Wide Supply Range, Rail-to-Rail

Output Instrumentation Amplifier

Preliminary Technical Data

AD8226

Rev. PrA

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FEATURES

Gain set with 1 external resistor

Gain range: 1 to 1000

Input voltage goes to ground

Input overdrive protection

Very wide power supply range

Dual supply: ±1.3 V to ±18 V

Single supply: 2.6 V to 36 V

Bandwidth (G = 1): 800 kHz

CMRR (G = 1): 78 dB minimum

Input noise: 22 nV/rt(Hz)

Typical supply current: 350 µA

SOIC-8 and MSOP-8 packages

APPLICATIONS

Industrial process controls

Bridge amplifiers

Medical instrumentation

Portable data acquisition

Multichannel systems

PIN CONFIGURATION

TOP VIEW

(Not to Scale)

–IN

1

2

3

+IN

4

8

7

REF

6

5

AD8226

Figure 1.

GENERAL DESCRIPTION

The AD8226 is a low cost instrumentation amplifier that requires

only one external resistor to set any gain between 1 and 1000.

The AD8226 is designed to work with a very wide range of

voltages. It can operate on supplies ranging from ±1.2 V to

±18 V (2.4 V to 36 V single supply). The AD8226 comes with

rail-to-rail output and a wide input range that includes the

ability to go slightly below the negative supply. In addition, the

AD8226 inputs can withstand voltages beyond the rail.

The AD8226 is perfect for multichannel, space-constrained

applications. Being a low power and low cost amplifier allows

multiple channels to be used.

The AD8226 has three grades. The A grade is the lower cost

version and is specified for temperatures from −40°C to +85°C.

The B grade is the higher performance version and is specified

from −40°C to +85°C. The C grade version is the higher

temperature version and is specified from −40°C to +105°C. All

models are operational from −40°C to +125°C; behavior at

these temperatures is shown in the typical performance curves.

The AD8226 is available in MSOP and SOIC packages.

Table 1. Instrumentation Amplifiers by Category

General

Purpose

Zero

Drift

Military

Grade

Low

Power

High Speed

PGA

AD82201

AD82311

AD620

AD6271

AD8250

AD8221

AD8290

AD621

AD6231

AD8251

AD8222

AD82931

AD524

AD8253

AD82241

AD85531

AD526

AD8228

AD85561

AD624

AD85571