Solutions Search - Zero-Drift Amplifiers

Signal Conditioning for High Impedance Sensors

Glen Brisebois - Applications Engineer - Signal Conditioning Sep 22nd 2015
Abstract Dealing with high impedance sources and maintaining high impedance inputs without compromising reliability has its own set of challenges. This article offers qualitative and quantitative discussions of issues associated what high impedence circuits, what types of sensors are high impedance, and what devices are available ...

 

LTC2644 An Opto-Isolated, PWM Regulated 4mA to 20mA Process Controller

Aug 4th 2014
The LTC®2644 is a family of dual 12-, 10-, and 8-bit PWMto- voltage output DACs with an integrated high accuracy, low drift, 10ppm/°C reference in a 12-lead MSOP package. It has rail-to-rail output buffers and is guaranteed monotonic. ...

 

Evaluating Zero-Drift Amplifier Performance

Jeremy Wong - Design Engineer Dec 30th 2013
Analog applications are demanding better precision and drift performance due to improvements in data converter resolution and the economic drive to reduce or eliminate periodic calibration. Zero-drift amplifiers, which achieve microvolt-level accuracy and excellent low frequency noise, are the ideal choice for these high-sensitivity ...

 

60V Zero-Drift Operational Amplifier with 220nVP-P Noise Achieves Widest Dynamic Range

Aug 22nd 2013
MILPITAS, CA – August 22, 2013 – Linear Technology introduces the LTC2057HV, a zero-drift amplifier featuring self-calibrating circuitry that provides high DC precision and stability over changes in temperature, time, input range and supply voltage. With 5µV input offset voltage, 0.025µV/°C offset drift and 220nVP-P low ...

 

DC417B - DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp

Feb 1st 2012
DC417B - Demo Board ...

 

DC907A-B - LTC6102, LT6100, LT1787, LTC2054, and LTC2439-1 (Requires DC590B) | Demo Board

Oct 22nd 2009
DC907A-B - Demo Board for:LTC2054 - Single Micropower Zero-Drift Operational AmplifiersLTC6102 - Precision Zero Drift Current Sense AmplifierLT1787 - Precision, High Side Current Sense AmplifiersLT6100 - Precision, Gain Selectable High Side Current Sense AmplifierLTC2439-1 - 8-/16-Channel 16-Bit No Latency Delta Sigma ADC ...

 

–48V Low Side Precision Current Sense

Jan 20th 2004
This amplifier configuration is essentially the complementary implementation to the classic high-side configuration. The op amp used must support common-mode operation at its lower rail. A “floating” shunt-regulated local supply is provided by the Zener diode, and the transistor provides metered current to an output load ...

 

LTC2054 Ultra-Precision, Wide Dynamic Range 10Hz Bandwidth Photodiode Amplifier

Jan 20th 2004
The low input bias current and input noise current, combined with low voltage offset, provide a precision signal monitor. A high degree of input sensitivity is provided to the circuit by the large dynamic range, characterized by low input offset and high DC gain of the LTC2054. ...

 

LTC2053 Precision Voltage Controlled Current Source

Jul 12th 2001
The ultra-precise LTC2053 instrumentation amplifier is configured to servo the voltage drop on sense resistor R to match the command VC. The LTC2053 output capability limits this basic configuration to low current applications. ...

 

40nVpp Noise, 0.05uV/C Drift, Chopped FET Amplifier

Jan 30th 2001
For very high precision low frequency applications, chopping the dc input signal to create an ac signal and then synchronously demodulating the signal to restore the dc value eliminates all static dc errors of the components used. This is a high gain (Av=1001) example with excellent low offset voltage and drift with temperature ...

 

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 ...

 

DC598A - LTC2051CDD | Precision Dual, Zero-Drift Op Amp in DFN Package

Feb 29th 2000
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Low Noise, Low Power Photodiode Amplifier With DC Precision

Nov 23rd 1999
Instead of simply grounding the LT6202 noninverting input, an LTC2050 drives it (and therefore the source) exactly to where it needs to be for zero JFET gate voltage. Output offset is 200mV and output noise is 2mVP-P measured in a 20MHz bandwidth. ...

 

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 ...

 

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 ...

 

“Classic” High-Precision Low Side Current Sense

Nov 23rd 1999
This configuration is basically a standard non-inverting amplifier. The op amp used must support common-mode operation at the lower rail and the use of a Zero-Drift type (as shown) provides excellent precision. The output of this circuit is referenced to the lower Kelvin contact, which could be ground in a single-supply application. ...

 

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 ...

 

Low Power, Bidirectional 60V Precision Hi Side Current Sense

Aug 26th 1999
Using a very precise zero-drift amplifier as a pre-amp allows for the use of a very small sense resistor in a high voltage supply line. A floating power supply regulates the voltage across the pre-amplifier on any voltage rail up to the 60V limit of the LT1787HV circuit. Overall gain of this circuit is 1000. A 1mA change in ...

 

Ground Referred Precision Current Sources

Jun 25th 1997
The zero drift LTC2054 instrumentation amplifier can be used in conjunction with one of Linear Technology's precision, low temperature drift shunt voltage references (in this example the LT1634) to create a precision, ground referred current source. ...

 

1Hz to 100MHz Voltage to Frequency Converter Has 160dB Dynamic Range, Runs From 5V Supply

Jan 1st 1990
This circuit achieves a wider dynamic range and higher output frequency than any commercially available voltage to frequency (V→F) converter. Its 100MHz full scale output (10% over range to 110MHz is provided) is at least ten times faster than available units. The circuit’s 160dB dynamic range (8 decades) allows continuous ...

 

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 ...

 

APD DC Coupled Current Monitor from 20V to 90V APD Bias

Jan 1st 1987
APD current monitor that operates at High Common Mode Voltage and simplifies signal conditioning using instrumentation amplifier and a Delta Sigma ADC. ...