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AD8202YR Scheda tecnica(PDF) 1 Page - Analog Devices |
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AD8202YR Scheda tecnica(HTML) 1 Page - Analog Devices |
1 / 12 page High Common-Mode Voltage, Single-Supply Difference Amplifier AD8202 Rev. A 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 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. FEATURES High common-mode voltage range −8 V to +28 V at a 5 V supply voltage Operating temperature range: −40°C to +125°C Supply voltage range: 3.5 V to 12 V Low-pass filter (1-pole or 2-pole) EXCELLENT AC AND DC PERFORMANCE ±1 mV voltage offset ±1 ppm/°C typ gain drift 80 dB CMRR min dc to 10 kHz PLATFORMS Transmission control Diesel injection control Engine management Adaptive suspension control Vehicle dynamics control FUNCTIONAL BLOCK DIAGRAM A1 +IN –IN 200k Ω 200k Ω 100k Ω A2 +IN –IN G = ×10 G = ×2 AD8202 10k Ω 10k Ω +IN –IN GND OUT NC A1 A2 +VS NC = NO CONNECT 2 5 6 4 7 8 1 3 Figure 1. SOIC (R) Package Die Form GENERAL DESCRIPTION The AD8202 is a single-supply difference amplifier for amplifying and low-pass filtering small differential voltages in the presence of a large common-mode voltage. The input CMV range extends from −8 V to +28 V at a typical supply voltage of 5 V. The AD8202 is offered in die and packaged form. Both package options are specified over a wide temperature range of −40°C to +125°C, making the AD8202 well-suited for use in many auto- motive platforms. Automotive platforms demand precision components for better system control. The AD8202 provides excellent ac and dc performance, which keeps errors to a minimum in the user’s system. Typical offset and gain drift in the SOIC package are 5 µV/°C and 1 ppm/°C, respectively. The device also delivers a minimum CMRR of 80 dB from dc to 10 kHz. The AD8202 features an externally accessible 100 kΩ resistor at the output of the preamp A1, which can be used for low-pass filter applications and for establishing gains other than 20. GND NC –IN +IN A1 +VS A2 OUT AD8202 5V OUTPUT INDUCTIVE LOAD POWER DEVICE 4-TERM SHUNT CLAMP DIODE BATTERY 14V COMMON NC = NO CONNECT Figure 2. High-Line Current Sensor GND NC –IN +IN A1 +VS A2 OUT AD8202 5V OUTPUT INDUCTIVE LOAD POWER DEVICE 4-TERM SHUNT CLAMP DIODE BATTERY 14V COMMON NC = NO CONNECT Figure 3. Low-Line Current Sensor |
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