AD8273 Datasheet, PDF (1/4 Pages) Analog Devices – Dual-Channel Audio Difference Amplifier

Preliminary Technical Data
FEATURES
Two gain settings:
Gain of 1/2 (–6 dB)
Gain of 2 (6 dB)
0.03% max gain accuracy
10 ppm max gain drift
Excellent AC Specifications
25V/μs slew rate
0.9 μs to 0.01% settling time
Low Distortion
0.003% at 1 kHz
High Accuracy DC Performance
90 dB typ CMRR
250 uV max offset voltage
14 lead SOIC Package
Supply current: 2.5 mA per channel
Supply range: ±2.5 V to ±18 V
APPLICATIONS
High Performance Audio
Instrumentation Amplifier Building Block
Level Translator
Automatic Test Equipment
Sin/Cos Encoders
GENERAL DESCRIPTION
The AD8273 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
(G=0.5 or 2), inverting amplifier (G=0.5 or 2) or non-inverting
amplifier (G=1.5 or 3).
The AD8273 operates on both single and dual supplies and only
requires 2.5 mA maximum supply current for both amplifiers. It
is specified over the industrial temperature range of −40°C to
+85°C and is fully RoHS compliant.
Dual-Channel
Audio Difference Amplifier
AD8273
FUNCTIONAL BLOCK DIAGRAM
+V_S
–IN1
11
2
12kΩ
6kΩ
–
+
12 _SENSE1
13 _OUT1
+IN1 ^{3 12kΩ}
6kΩ
14 _REF1
–IN2
+IN2
6
12kΩ
6kΩ
–
+
10 _SENSE2
9 _OUT2
5 ^12kΩ
6kΩ
8 _REF2
4
–V_S
Figure 1. AD8273 Dual Difference Amplifier
Table 1. Difference Amplifiers by Category
Low
High
Distortion Voltage
Single Supply
Uni-directional
Single Supply
Bi-directional
AD8270
AD8273
AMP03
AD628
AD629
AD8212
AD8202
AD8203
AD8205
AD8206
AD8210
Rev. PrA
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.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
Fax: [phone]
©2007 Analog Devices, Inc. All rights reserved.