ZJA3669

  ZJA3669 High Common-Mode Voltage Difference Amplifier.pdf

| Features

| Applications

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Sensor signal conditioning	Communication systems	Industrial control
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Precision data acquisition	Li-Ion battery formation& grading

| General Description

The ZJA3669 is a precision unity-gain difference amplifier with a very high input common-mode voltage range. It is a single, monolithic device that consists of a precision op amp and an integrated thin film resistor network. The ZJA3669 can accurately measure small differential voltages in the presence of common-mode signals up to ±270 V. The ZJA3669 inputs are protected from momentary common-mode or differential overloads of up to 500 V.

In many applications, where galvanic isolation in not required, the ZJA3669 can replace isolation amplifiers. This ability can eliminate costly isolated input side power supplies and the associated ripple, noise, and quiescent current. The excellent 0.0005% nonlinearity and 450 kHz bandwidth of the ZJA3669 are superior to those of conventional isolation amplifiers.

The ZJA3669 performance is specified over a wide temperature range of -40 °C to +125 °C. Its supply voltage is from ±2.25 V to ±18 V. The ZJA3669 is available in 8-lead SOIC package.

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