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AD630 - Balanced Modulator/Demodulator

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General Description

16 The AD630 is a high precision balanced modulator which combines a flexible commutating architecture with the accuracy and temperature stability afforded by laser wafer trimmed thin-film resistors.

Its signal processing applications include balanced modulation and demodulation, synchronous detection, phase detection, quadrature detection, phase sensitive detection, lock-in amplification and square wave multiplication.

A network of on-board applications resistors provides precision closed loop gains of ± 1 and ± 2 with 0.05% accuracy (AD630B).

Overview

a.

Key Features

  • Recovers Signal from +100 dB Noise 2 MHz Channel Bandwidth 45 V/ ␮s Slew Rate.
  • 120 dB Crosstalk @ 1 kHz Pin Programmable Closed Loop Gains of ؎1 and ؎2 0.05% Closed Loop Gain Accuracy and Match 100 ␮V Channel Offset Voltage (AD630BD) 350 kHz Full Power Bandwidth Chips Available Balanced Modulator/Demodulator AD630.

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