The AD8295 is a precision instrumentation amplifier from Analog Devices. It contains a precision instrumentation amplifier, 2 operational amplifiers, and 2 matched resistors. The chip is packaged in a 4 mm × 4 mm LFCSP, has a power supply range of ±2.3 V to ±18 V, and has a 1 ppm/°C, 0.03% resistor matching.
The AD8295 combines a high‑performance instrumentation amplifier, two general‑purpose operational amplifiers, and two precisely matched 10 kΩ resistors in a compact 4 mm × 4 mm LFCSP package. It is designed for easy PCB routing, with no exposed metal pad on the back, freeing routing space.
Key features include a gain set by a single external resistor (range 1‑1000), low input voltage noise (8 nV/√Hz at 1 kHz), high CMRR (90 dB minimum at G=1), and a wide supply range of +2.3 V to +18 V. The device operates from –40 °C to +125 °C and offers both single‑ended and differential output configurations.
| Gain range | 1 to 1000 |
|---|---|
| Input voltage noise | 8 nV/√Hz @ 1 kHz |
| CMRR (G=1) | ≥ 90 dB |
| Supply voltage range | +2.3 V to +18 V |
| Slew rate | 2 V/µs |
| Input bias current | 0.8 nA max |
| –3 dB bandwidth (G=1) | 1.2 MHz |
Gain is set with a single external resistor, providing a range from 1 to 1000.
The device operates from +2.3 V up to +18 V.
It achieves 8 nV/√Hz at 1 kHz.
The minimum common‑mode rejection ratio is 90 dB.