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AD8274 Fiches technique(PDF) 1 Page - Aavid, Thermal Division of Boyd Corporation |
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AD8274 Fiches technique(HTML) 1 Page - Aavid, Thermal Division of Boyd Corporation |
1 / 16 page Very Low Distortion, Precision Difference Amplifier AD8274 Rev. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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 www.analog.com Fax: 781.461.3113 ©2008–2011 Analog Devices, Inc. All rights reserved. FEATURES Very low distortion 0.00025% THD + N (20 kHz) 0.0015% THD + N (100 kHz) Drives 600 Ω loads Excellent gain accuracy 0.03% maximum gain error 2 ppm/°C maximum gain drift Gain of ½ or 2 AC specifications 20 V/μs minimum slew rate 800 ns to 0.01% settling time High accuracy dc performance 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 APPLICATIONS ADC driver High performance audio Instrumentation amplifier building blocks Level translators Automatic test equipment Sine/cosine encoders FUNCTIONAL BLOCK DIAGRAM 2 5 3 1 6 7 4 12kΩ 6kΩ 12kΩ –VS +VS 6kΩ Figure 1. Table 1. Difference Amplifiers by Category GENERAL DESCRIPTION The AD8274 is a difference amplifier that delivers excellent ac and dc performance. Built on Analog Devices, Inc., proprietary iPolar® process and laser-trimmed resistors, AD8274 achieves a breakthrough in distortion vs. current consumption and has excellent gain drift, gain accuracy, and CMRR. Distortion in the audio band is an extremely low 0.00025% (112 dB) at a gain of ½ and 0.00035% (109 dB) at a gain of 2 while driving a 600 Ω load With supply voltages up to ±18 V (+36 V single supply), the AD8274 is well suited for measuring large industrial signals. Additionally, the part’s resistor divider architecture allows it to measure voltages beyond the supplies. With no external components, the AD8274 can be configured as a G = ½ or G = 2 difference amplifier. For single-ended applications that need high gain stability or low distortion performance, the AD8274 can also be configured for several gains ranging from −2 to +3. The excellent distortion and dc performance of the AD8274, along with its high slew rate and bandwidth, make it an excellent ADC driver. Because of the part’s high output drive, it also makes a very good cable driver. The AD8274 only requires 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 the dual version, see the AD8273 data sheet. Low Distortion High Voltage Single-Supply Unidirectional Single-Supply Bidirectional AD8270 AD628 AD8202 AD8205 AD8273 AD629 AD8203 AD8206 AD8274 AD8216 AMP03 |
Numéro de pièce similaire - AD8274_11 |
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Description similaire - AD8274_11 |
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