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Amplifier Circuits: Instrumentation 
Instrumentation Amplifiers:   #-A        B-H        I-L       M-R       S-Z
Amplifier -- Main Page  

Last Updated on: Thursday, April 07, 2016 01:00 PM

 
Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

±5V Precision Instrumentation Amplifier -  A flying capacitor is ideal for virtually eliminating dc and low frequency common mode errors. This is desired for a low voltage differential to single ended instrumentation Amplifier stage.… [Linear Technology App Note - , Jun 21, 2011]

 

∑-∆ Isolation Amplifier transfers Low frequencies across barrier -  08/02/13 EDN Design Idea   Running a ∑-∆ stream over the barrier makes for an inexpensive analog isolator… [by Francesc Casanellas]

 

10°C to 40°C Thermistor Thermometer -  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… [Linear Technology App Note - , Mar 30th 2010]

2 Instrumentation Amps Make Accurate Voltage-To-Current Source -  05/14/09  EDN Design Idea   Many designs require precise voltage-controlled current sources, especially in the presence of variable loads. Common approaches, which use a few op Amps and a handful of passive components, have inherent errors due to nonideal com… [by Frank Ciarlone, Analog Devices, Wilmington, MA]

 

2.7V to 5.5V Precision High Side Current Sense -  This high side current sense Amplifier works down to 2.7V. Even with such a low supply voltage, accuracy of the voltage sensed across resistor Rs is preserved due to the very low voltage offset error of the LTC6078 amplifier (7uV typical).… [Linear Technology App Note - , Mar 16th 2010]

 

2.7V to 5.5V Ultra High Precision Current Sense -  This is a low-voltage, ultra-high-precision monitor featuring a Zero-Drift Instrumentation Amplifier (IA) that provides Rail-to-Rail inputs and outputs. Voltage gain is set by the feedback resistors. Accuracy of this circuit is set by the quality of resistors selected by the user, small-signal range is limited by VOL in single-supply… [Linear Technology App Note - , Mar 30th 2010]

 

85V, –100V Common Mode Range Instrumentation Amplifier (AV = 10) -  The input section is a classic difference Amplifier set to A=0.1 so that the Vcm is attenuated by 10x along with the signal of interest. The second section has A=100 so that the overall circuit has A=10 but yet supports a large Vcm working range.… [Linear Technology App Note - , Jun 21, 2011]

 

A Digitally Programmable Gain & Attenuation Amplifier Design -  AN-137 Analog Devices App Notes  …

 

A Single Amplifier Precision High Voltage Instrument Amp -  DN25  Design Notes (Linear Technology)…

 

A User's Guide to I.C. Instrumentation Amplifiers -  AN-244 Analog Devices App Note -   …

 

AC Couple Analog Signals without a DC Bias Source -  02/03/00 EDN Design Idea   A conventional ac-coupling circuit in a single-supply system comprises a series capacitor and a shunt resistor to ground. Unfortunately,negative peaks ofinput signal can exceed 0.3V input operating-range limits of an ADC, suc… [by Joseph Luis Sousa, Linear Technology Corp, North Chelmsford, MA]

 

AC line powers microcontroller-based fan-speed regulator -  09/30/04  EDN Design Idea   The need for conditioning low-level ac signals in the presence of both common-mode noise and differential dc voltage prevails in many applications. In such situations, ac-coupling to instrumentation and difference Amplifiers is mandatory to extract the ac signal and reject common-mode noise and differential dc voltage… [by Francis Rodes, Olivier Chevalieras, and Eliane Garnier, ENSEIRB, Talence, France]

 

AC-couple analog signals without a DC bias source -  02/03/00  EDN Design Idea   A conventional ac-coupling circuit in a single-supply system comprises a series capacitor and a shunt resistor to ground. Unfortunately, the negative peaks of the input signal can exceed the-0.3V input operating-range limits of an ADC, such as the LTC1402… [by Joseph Luis Sousa, Linear Technology Corp, North Chelmsford, MA]

 

Active-feedback IC serves as current-sensing instrumentation Amplifier -  07/24/03  EDN Design Idea   High-speed current sensing presents a designer with some significant challenges. Most techniques for sensing current involve measuring the differential voltage the current produces as it flows through a sense element, such as a res… [by Jonathan Pearson, Analog Devices, Wilmington, MA]

 

Amplifier and Current Source Emulate Instrumentation Amplifier -  11/13/03  EDN Design Idea   The classic three- or two-op-amp instrumentation-amplifier circuits are standard ways to Amplify a small-amplitude differential signal contaminated with high common-mode noise. In some applications, the signal source is floating wi… [by Dobromir Dobrev, Jet Electronics, Sofia, Bulgaria]

 

Amplifier cancels common-mode voltage -  10-May-07 EDN Design Idea   You can eliminate common-mode-voltage errors with this Amplifier circuit that subtracts out the error… [by W Stephen Woodward, Chapel HIll, NC]

 

AN-244: A User's Guide to I.C. Instrumentation Amplifiers -  AN-244 Analog Devices App Note -   …

 

AN-245: Instrumentation Amplifiers Solve Unusual Design Problems -  AN-245 Analog Devices App Note Traditionally Considered Only for Transducer-Conditioning Applications, Instrumentation Amplifiers Bring Unique Performance Benefits to a Range of Or Applications as Well.…

 

AN-275: Versatile Transmitter Chip Links Strain Gauges & RTDs to Current Loop -  AN-275 Analog Devices App Note -   …

 

AN-306: Synchronous System Measures µΩs -  AN-306 Analog Devices App Note -  Synchronous Detection Scheme Measures Low Resistances…

 

AN-307: Modem-Circuit Techniques Simplify Instrumentation Designs -  AN-307) Analog Devices App Note A commutating modem circuit, wher an IC or pc-board, can serve as a building block for many measurement-system functions, reducing noise and ensuring  integrity of transmitted data.…

 

AN-320B: CMOS Multiplying DACs & Op Amps Combine to Build Programmable Gain Amplifiers, Part 2 -  AN-320B Analog Devices App Note -   …

 

AN-539: Errors & Error Budget Analysis in Instrumentation Amplifier Applications -  AN-539 Analog Devices App Note -  Describes a systematic approach to calculating  overall error in an instrumentation amplifier application.…

 

AN-581: Biasing & Decoupling Op Amps in Single Supply Applications -  AN-581 Analog Devices App Note  …

 

AN-589: Ways to Optimize the Performance of a Difference Amplifier -  AN-589 Analog Devices App Note -   This Application Note presents several ways to build and optimize  performance of a discrete difference amplifier. It also recommends Amplifiers that will make  overall solution cost/performance competitive with monolithic instrument Amplifiers.…

 

AN-60-034  Transient Protection of Darlington gain block Amplifiers -  Application Note MiniCircuits.com…

 

AN-669: Effectively Applying the AD628 Precision Gain Block -  AN-669 Analog Devices App Note -   …

 

AN-671: Reducing RFI Rectification Errors in In-Amp Circuits -  AN-671 Analog Devices App Note -   …

 

AN-683: Strain Gage Measurement using an AC Excitation -  AN-683 Analog Devices App Note -   …

 

AN-730: Theory of Operation for AD8555 Evaluation Hardware & Software -  AN-730 Analog Devices App Note -   …

 

AN-772: A Design & Manufacturing Guide for the Lead Frame Chip Scale Package -  AN-772 Analog Devices App Note -   …

 

Applications for a Switched-Capacitor Instrumentation Building Block -  AN3 Linear TechnologyThis application note describes a wide range of useful applications for  LTC1043 dual precision instrumentation switched capacitor building block. Some of  applications described are ultra high performance instrumentation Amplifier, lock-in Amplifier, wide range digitally controlled variable gain Amplifier, relative humidity sensor…

 

Autozeroed Amplifier with halved noise needs feW components -  10/25/07  EDN Design Idea   The unique architecture of the Analog Devices AD8553 instrumentation Amplifier permits paralleling devices to lower noise… [by Marián Štofka, Slovak University of Technology, Bratislava, Slovakia]


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Instrumentation Amplifiers:   #-A        B-H        I-L       M-R       S-Z


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