GENERAL DESCRIPTION

The AD8227 is a low cost, wide supply range instrumentation amplifier that requires only one external resistor to set any gain between 5 and 1000.

The AD8227 is designed to work with a variety of signal voltages. A wide input range and rail-to-rail output allow the signal to make full use of the supply rails. Because the input range can also go below the negative supply, small signals near ground can be amplified without requiring dual supplies. The AD8227 operates on supplies ranging from ±1.5 V to ±18 V (2.2 V to 36 V single supply).

FEATURES

Gain set with 1 external resistor

Gain range: 5 to 1000

Input voltage goes below ground

Inputs protected beyond supplies

Very wide power supply range

Single supply: 2.2 V to 36 V

Dual supply: ±1.5 V to ±18 V

Bandwidth (G = 5): 250 kHz

CMRR (G = 5): 100 dB minimum (B Grade)

Input noise: 24 nV/√Hz

Typical supply current: 350 μA

Specified temperature: −40°C to +125°C

8-lead SOIC and MSOP packages

APPLICATIONS

Industrial process controls

Bridge amplifiers

Medical instrumentation

Portable data acquisition

Multichannel systems