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AD8250-EVAL датащи(PDF) 1 Page - Analog Devices |
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AD8250-EVAL датащи(HTML) 1 Page - Analog Devices |
1 / 8 page 12MHz 20V/μs G=1,2,5,10 Programmable Gain iCMOS™ Instrumentation Amplifier Preliminary Technical Data AD8250 Rev.PrB 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 companies. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2006 Analog Devices, Inc. All rights reserved. FEATURES Easy to Use Programmable Gains: 1, 2, 5, 10 Digital or Pin Programmable Gain Setting Temp Range -40 °C to 85°C EXCELLENT DC PERFORMANCE High CMRR 100dB G=10 Low Gain Drift: 10ppm/ °C Low Offset Drift: 1uV/ °C Low Offset: 70uV G=10 EXCELLENT AC PERFORMANCE Fast Settle Time: 0.5us to 0.01% High Slew Rate: 20V/μs High CMRR over Frequency: 80dB to 50kHz Low Noise: 13nV √Hz, G=10 Low Power: 3.5 mA (typ) Supply: ±5V to ±12V Applications Data Acquisition Bio-Medical Analysis Test and Measurement High Performance System Monitoring A1 A0 DGD WR Logic AD8250 OUT +VS -VS REF +IN -IN Figure 1. Functional Block Diagram 1GHz 100MHz 10MHz 1MHz 100kHz 10kHz 1kHz 100Hz 30 20 10 0 -10 -20 -30 Frequency Figure 2. Gain vs Frequency GENERAL DESCRIPTION The AD8250 is a digitally gain programmable instrumentation amplifier that has high GΩ input impedance and low distortion making it suitable for sensor interfacing and driving high sample rate analog to digital converters. It has high bandwidth of 12MHz, low distortion and settle time of 0.5us to 0.01%. Offset drift and gain drift are limited to 1uV/°C and 10ppm/°C respectively. In addition to its wide input common-voltage range, it boasts a high common-mode rejection of 80dB at G=1 from DC to 50kHz. The combination of precision DC performance coupled with high speed capabilities make the AD8250 an excellent candidate for data acquisition and medical applications. Furthermore, this monolithic solution simplifies design, manufacturing and boosts performance of instrumentation by maintaining tight match of internal resistors and amplifiers. The AD8250’s user interface comprises of a parallel port that allows users to set the gain in one of three different ways. A two bit word sent to A1 and A2, via a bus may be latched using the WR input. An alternative is to set the gain within 1μs by using the gain port in transparent mode where the state of A0 and A1 directly set the gain. The last method is to strap A1 and A2 to a high or low voltage potential, permanently setting the gain. The AD8250 is available in a 10 pin MSOP package and specified over -40°C to 85°C, making it an excellent solution for applications where size and packing density are |
Аналогичный номер детали - AD8250-EVAL |
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Аналогичное описание - AD8250-EVAL |
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