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Moshe Gerstenhaber

Analog Devices Inc., Norwood, MA


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Author Articles

  • High-Voltage Monitor Features High Accuracy

    By Chau Tran, August 19, 2002

    Many applications call for measuring ac lines or high dc voltages. One common technique uses a large voltage divider followed by a buffer. Another employs an inverting attenuator. The problems associated with both methods stem from uneven power...

  • Measurement Circuit Features High Common-Mode Rejection

    By Chau Tran, July 22, 2002

    Modern measurement systems often operate with single 5-V power supplies, yet their input signals may have large common-mode voltages that exceed the supply by tens or hundreds of volts. Also, unless the converter is driven differentially, the noise on...

  • Composite Instrumentation Amp Extends CMRR Frequency Range 10 Times

    By Chau Tran, February 04, 2002

    Instrumentation amplifiers are the building blocks commonly used in industrial, medical, and military systems. The primary benefit of such a component is its ability to reject common-mode signals while amplifying a differential-input...

  • Active Feedback Amplifier Enables High-Performance A-To-D Conversion

    By Chau Tran, April 02, 2001

    Designers employing high-performance analog-to-digital converters (ADCs) have a common problem: there are few, if any, amplifiers on the market that can provide the accuracy needed to buffer an input signal and drive a 16-bit ADC without a loss of...

  • Current Transmitter With Linear Voltage Transfer Rejects Ground Noise

    By Chau Tran, August 07, 2000

    Many systems use current signals to control remote instruments. The advantage of this method is the ability to operate with two remotely connected power supplies even if their grounds are not the same. In these cases, it's necessary for the output...

  • Eliminate RTD Self-Heating Errors

    By Mark Murphy, March 06, 2000

    Synchronous detection, long used in telecommunications because of performance potential, can now be effectively applied to sensor interface circuitry due to advances in low-cost ICs. This circuit (see...