and benefits are discussed, as is cold junction compensation; this is followed by a lab demonstration of the LTC2492 thermocouple ...

Video 

 

Temperature Monitoring with an NTC Thermistor While Measuring Load Current and LTC4151 Supply Current

Jan 25th 2008
The LTC4151 is a high side power monitor that operates over a wide voltage range of 7V to 80V. In default operation mode, the onboard 12-bit ADC continuously measures high side current, input voltage and an external voltage. Data is reported through the I2C interface when polled by a host. The LTC4151 can also perform on-demand ...

Circuit 

 

High Voltage/Current and Temperature Monitoring

Jun 15th 2007
The LTC2990 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC. The internal 10ppm/°C reference minimizes the number of supporting ...

Circuit 

 

LTC2485 Complete Type K Thermocouple Measurement System (I2C) with Cold Junction Compensation

Sep 6th 2005
The LTC2485 is ideal for direct digitization of thermocouples and other low voltage output sensors. The input has a typical offset error of 500nV (2.5μV max) offset drift of 10nV/°C and a noise level of 600nVRMS. The only signal conditioning is a simple surge protection network. In any thermocouple meter, the cold junction ...

Circuit 

 

Thermocouple Thermometer with Cold Junction Compensation

Aug 16th 2005
The LTC2997 is a high-accuracy analog output temperature sensor. It converts the temperature of an external sensor or its own temperature to an analog voltage output. A built-in algorithm eliminates errors due to series resistance between the LTC2997 and the sensor diode. ...

Circuit 

 

0°C to 100°C Linear RTD Amplifier with 90°C Overtemperature Alarm

Aug 16th 2005
The LTC6078 is a dual, low offset, low noise operational amplifiers with low power consumption and rail-to-rail input/output swing. Input offset voltage is trimmed to less than 25μV and the CMOS inputs draw less than 50pA of bias current. The low offset drift, excellent CMRR, and high voltage gain make it a good choice for ...

Circuit 

 

Type K Thermocouple Signal Conditioner with ±190V Protection from Accidental Contact and Cold Junction Compensation

Aug 16th 2005
Thermocouple wires are intended to be electrically floating in order to detect temperature by producing the Seebeck voltage created by two dissimilar metals. This small voltage is amplified to an easily measurable level by an amplifier. To protect the input terminals of the amplifier in the event that the thermocouple is shorted ...

Circuit 

 

Complete Type K Thermocouple Measurement System (SPI) with Cold Junction Compensation

May 6th 2005
The LTC2484 is ideal for direct digitization of thermocouples and other low voltage output sensors. The input has a typical offset error of 500nV (2.5μV max) offset drift of 10nV/°C and a noise level of 600nVRMS. The only signal conditioning is a simple surge protection network. In any thermocouple meter, the cold junction ...

Circuit 

 

RTD and Thermocouple Remote Temperature Digitizer

Apr 1st 2004
The LTC2449 is commonly used with thermocouples and RTDs as shown in this circuit. Thermocouple outputs produce very small changes (tens of microvolts per degree C) and the output will be negative if the thermocouple is colder than the “cold junction” connection from the thermocouple to the copper traces on the PCB. The ...

Circuit 

 

LTC2057 Differential Thermocouple Amplifier

Dec 9th 2003
The LTC2057 is a high voltage, low noise, zero-drift operational amplifier that offers precision DC performance over a wide supply range of 4.75V to 36V or 4.75V to 60V for the LTC2057HV. Offset voltage and 1/f noise are suppressed, allowing this amplifier to achieve a maximum offset voltage of 4μV and a DC to 10Hz input ...

Circuit 

 

LTC6081/LT1025 Type K Thermocouple Signal Conditioner with ±350V Protection from Accidental Contact and Cold Junction Compensation

Dec 9th 2003
A high input impedance amplifier permits the use of large valued input resistors and retains signal accuracy. This is very useful for protecting both the amplifier and cold junction compensator in thermocouple applications as the sense element can often be inadvertently connected to destructive voltage potentials. The 1MΩ ...

Circuit 

 

Type K Thermocouple 10mV/°C Thermometer with Positive Output

Dec 9th 2003
The LT1025 is a micropower thermocouple cold junction compensator for use with type E, J, K, R, S, and T thermocouples. It utilizes wafer level and post-package trimming to achieve 0.5°C initial accuracy. Special curvature correction circuitry is used to match the “bow” found in all thermocouples so that accurate ...

Circuit 

 

Full-Bridge Amplification Using Autozero Amplifiers to Reduce Input Referred Noise

Mar 5th 2002
This circuit shows an example of a simple amplification scheme. This example produces a differential output with a common mode voltage of 2.5V, as determined by the bridge. The use of a true three amplifier instrumentation amplifier is not necessary, as the LTC2430/LTC2431 have common mode rejection far beyond that of most ...

Circuit 

 

Full-Bridge Amplification Using a Resistor Arrays to Provide Precise Matching in Excitation Amplifier

Mar 5th 2002
This example provide excitation using resistor arrays to produce precise gain. The circuit is configured to provide 10V and –5V excitation to the bridge, producing a common mode voltage at the input to the LTC2430/LTC2431 of 2.5V, maximizing the AC input range for applications where induced 60Hz could reach amplitudes up to ...

Circuit 

 

10°C to 40°C Thermistor Thermometer

Oct 26th 2001
The LT1789 is a micropower, precision instrumentation amplifiers that are optimized for single supply operation from 2.2V to 36V. The quiescent current is 95μA max, the inputs common mode to ground and the output swings within 110mV of ground. The gain is set with a single external resistor for a gain range of 1 to 1000 for ...

Circuit 

 

Single 5V Supply Linearized 0°C to 400°C Platinum RTD Amplifier

Jul 12th 2001
The LTC2053 is a high precision instrumentation amplifier. The CMRR is typically 116dB with a single or dual 5V supply and is independent of gain. The input offset voltage is guaranteed below 10μV with a temperature drift of less than 50nV/°C. The LTC2053 is easy to use; the gain is adjustable with two external resistors, ...

Circuit LTspice 

 

5V Powered, Single Supply Current Source for –50°C to 600°C Platinum RTD

Feb 1st 2001
The LT1880 op amp brings high accuracy input performance and rail-to-rail output swing to the SOT-23 package. Input offset voltage is trimmed to less than 150μV and the low drift maintains this accuracy over the operating temperature range. Input bias current is an ultralow 900pA maximum. ...

Circuit 

 

Single Supply Current Source for Platinum RTD

Feb 1st 2001
The LT1800's Precision and low bias input stage is used to good advantage in Fig. 5 Single Supply Current Source for Platinum RTD circuit. R4 and C1 stabilize the circuit making it insensitive to cable characteristics. Output is 1.00V at 0ºC and its gain factor is 3.85mV/ºC. ...

Circuit 

 

Temperature To Frequency Converter

Jan 30th 2001
This circuit directly converts temperature to digital data. In this case, a thermistor sensor biases the RSET pin. The LTC1799 frequency output is predictable, although nonlinear. The inverse RSET vs frequency relationship combines with the thermistor’s nonlinear characteristic to give Figure 8’s data. The curve is nonlinear, ...

Circuit 

 

Differential Bridge Amplifier with Gain Programmed through the Serial Interface and Analog to Digital Conversion (Standby Current Less than 100μA)

Apr 4th 2000
The LTC6915 is a precision programmable gain instrumentation amplifier. The gain can be programmed to 0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, or 4096 through a parallel or serial interface. The CMRR is typically 125dB with a single 5V supply with any programmed gain. The offset is below 10μV with a temperature ...

Circuit 

 

Single 2.7V to 20V Supply Current Source for –50°C to 600°C Platinum RTD

Apr 4th 2000
The LT6010 op amp combines low noise and high precision input performance with low power consumption and rail-to-rail output swing. Input offset voltage is trimmed to less than 35mV. The low drift and excellent long-term stability guarantee a high accuracy over temperature and over time. The 110pA maximum input bias current ...

Circuit 

 

Pseudodifferential Multichannel Bridge Digitizer and Digital Cold Junction Compensation

Mar 15th 2000
This circuit enables pseudodifferential measurements of several bridge transducers and absolute temperature measurement. Consecutive readings are performed on each side of the bridge by selecting the appropriate channel on the LTC2428. Each output is digitized and the results digitally subtracted to obtain the pseudodifferential ...

Circuit 

 

2-Channel ADC Measures Differential Temperature from Bridge Configured RTDs that Eliminates Drop in Connecting Wire

Feb 4th 2000
The LTC2402 is a 2-channel 2.7V to 5.5V micropower 24-bit analog-to-digital converters with an integrated oscillator, 4ppm INL and 0.6ppm RMS noise. These ultrasmall devices use delta-sigma technology and a new digital filter architecture that settles in a single cycle. This eliminates the latency found in conventional DS converters ...

Circuit 

 

2-Channel ADC Measures Differential Temperature from Bridge Configured RTDs

Feb 4th 2000
The LTC2402 is a 2-channel 2.7V to 5.5V micropower 24-bit analog-to-digital converters with an integrated oscillator, 4ppm INL and 0.6ppm RMS noise. These ultrasmall devices use delta-sigma technology and a new digital filter architecture that settles in a single cycle. This eliminates the latency found in conventional DS converters ...

Circuit 

 

Remote Platinum RTD 0°C to 800°C Temperature Digitizer using 5V Supply

Feb 4th 2000
The LTC2402 is a 2-channel 2.7V to 5.5V micropower 24-bit analog-to-digital converters with an integrated oscillator, 4ppm INL and 0.6ppm RMS noise. These ultrasmall devices use delta-sigma technology and a new digital filter architecture that settles in a single cycle. This eliminates the latency found in conventional DS converters ...

Circuit 

 

2-Channel ADC Measures Differential Temperature from Stacked Half Bridge Platinum RTD that Eliminates Half the Excitation Current and the Matching Requirements of a Full Bridge

Feb 4th 2000
The LTC2402 is a 2-channel 2.7V to 5.5V micropower 24-bit analog-to-digital converters with an integrated oscillator, 4ppm INL and 0.6ppm RMS noise. These ultrasmall devices use delta-sigma technology and a new digital filter architecture that settles in a single cycle. This eliminates the latency found in conventional DS converters ...

Circuit 

 

High Resolution Battery-Powered Robust Type K Thermocouple Signal Conditioning Amplifier with Cold Junction Compensation

Nov 23rd 1999
The circuit is used as a plug-in adapter for common digital multimeters and is completely portable. This circuit employs the LT1025 thermocouple compensator to improve accuracy over a wide range of ambient conditions and is mounted close to the thermocouple connection points for optimal thermal tracking. It precludes the need ...

Circuit 

 

Differential Bridge Amplifier

Nov 23rd 1999
The LTC2050HV are zero-drift operational amplifi ers available in the 5- or 6-lead SOT-23 and SO-8 packages. The LTC2050 operates from a single 2.7V to 6V supply. The LTC2050HV operates on supplies from 2.7V to ±5.5V. The current consumption is 800μA and the versions in the 6-lead SOT-23 and SO-8 packages offer power shutdown ...

Circuit 

 

Single Supply Type K Thermocouple Signal Conditioning Amplifier with Cold Junction Compensation

Nov 23rd 1999
The LTC2050 is a zero-drift precision chopper stabilized operational amplifier available in the 5- or 6-lead SOT-23 and SO-8 packages. It minimizes board area while providing uncompromising DC performance, including 3mV (max) DC offset and 30nV/°C (max) DC offset drift. It operates from a 2.7V supply while still supporting ...

Circuit 

 

Bridge Reversal Eliminates 1/f Noise and Offset Drift of a Low Noise, Non-Autozeroed, Bipolar Amplifier

Sep 13th 1999
This circuit gives 14nV noise level (or 19 effective bits) over a 10mV span. Bridge reversal eliminates 1/f noise and offset drift of a low noise, non-autozeroed, bipolar amplifier. The LTC2440 is a high speed 24-bit No Latency delta sigma ADC with 5ppm INL and 5μV offset. It uses proprietary delta-sigma architecture enabling ...

Circuit 

 

Platinum RTD Digitizer Accurate within 1° Over 0°C to 100°C

Jun 24th 1999
Platinum RTD Value Is Linearly Converted to Period by LTC1799. Logic and Second LTC1799 Clock Digitize Period into Output Data Bursts. Bootstrapping Pin Capacitance is used to Permit Remotely Located Sensor. ...

Circuit 

 

Remote Half Bridge Digitizer Platinum RTD with Noise Suppression on Reference

May 27th 1999
The LTC2414/LTC2418 are 8-/16-channel (4-/8-differential) micropower 24-bit ΔΣ analog-to-digital converters. They operate from 2.7V to 5.5V and include an integrated oscillator, 2ppm INL and 0.2ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single ...

Circuit 

 

Full-Bridge Amplification Using a Single Amplifier

May 27th 1999
This example shows a single amplifier being used to produce single-ended gain. This topology is best used in applications where the gain setting resistor can be made to match the temperature coefficient of the strain gauges. If the bridge is composed of precision resistors, with only one or two variable elements, the reference ...

Circuit 

 

Simple Platinum RTD Temperature Measurement Using 5V Supply

Sep 16th 1998
The LTC2400 is a 2.7V to 5.5V micropower 24-bit converter with an integrated oscillator, 4ppm INL and 0.3ppm RMS noise. It uses delta-sigma technology and provides single cycle settling time for multiplexed applications. Through a single pin the LTC2400 can be configured for better than 110dB rejection at 50Hz or 60Hz ±2%, ...

Circuit 

 

High Resolution Type S Thermocouple Digitizer with Improved Cold Junction Compensation

Sep 16th 1998
This simple interface circuit that demonstrates the practicality of direct thermocouple connection to the LTC2400 using low output voltage thermocouples (a Type S thermocouple, as shown, produces a full-scale output voltage of 18mV). This circuit uses the LT1025, a micropower thermocouple cold junction compensator, to sense ...

Circuit 

 

Platinum RTD Signal Conditioner with Curvature Correction

Jan 1st 1998
The value of the resistance of the RTD sensor is converted to a voltage by running a constant current, 50uA, through it. As the sensor heats the resistance increases and unbalances the bridges of 1K resistors. The amplifier restores balance by sourcing more current into the lower fixed 1K resistor thus producing an increasing ...

Circuit 

 

2°C to 400°C Platinum RTD Signal Conditioner with Curvature Correction from 5.6V to 10V Supply

Jan 1st 1998
The LT1006 is the first precision single supply operational amplifier. Its design has been optimized for single supply operation with a full set of specifications at 5V. Specifications at ±15V are also provided. The LT1006 has a low offset voltage of 20μV, drift of 0.2μV/°C, offset current of 120pA, gain of ...

Circuit 

 

A Galvanically Isolated Thermistor Digitizer

Dec 3rd 1997
The LTC1799 is a precision oscillator that is easy to use and occupies very little PC board space. The oscillator frequency is programmed by a single external resistor (RSET). The LTC1799 has been designed for high accuracy operation (≤1.5% frequency error) without the need for external trim components. ...

Circuit 

 

Pilot Light Flame Detector with Low-Battery Lockout using a Type R Thermocouple

Sep 22nd 1997
The LTC1541 combine a micropower amplifier, comparator and bandgap reference in an 8-pin package. The part operates from a single 2.5V to 12.6V or dual ±1.25V to ±6.3V supply with a typical supply current of 5µA. Both the op amp and comparator feature a common mode input voltage range that extends from the negative supply ...

Circuit 

 

Measuring Seven RTD Temperatures with One Reference Resistor and One Reference Current

Jun 25th 1997
The LTC2408 is 8-channel 2.7V to 5.5V micropower 24-bit A/D converters with an integrated oscillator, 4ppm INL and 0.3ppm RMS noise. They use delta-sigma technology and provide single cycle digital filter settling time (no latency delay) for multiplexed applications. The first conversion after the channel is changed is always ...

Circuit 

 

Measuring Seven Platinum RTD Temperatures with One Reference Resistor and One Reference Current

Jun 25th 1997
The LTC2428 is a 8-channel 2.7V to 5.5V micropower 20-bit A/D converters with an integrated oscillator, 8ppm INL and 1.2ppm RMS noise. It uses a delta-sigma technology and provide single cycle digital filter settling time (no latency delay) for multiplexed applications. The first conversion after the channel is changed is always ...

Circuit 

 

Battery Powered (Li-Ion) Platinum RTD Signal Conditioner with Curvature Correction

Nov 26th 1996
The LT2078 is a micropower dual op amp in 8-pin small outline, standard surface mount package, and LT2079 is a micropower quad op amp offered in the standard 14-pin surface mount package. Both devices are optimized for single supply operation at 5V. ±15V specifications are also provided. ...

Circuit 

 

50MHz Thermistor RMS to DC Converter Using 5V Supply

Aug 17th 1995
The LT1014 is the first precision quad operational amplifier which directly upgrades designs in the industry standard 14-pin DIP LM324/LM348/OP-11/4156 pin configuration. It is no longer necessary to compromise specifications, while saving board space and cost, as compared to single operational amplifiers. ...

Circuit 

 

5V Powered, Linearized Platinum RTD 0°C to 400°C ±0.05°C Signal Conditioner

Aug 17th 1995
The LT1014 is the first precision quad operational amplifier which directly upgrades designs in the industry standard 14-pin DIP LM324/LM348/OP-11/4156 pin configuration. It is no longer necessary to compromise specifications, while saving board space and cost, as compared to single operational amplifiers. ...

Circuit 

 

Single 5V Supply Precision Linearized 0°C to 400°C Platinum RTD Signal Conditioner

Aug 17th 1995
The LTC6943 is a monolithic, charge-balanced, dual switched capacitor instrumentation building block. A pair of switches alternately connects an external capacitor to an input voltage and then connects the charged capacitor across an output port. The internal switches have a break-before-make action. An internal clock is provided ...

Circuit 

 

Thermistor Liquid Flowmeter

Aug 17th 1995
The LT1014 is the first precision quad operational amplifier which directly upgrades designs in the industry standard 14-pin DIP LM324/LM348/OP-11/4156 pin configuration. It is no longer necessary to compromise specifications, while saving board space and cost, as compared to single operational amplifiers. ...

Circuit 

 

50MHz Thermistor RMS to DC Converter using a dual switched capacitor instrumentation building block

Aug 17th 1995
The LTC6943 is a monolithic, charge-balanced, dual switched capacitor instrumentation building block. A pair of switches alternately connects an external capacitor to an input voltage and then connects the charged capacitor across an output port. The internal switches have a break-before-make action. An internal clock is provided ...

Circuit 

 

50MHz Thermistor RMS to DC Converter

Nov 16th 1992
The LTC1043 is a monolithic, charge-balanced, dual switched capacitor instrumentation building block. A pair of switches alternately connects an external capacitor to an input voltage and then connects the charged capacitor across an output port. The internal switches have a break-before-make action. An internal clock is provided ...

Circuit 

 

Linear 0°C to 220°C Thermistor Thermometer Powered by 5V Supply

Nov 16th 1992
The LT1006 is the first precision single supply operational amplifier. Its design has been optimized for single supply operation with a full set of specifications at 5V. Specifications at ±15V are also provided. The LT1006 has a low offset voltage of 20μV, drift of 0.2μV/°C, offset current of 120pA, gain of ...

Circuit 

 

Single 5V Supply Precision Linearized 0°C to 400°C Platinum RTD Signal Conditioner

Nov 16th 1992
The LTC1043 is a monolithic, charge-balanced, dual switched capacitor instrumentation building block. A pair of switches alternately connects an external capacitor to an input voltage and then connects the charged capacitor across an output port. The internal switches have a break-before-make action. An internal clock is provided ...

Circuit 

 

Acoustic Thermometry Measures Temperature To 0.1 Degree

Dec 1st 1990
Start Clock Launches Acoustic Pulse into Measurement Path, Sets Width Decode Flip-Flop High. Acoustic Paths Return Pulse, Amplified by Receiver, Trips Trigger, Resetting Flip-Flop. Resultant “Q” Width Output, Representing Path’s Temperature Dependent Transit Time, is Converted to Temperature Reading by Microprocessor. ...

Circuit 

 

Platinum RTD Signal Conditioner with Curvature Correction

Jan 1st 1987
The left stage forms a stable precision current source by establishing the reference voltage across a precision resistor, and about half of this current passes through the sensor. The right opamp provides an amplification of the resistance difference between the sensor and a fixed precision resistor to generate a temperature ...

Circuit 

 

5V Powered Thermistor Heating/Cooling Automatic Thermostat

Jan 1st 1987
The LTC1040 is a monolithic CMOS dual comparator manufactured using Linear Technology’s enhanced LTCMOSTM silicon gate process. Extremely low operating power levels are achieved by internally switching the comparator ON for short periods of time. The CMOS output logic holds the output information continuously while not consuming ...

Circuit 

 

Micropower Thermocouple Signal Conditioner with Cold Junction Compensation

Jan 1st 1987
A thermistor, shown as R3, is used to monitor the cold junction temperature. Its resistance becomes smaller as the cold junction temperature increases. An increase in cold junction temperature will reduce the output voltage of the Type J thermocouple by 52uV/C. The voltage reference and scaling of resistor values creates an ...

Circuit 

 

Single 5V Supply Linearized 0°C to 400°C Platinum RTD Signal Conditioner

Jan 1st 1987
The LTC1051 is a high performance, low cost dual/quad zero-drift operational amplifiers. The unique achievement of the LTC1051/LTC1053 is that they integrate on chip the sample-and-hold capacitors usually required externally by other chopper amplifiers. Further, the LTC1051/LTC1053 offer better combined overall DC and AC performance ...

Circuit 

 

Kelvin-Sensed Temperature Sensor Amplifier for –50°C to 150°C Platinum RTD from 10V Reference

Jan 1st 1987
The LT1012 is an internally compensated universal precision operational amplifier which can be used in practically all precision applications. The LT1012 combines picoampere bias currents (which are maintained over the full –55°C to 125°C temperature range), microvolt offset voltage (and low drift with time and temperature), ...

Circuit 

 

Temperature-to-Frequency Converter

Jan 1st 1987
Precision oscillator structure uses SCR effect to discharge integration capacitor. A temperature dependent device (LM134) effects the integrator trip point to form a variable interval. An output transistor detects the reset action and forms a logic pulse. ...

Circuit 

 

Platinum RTD 2°C TO 220°C Signal Conditioner with Curvature Correction

Jan 1st 1987
The LT1078 is a micropower dual op amp in 8-pin packages including the small outline surface mount package that is optimized for single supply operation at 5V. ±15V specifications are also provided. ...

Circuit 

 

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