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
10kΩ
AD8271
10kΩ
10kΩ
10kΩ
20kΩ
20kΩ
10kΩ
–V
S
P4
P3
P2
P1
+V
S
OUT
N1
N2
N3
07363-001
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
