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AD22050

Obsolete

Single-Supply Sensor Interface Amplifier

Data Sheet (Rev. C) Product Selection Table

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Overview

Gain of ×20, Alterable from ×1 to ×160
Input CMR from Below Ground to 6× (V_S - 1 V)
Output Span 20 mV to (V_S - 0.2) V
1-, 2-, 3-Pole Low-Pass Filtering Available
Accurate Midscale Offset Capability
Differential Input Resistance 400 kO
Drives 1kO Load to +4 V Using
V_S = +5 V

Supply Voltage: +3.0 V to +36 V
Transient Spike Protection and RFI
Filters Included
Peak Input Voltage (40 ms): 60 V
Reversed Supply Protection: -34 V
Operating Temperature Range: -40°C to + 125°C

The AD22050 is a single-supply difference amplifier for amplifying and low-pass filtering small differential voltages (typically 100 mV FS at a gain of 40) from sources having a large common-mode voltage.

Supply voltages from +3.0 V to +36 V can be used. The input common-mode range extends from below ground to +24 V using a +5 V supply with excellent rejection of this common-mode voltage. This is achieved by the use of a special resistive attenuator at the input, laser trimmed to a very high differential balance.

Provisions are included for optional low-pass filtering and gain adjustment. An accurate midscale offset feature allows bipolar signals to be amplified.

Suggested Replacement Parts

High Voltage, Precision Difference Amplifier