AMP, PRECISION INST; Amplifiers, No. of:1; Gain, Bandwidth -3dB:825kHz; Voltage, Supply Min:2.3V; Voltage, Supply Max:18V; Case Style:MSOP; Pins, No. of:8; Temperature, Operating Range:-40°C to +125°C; Slew Rate:2V/чs; Termination Type:SMD; Op Amp Type:Precision
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Технические характеристики

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Корпус uSOP-8 MSOP8
Тип ОУ
Кол-во каналов ОУ
Напряжение питания
Ток собственного потребления
Программируемый коэффициент усиления
Максимальная скорость нарастания выходного сигнала
Диапазон рабочих температур
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Precision Instrumentation Amplifier AD8221 CONNECTION DIAGRAM Easy to use Available in space-saving MSOP Gain set with 1 external resistor (gain range 1 to 1000) Wide power supply range: ±2.3 V to ±18 V Temperature range for specified performance: −40°C to +85°C Operational up to 125°C 1 Excellent AC specifications 80 dB minimum CMRR to 10 kHz ( G = 1) 825 kHz, –3 dB bandwidth (G = 1) 2 V/μs slew rate Low noise 8 nV/√Hz, @ 1 kHz, maximum input voltage noise 0.25 μV p-p input noise (0.1 Hz to 10 Hz) High accuracy dc performance (AD8221BR) 90 dB minimum CMRR (G = 1) 25 μV maximum input offset voltage 0.3 μV/°C maximum input offset drift 0.4 nA maximum input bias current –IN 1 8 +VS RG 2 7 VOUT RG 3 6 REF +IN 4 AD8221 5 –VS TOP VIEW 03149-001 FEATURES Figure 1. 120 110 AD8221 CMRR (dB) 100 90 COMPETITOR 1 80 70 60 COMPETITOR 2 APPLICATIONS Weigh scales Industrial process controls Bridge amplifiers Precision data acquisition systems Medical instrumentation Strain gages Transducer interfaces GENERAL DESCRIPTION The AD8221 is a gain programmable, high performance instrumentation amplifier that delivers the industry’s highest CMRR over frequency in its class. The CMRR of instrumentation amplifiers on the market today falls off at 200 Hz. In contrast, the AD8221 maintains a minimum CMRR of 80 dB to 10 kHz for all grades at G = 1. High CMRR over frequency allows the AD8221 to reject wideband interference and line harmonics, greatly simplifying filter requirements. Possible applications include precision data acquisition, biomedical analysis, and aerospace instrumentation. 40 10 100 1k 10k 100k FREQUENCY (Hz) 03149-002 50 Figure 2. Typical CMRR vs. Frequency for G = 1 Low voltage offset, low offset drift, low gain drift, high gain accuracy, and high CMRR make this part an excellent choice in applications that demand the best dc performance possible, such as bridge signal conditioning. Programmable gain affords the user design flexibility. A single resistor sets the gain from 1 to 1000. The AD8221 operates on both single and dual supplies and is well suited for applications where ±10 V input voltages are encountered. The AD8221 is available in a low cost 8-lead SOIC and 8-lead MSOP, both of which offer the industry’s best performance. The MSOP requires half the board space of the SOIC, making it ideal for multichannel or space-constrained applications. Performance is specified over the entire industrial temperature range of −40°C to +85°C for all grades. Furthermore, the AD8221 is operational from −40°C to +125°C1. 1 See Typical Performance Characteristics for expected operation from 85°C to 125°C. Rev. B 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: 781.329.4700 Fax: 781.461.3113 ©2003–2007 Analog Devices, Inc. All rights reserved. PDF
Документация на серию AD8221 

AD8221 Precision Instrumentation Amplifier Data Sheet (Rev. B)

Дата модификации: 27.09.2007

Размер: 701.9 Кб

24 стр.

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