Programmable Gain

Precision Difference Amplifier

AD8271

Rev. 0

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FEATURES

With no external resistors

Difference amplifier, gains of ½, 1, or 2

Single-ended amplifier: over 40 different gains

Set reference voltage at midsupply

Excellent ac specifications

15 MHz bandwidth

30 V/μs slew rate

High accuracy dc performance

0.08% maximum gain error

10 ppm/°C maximum gain drift

80 dB minimum CMRR (gain of 2)

10-lead MSOP package

Supply current: 2.6 mA

Supply range: ±2.5 V to ±18 V

APPLICATIONS

ADC driver

Instrumentation amplifier building blocks

Level translators

Automatic test equipment

High performance audio

Sine/cosine encoders

FUNCTIONAL BLOCK DIAGRAM

1

7

6

10k

Ω

AD8271

10k

Ω

10k

Ω

10k

Ω

20k

Ω

20k

Ω

10k

Ω

P4

P3

P2

P1

OUT

N1

N2

N3

10

9

8

2

3

4

5

Figure 1.

GENERAL DESCRIPTION

The AD8271 is a low distortion, precision difference amplifier

with internal gain setting resistors. With no external components,

it can be configured as a high performance difference amplifier

with gains of ½, 1, or 2. It can also be configured in over 40 single-

ended configurations, with gains ranging from −2 to +3.

The AD8271 comes in a 10-lead MSOP package. The AD8271

operates on both single and dual supplies and requires only a

2.6 mA maximum supply current. It is specified over the industrial

temperature range of −40°C to +85°C and is fully RoHS compliant.

For a dual channel version of the AD8271, see the AD8270

data sheet.

Table 1. Difference Amplifiers by Category

High

Speed

High

Voltage

Single-Supply

Unidirectional

Single-Supply

Bidirectional

AD8270

AD628

AD8202

AD8205

AD8273

AD629

AD8203

AD8206

AD8274

AD8216

AMP03