AD8227 is a rail-to-rail output instrumentation amplifier with a wide supply range. It features adjustable gain range, input voltage below ground, inputs protected beyond supplies, and very wide power supply range.
The AD8227 instrumentation amplifier offers a very wide supply range (±1.5 V to ±18 V dual, 2.2 V to 36 V single) and can be configured for gains between 5 and 1000 with a single external resistor. Its rail‑to‑rail output and input range that extends below the negative supply make it suitable for low‑level signal acquisition without requiring dual supplies.
The device is supplied in 8‑lead MSOP and SOIC packages, operates from –40 °C to +125 °C, and includes robust input protection, low input bias current, and high CMRR (typical 100 dB at G=5). Detailed specifications, pin descriptions, typical performance curves, and application circuits such as differential drive, strain‑gage bridges, and ADC interfacing are provided.
| Gain range | 5 to 1000 |
|---|---|
| Supply voltage range (dual) | ±1.5 V to ±18 V |
| Supply voltage range (single) | 2.2 V to 36 V |
| Bandwidth (G = 5) | 250 kHz |
| Quiescent current (typical, 25 °C) | 350 µA |
| Operating temperature range | –40 °C to +125 °C |
| CMRR (typical, G = 5) | 100 dB |
The AD8227 can be set for gains from 5 up to 1000 using a single external resistor.
The device is specified for operation from –40 °C to +125 °C.