The AD8200 is a single-supply difference amplifier from Analog Devices that amplifies and low-pass filters small differential voltages in the presence of a large common-mode voltage. The input CMV range extends from –2 V to +24 V at a 5 V supply voltage.
The AD8200 is a high‑common‑mode‑voltage, single‑supply difference amplifier offered in both SOIC and die packages. It operates from a 4.7 V to 12 V supply and can handle common‑mode voltages from –2 V to +24 V, making it suitable for many automotive platforms such as transmission control, diesel injection control, and engine management.
The device features an internally accessible 100 kΩ resistor for low‑pass filtering and gain adjustment, a typical gain of 20, +1 mV input offset, and a minimum 80 dB CMRR to 10 kHz. Detailed specifications, absolute‑maximum ratings, and application circuits are provided, including options for gain trimming, single‑pole and two‑pole low‑pass filters, and driving CMOS ADCs.
| Supply Voltage Range | 4.7 V to 12 V |
|---|---|
| Common‑Mode Voltage Range | -2 V to +24 V (at 5 V supply) |
| Initial Gain | 20 (VN) |
| Input Offset Voltage | +1 mV |
| CMRR (10 kHz) | ≥80 dB |
| Power Supply Rejection Ratio | ≥80 dB |
| Operating Temperature (SOIC) | -40 °C to +125 °C |
| Operating Temperature (Die) | -40 °C to +150 °C |
The AD8200 has an initial gain of 20, with a pre‑amplifier gain of 10 that can be adjusted using external resistors.
It can tolerate common‑mode voltages from –2 V to +24 V when powered from a 5 V supply.
The typical input offset voltage is +1 mV.