The AD22057 is a single-supply difference amplifier for amplifying and low-pass filtering small differential voltages from sources having a large common-mode voltage. It supports supply voltages from +3.0V to +36V.
The AD22057 is a single‑supply difference amplifier designed to amplify and low‑pass filter small differential voltages from sources with large common‑mode voltages. It operates from +3.0 V to +36 V and offers a gain of 320 (adjustable 31‑3160), with input common‑mode range extending from below ground to +24 V and an output span of 20 mV to (VS‑0.2) V.
The device includes selectable 1‑, 2‑ or 3‑pole low‑pass filters, an accurate midscale offset feature, and can drive a 1 kΩ load to +4 V. It is suited for current sensing, motor control, pressure transducers, strain‑gauge interfaces and other low‑level signal sources.
| Supply Voltage Range | +3.0 V to +36 V |
|---|---|
| Typical Gain | 320 (adjustable 31‑3160) |
| Input Common‑Mode Range | Below ground to +24 V |
| Output Span | 20 mV to (VS‑0.2) V |
| Low‑Pass Filter Options | 1‑, 2‑, 3‑pole selectable |
| Differential Input Resistance | 400 kΩ |
| Peak Input Voltage (40 ms) | 60 V |
It operates from +3.0 V up to +36 V.
Gain can be raised by adding a resistor from the buffer output to its non‑inverting input, or lowered by adding a resistor to ground.
The device can handle a peak input of 60 V for 40 ms.