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Analog Devices - Precision Dual-Channel Difference Amplifier

Numéro de référence AD8270
Description Precision Dual-Channel Difference Amplifier
Fabricant Analog Devices 
Logo Analog Devices 





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AD8270 fiche technique
Data Sheet
FEATURES
With no external resistors
Difference amplifier: gains of 0.5, 1, or 2
Single ended amplifiers: 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 (G = 2)
Two channels in small 4 mm × 4 mm LFCSP
Supply current: 2.5 mA per channel
Supply range: ±2.5 V to ±18 V
APPLICATIONS
Instrumentation amplifier building blocks
Level translators
Automatic test equipment
High performance audio
Sine/cosine encoders
GENERAL DESCRIPTION
The AD8270 is a low distortion, dual-channel amplifier with
internal gain setting resistors. With no external components,
it can be configured as a high performance difference amplifier
with gains of 0.5, 1, or 2. It can also be configured in over 40 single-
ended configurations, with gains ranging from −2 to +3.
The AD8270 is the first dual-difference amplifier in the small
4 mm × 4 mm LFCSP. It requires the same board area as a typical
single-difference amplifier. The smaller package allows a 2×
increase in channel density and a lower cost per channel, all
with no compromise in performance.
Precision Dual-Channel
Difference Amplifier
AD8270
FUNCTIONAL BLOCK DIAGRAM
–IN1A 1 10k
10k
10k
10k12 –IN1B
10k
–IN2A 2
_
10k
+IN2A 3
+
10k
+IN1A 4
AD8270
_
10k
11 –IN2B
+
10k
10 +IN2B
10k
9 +IN1B
20k20k
20k20k
Figure 1.
The AD8270 operates on both single and dual supplies and
requires only 2.5 mA maximum supply current for each ampli-
fier. It is specified over the industrial temperature range of
−40°C to +85°C and is fully RoHS compliant.
Table 1. Difference Amplifiers by Category
High
Single-Supply
High Speed Voltage Unidirectional
AD8270
AD8273
AMP03
AD628
AD629
AD8202
AD8203
Single-Supply
Bidirectional
AD8205
AD8206
AD8216
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2008–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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