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Numéro de référence | AD8270 | ||
Description | Precision Dual-Channel Difference Amplifier | ||
Fabricant | Analog Devices | ||
Logo | |||
1 Page
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 10kΩ
10kΩ
10kΩ
10kΩ 12 –IN1B
10kΩ
–IN2A 2
_
10kΩ
+IN2A 3
+
10kΩ
+IN1A 4
AD8270
_
10kΩ
11 –IN2B
+
10kΩ
10 +IN2B
10kΩ
9 +IN1B
20kΩ 20kΩ
20kΩ 20kΩ
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
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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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Pages | Pages 21 | ||
Télécharger | [ AD8270 ] |
No | Description détaillée | Fabricant |
AD827 | Low Power Dual Op Amp | Analog Devices |
AD8270 | Precision Dual-Channel Difference Amplifier | Analog Devices |
AD8271 | Programmable Gain Precision Difference Amplifier | Analog Devices |
AD8273 | High Precision Difference Amplifier | Analog Devices |
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