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Solutions Search - Other Sensors

LTC2063 Micropower Precision Oxygen Sensor

Jul 27th 2017
This low power precision gas sensor circuit operates in an oxygen level range of 0% to 30%, with a nominal output of 1V in normal atmospheric oxygen concentrations (20.9%) when the gas sensor has been fully initialized. Total active power consumption is less than 2.1μA on a single rail supply. Since ...

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 

 

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 

 

System Monitor with Instrumentation-Grade Accuracy Used to Measure Relative Humidity

Aug 18th 2011
A psychrometer is a type of hygrometer, a device that measures relative humidity. It uses two thermometers, one dry (dry bulb) and one covered in a fabric saturated with distilled water (wet bulb). Air is passed over both thermometers, either by a fan or by swinging the instrument, as in a “sling psychrometer.” A psychrometric ...

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 

 

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 

 

Micro Power Oxygen Sensor

Sep 21st 2006
Micro Power Oxygen Sensor takes advantage of low and clean startup current characteristics and wide supply voltage range, 1.8V to 16V range. ...

Circuit 

 

High Accuracy Oxygen Sensor

Nov 17th 2005
High Accuracy Oxygen Sensor. Accuracy is achieved using a transimpedance approach. Reduction in noise gain gives a reduction in output offset error from 50mv to 500µa. ...

Circuit 

 

LTC6078 pH Probe Amplifier

Aug 16th 2005
pH Probe amplifiers require buffer amplifiers with an input impedance greater than 10^13 ohms. Without loading the probe, an output of approximately 60mV/pH unit is produce. The thermistor is added to provide first order compensation for the inherent temperature coefficient of the pH probe output. ...

Circuit LTspice 

 

Hall Sensor Amplifier Optimizes Sensitivity vs Supply Current

Mar 1st 2004
Voltage across HALL-ELEMENT bridge is reduced to minimize bridge current from 2.5mA or 230µA then a dual LT6011 DC precision low current low drift and Vos OP AMP is used in an instrumentation AMP configuration at a gain of 101 to give a sensitivity of 40mV/mT. ...

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 

 

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 

 

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 

 

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 

 

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 

 

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 

 

Relative Humidity Sensor

Mar 2nd 1999
This sensor is a capacitive element that changes value with humidity. By charging the sensor with a fixed current for a fixed time interval, a voltage is developed that is directly proportional to the sensor capacitance value. ...

Circuit 

 

Relative Humidity Sensor Digitizer-Time Domain Bridge Based

Jul 15th 1998
Humidity Transducer Digitizer Has Grounded Sensor, 1% Accuracy; Trim Scheme Allows Low Tolerance Sensors. Clocked Q1A-Q1B Configurations Produce Ramp Outputs. Q1A Ramp Slope Varies with Humidity Sensor Value, Q1B Ramp Represents Sensor’s Offset (0% RH does not equal 0pF). C1, C2 Digitize Ramp Times. Gate Extracts Time Difference, ...

Circuit 

 

Relative Humidity Sensor Digitizer-Charge Pump Based

Jul 15th 1998
Hygrometer Digitizer Has 0.3% Accuracy, Although Sensor Must Float Off-Ground. Humidity Sensor Determines Charge Delivered to A1 Integrator During Each Charge Pump Cycle. Resultant A1 Output Ramp Is Reset by Level Triggered C1 via Q1. Output Frequency, Taken at C1, Varies with Humidity ...

Circuit 

 

Relative Humidity Sensor Digitizer-Hetrodyne Based

Jun 5th 1998
Hetrodyne Based Humidity Transducer Digitizer Has Grounded Sensor, 2% Accuracy. Capacitively Sensed Hygrometer Beats Humidity Dependent Oscillator (C1) Against Stable Oscillator O1. Difference Frequency Is Demodulated by Q1, Converted to Pulse Form at C2. Counters Scale Output for 0kHz to 1kHz = 0% to 100% Relative Humidity ...

Circuit 

 

Humidty Sensor To Data Aquisition System Interface

Jan 1st 1987
The circuit shown in the schematic features zero drift operational amplifiers (LTC1250 and LTC1050) and a precision instrumentation switched capacitor block (LTC1043). This design will maintain excellent DC accuracy down to microvolt levels. This method was chosen over the use of a true RMS-to-DC or log converter because of ...

Circuit