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Amplifier Circuits: Instrumentation 

Instrumentation Amplifiers:   #G        HL        MZ

Amplifier -- Main Page  

Last Updated on: Thursday, November 30, 2017 07:37 AM

 
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High-CMRR Instrumentation Amp Works with Low Supply Voltages -  2-Oct-03 EDN-Design Ideas Modern battery-cell voltages of 3 to 3.6V require circuits that offer efficient low-voltage operation.  This design idea proposes an ac-coupled instrumentation-amplifier design that features high CMRR(common-mode-rejection ratio], __ Circuit Design by Dobromir Dobrev, Jet Electronics, Sofia, Bulgaria

In-Circuit Tester -  This is an in-circuit tester that to check correctly wired.  It can test a circuit board without be influenced by semiconductor parts. __ Designed by The Electronic Lives Manufacturing-presented Chan

Input filter prevents instrumentation-amp RF-rectification errors -  11/13/03  EDN-Design Ideas Instrumentation amplifiers serve in a variety of applications that need to extract a weak differential signal from large common-mode noise or interference. __ Circuit Design by Charles Kitchin, Lew Counts, and Moshe Gerstenhaber, Analog Devices, Wilmington, MA

Instrumentation Amp has differential outputs -  08/19/04  EDN-Design Ideas tate-of-the-art ADCs accept differential inputs, allowing you to differentially implement the entire signal path from sensor to converter.  This structure provIdeas significant performance advantages, because differential signals i __ Circuit Design by Moshe Gerstenhaber and Stephen Lee, Analog Devices, Wilmington, MA

Instrumentation Amp Has Low Offset, Drift & Low-Frequency Noise -  08/21/08 EDN-Design Ideas By cascading instrumentation amplifiers, you can achieve an instrumentation amplifier with decade-gain having low offset, drift and LF noise __ Circuit Design by Marián Štofka, Slovak University of Technology, Bratislava, Slovakia

Instrumentation Amp makes an accurate transimpedance Amp too -  EDN-Design Ideas 03/23/2015    The interesting topology in This Design Idea turns a monolithic in-amp into a good transimpedance amp for photodiode or similar applications __ Circuit Design by Stefano Salvatori

Instrumentation Amp makes noninverting integrator -  09/19/02 EDN-Design Ideas Figure 1a shows the classic implementation of an integrator.  The circuit has two properties that may be undesirable in same applications  It necessarily inverts, and it requires a split-supply or midsupply reference.  Figure 1b shows an implementation of an integrator that uses an LT1789 instrumentation amplifier __ Circuit Design by Glen Brisebois, Linear Technology Corp, Milpitas, CA

Instrumentation Amp provides unipolar & bipolar outputs -  03-Aug-00 EDN-Design Ideas Intelligent sensors and signal conditioners for plant-automation systems must produce outputs compatible with standard data-acquisition systems, such as PCs, programmable logic controllers, and remote terminals for supervisory and control systems.  Standard analog inputs are 0 to 1V, ±10V, 0 to 1 mA, and 4 to 20 mA.  The circuit in Figure 1 makes all these signals available, using only three packages in addition to the DAC __ Circuit Design by David Rathgeber, Alles Corp, Toronto, ON, Canada

Instrumentation Amp Swings Rail-To-Rail -  03/03/94 EDN-Design Ideas You can combine an instrumentation amplifier and an inexpensive CMOS op amp to get the better of two worlds  the precision of a bipolar instrumentation amp and the5V single-supply operation of the CMOS op amp.  The characteristics of such a circuit __ Circuit Design by R Mark Stitt, Burr-Brown,  Tucson, AZ

Instrumentation Amp works from one supply -  03/16/00 EDN-Design Ideas Many single-supply applications need precision amplifiers that can operate from 5V or lower.  Although many precision, single-supply op amps are currently available for configuring as 2- and 3-amplifier instrumentation amplifiers (IAs), these designs require great attention to detail to achieve accuracy and precision. __ Circuit Design by Adolpho Garcia

Instrumentation Amplifier Compensates System Offset from Single Supply -  19-Mar-09 EDN-Design Ideas An instrumentation amp operates from one supply and lets you reset the system offset by applying a positive correction voltage to the VREF input __ Circuit Design by Luca Bruno, ITIS Hensemberger Monza, Lissone, Italy

Instrumentation Amplifier extends DSO -  01/05/06 EDN-Design Ideas Elusive current waveforms required scope documentation.  To determine the specifications of a solar-generating plant, I needed to accurately measure the load current a product consumed.  The product switched several internal devices on and off during an interval of several seconds.  An ammeter showed that the current transitions occurred too quickly for visual logging, and my managers had requested an oscilloscope photo of the current waveform's peaks __ Circuit Design by Bob Perrin, Sacramento, CA

Instrumentation Amplifier Has 290-Mhz GB -  05/12/94 EDN-Design Ideas very high frequency instrumentation amplifier based on video-difference amplifier __ Circuit Design by Paul Hendricks, Analog Devices, Wilmington, MA

Instrumentation Amplifier Is Less Sensitive to Resistor Mismatch -  12/02/10 EDN-Design Ideas Correcting phase with a third amplifier improves the two-amp design.  [Design Ideas by Reza Moghimi, Analog Devices, San Jose, CA __ Circuit Design by Reza Moghimi, Analog Devices, San Jose, CA

Instrumentation Amplifier with ±300V Common Mode Range & CMRR > 150dB -  The differential input voltage is sampled on a flying capacitor and then its charge is transferred to a fixed capacitor with is then amplified to produce an output voltage.  The use of high voltage photo driven FET switches rejects very high input common mode voltages. __ Linear Technology/Analog Devices App Note, Jun 21, 2011

Instrumentation Amplifier with Shield Driver -  This is a variation on the standard 3-stage implementation of an Instrumentation Amplifier function.  The gain resistor structure between the input op amps provides a mid-point potential that represents the average of the incoming signals.  The average level is buffered and back-drives the shields of the signals so there are __ Linear Technology/Analog Devices App Note, Jun 21, 2011

Instrumentation Applications for a Monolithic Oscillator -  Linear Technology AN93 __ Designed by Jim WilliamsFeb 1st, 2003

Instrumentation Applications for a Monolithic Oscillator -  AN93 Instrumentation applications for a monolithic programmable oscillator are presented in this publication.  Circuits include platinum and thermistor based thermometers, an isolated thermometer and three relative humidity signal conditioners.  Bipolar and FET input c (add 1/06) __ Linear Technology/Analog Devices

Instrumentation Applications for High Accuracy Temperature Monitor Products -  Thermal management is a critical part of system design.  FPGAs and processors often require heat sinks and fans, to the extent that a failure (stopped fan or obstructed heat sink) would cause damage.  These devices often have a pin connected to an on-die diode temperature sensor.  It is also useful to know the temperature of other __ Linear Technology/Analog Devices App Note, Leo Chen Aug 24th 2011

Instrumentation-Amplifier-Based Current Shunt Exhibits 0V Drop -  27-Nov-08 EDN-Design Ideas A current-to-voltage converter has 0V drop __ Circuit Design by Marián Štofka, Slovak University of Technology, Bratislava, Slovakia

Isolation Amplifier Suits Industrial Applications -  02/03/00  EDN-Design Ideas The circuit in Figure 1a is a low-cost isolation amplifier for instrumentation applications that provIdeas as much as 500V of galvanic isolation between input and output.  The amplifier uses only one small, low-cost transformer and with little modification __ Circuit Design by Andrew Russell, Philips Semiconductors, Hazel Grove, England

LCD-Bias Generator Uses Main Microcontroller as Control IC -  11/26/09  EDN-Design Ideas Control a buck-boost switch-mode regulator with the same microcontroller that sends data to an LCD __ Circuit Design by Tom Hughes, Dannemora, Auckland, New Zealand

Logic Probe -  An useful and easy to build Logic Probe with Pulse injector.  An schematic of a "digital version" is included. __ Designed by Jose Pino

Logic probe -  This logic probe uses a single CMOS IC and shows three logic conditions, High, Low and Pulsing.  In addition if the probe input is neither hi or low (the high impedance state of tri-output logic IC's) then no LED's will light.    Power from the logic probe is taken from the logic circui __ Designed by Andy Collison

Logic Probe1 with pulse TTL/CMOS -  One of the most frustrating problems with experimenting is not be able to check the logic state of TTL or CMOS ic's without the use of a triggered oscilloscope. The schematic diagram above shows a simple and inexpensive way of building a 'Logic Probe' yourself. It will provide you with three visible indicators; "Logic 1"(+, red led), "Logic 0"(-, green led), and "Pulse"(yellow led) __ Designed by Tony van Roon  VA3AVR

Logic Probe2  with pulse TTL/CMOS -  This circuit uses the four 2 input NOR gates contained within the 4001 CMOS IC, and is primarily intended for testing CMOS circuits.  The probe derives its power from the supply of the circuit being tested.  The first gate, N1, has its inputs tied together so that it operates as an inverter, and it is biased by R1 so that roughly half the supply potential appears at its output __ Designed by Tony van Roon  VA3AVR

Logic Probe3 Audible TTL/CMOS -  A logic tester with an audible indicator can be handy when troubleshooting or testing a crowded circuit board.  It allows you to keep your eyes on the circuit, rather than on a LED on the tester.  The project described in this article is just such a tester.  It provides an audible indication of the logic level of the signal presented to its input __ Designed by Tony van Roon  VA3AVR

Logic Tester -  This is a simple logic level tester with pulse stretch capability. __ Designed by The Electronic Lives Manufacturing-presented Chan

LOPIC Logic Probe with Pulser -  This project is a combinationLogic Probe and Logic Pulser.  It is capable of testing all sorts of digital and microcomputer projects.  You will find it extremely handy when designing a project as the golden rule is totest everything in steps and stages during the design-and-construction process.  If you are not sure how a Logic Probe or Pulser works

Low Voltage Instrumentation Amplifier -  Circuit Ideas for Designers App Note __ Advanced Linear Devices, Inc

Low-Cost isolation Amplifier suits industrial applications -  02/03/00  EDN-Design Ideas The circuit in Figure 1a is a low-cost isolation amplifier for instrumentation applications that provIdeas as much as 500V of galvanic isolation between input and output.  The amplifier uses only one small, low-cost transformer and with little modification __ Circuit Design by Andrew Russell, Philips Semiconductors, Hazel Grove, England

Low-Cost LCD-Bias Generator Uses Main Microcontroller as Control IC -  26-Nov-09 EDN-Design Ideas Control a buck-boost switch-mode regulator with the same microcontroller that sends data to an LCD __ Circuit Design by Tom Hughes, Dannemora, Auckland, New Zealand

LT1167: Single Resistor Sets the Gain of the Best Instrumentation Amplifier -  DN182 Design Notes __ Linear Technology/Analog Devices

Lux Meter -  This is a simple Lux Meter that is suitable for beginners. __ Designed by The Electronic Lives Manufacturing-presented Chan


Instrumentation Amplifiers:   #G        HL        MZ


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