Datasheet AD8274 (Analog Devices)

Very Low Distortion, Precision Difference Amplifier AD8274 FEATURES FUNCTIONAL BLOCK DIAGRAM Very low distortion +VS 0.00025% THD + N (20 kHz) 7 0.0015% THD + N (100 kHz) 12kΩ 6kΩ Drives 600 Ω loads 2 5 Excellent gain accuracy 0.03% maximum gain error 6 2 ppm/°C maximum gain drift Gain of ½ or 2 12kΩ 6kΩ 3 1 AC specifications 20 V/μs minimum slew rate 4
1 00
800 ns to 0.01% settling time
2-
–VS
36 07
High accuracy dc performance
Figure 1.
83 dB minimum CMRR 700 μV maximum offset voltage 8-lead SOIC and MSOP packages Supply current: 2.6 mA maximum Supply range: ±2.5 V to ±18 V Table 1. Difference Amplifiers by Category APPLICATIONS Low High Single-Supply Single-Supply Distortion Voltage Unidirectional Bidirectional ADC driver
AD8270 AD628 AD8202 AD8205
High performance audio
AD8273 AD629 AD8203 AD8206
Instrumentation amplifier building blocks
AD8274 AD8216
Level translators
AMP03
Automatic test equipment Sine/cosine encoders GENERAL DESCRIPTION
The AD8274 is a difference amplifier that delivers excellent ac With no external components, the AD8274 can be configured and dc performance. Built on Analog Devices, Inc., proprietary as a G = ½ or G = 2 difference amplifier. For single-ended iPolar® process and laser-trimmed resistors, AD8274 achieves a applications that need high gain stability or low distortion breakthrough in distortion vs. current consumption and has performance, the AD8274 can also be configured for several excellent gain drift, gain accuracy, and CMRR. gains ranging from −2 to +3. Distortion in the audio band is an extremely low 0.00025% The excellent distortion and dc performance of the AD8274, (112 dB) at a gain of ½ and 0.00035% (109 dB) at a gain of 2 along with its high slew rate and bandwidth, make it an excellent while driving a 600 Ω load ADC driver. Because of the part’s high output drive, it also With supply voltages up to ±18 V (+36 V single supply), the makes a very good cable driver. AD8274 is well suited for measuring large industrial signals. The AD8274 only requires 2.6 mA maximum supply current. It Additionally, the part’s resistor divider architecture allows it to is specified over the industrial temperature range of −40°C to measure voltages beyond the supplies. +85°C and is fully RoHS compliant. For the dual version, see the AD8273 data sheet.
Rev. C 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. 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. Tel: 781.329.4700 www.analog.com Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 ©2008–2011 Analog Devices, Inc. All rights reserved.
Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE MAXIMUM POWER DISSIPATION SHORT-CIRCUIT CURRENT ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTION TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CIRCUIT INFORMATION DC Performance AC Performance Production Costs Size DRIVING THE AD8274 POWER SUPPLIES INPUT VOLTAGE RANGE CONFIGURATIONS DRIVING CABLING OUTLINE DIMENSIONS ORDERING GUIDE