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AD5160BRJZ100-R22 Folha de dados(PDF) 1 Page - Analog Devices |
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AD5160BRJZ100-R22 Folha de dados(HTML) 1 Page - Analog Devices |
1 / 16 page 256-Position SPI-Compatible Digital Potentiometer AD5160 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 ©2003–2009 Analog Devices, Inc. All rights reserved. FEATURES 256-position End-to-end resistance: 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ Compact SOT-23-8 (2.9 mm × 3 mm) package SPI-compatible interface Power-on preset to midscale Single supply: 2.7 V to 5.5 V Low temperature coefficient: 45 ppm/°C Low power, IDD = 8 μA Wide operating temperature: –40°C to +125°C Evaluation board available APPLICATIONS Mechanical potentiometer replacement in new designs Transducer adjustment of pressure, temperature, position, chemical, and optical sensors RF amplifier biasing Automotive electronics adjustment Gain control and offset adjustment FUNCTIONAL BLOCK DIAGRAM SPI INTERFACE WIPER REGISTER CS SDI CLK GND VDD A W B Figure 1. PIN CONFIGURATION A B CS SDI 1 2 3 4 5 8 7 6 W VDD GND CLK TOP VIEW (Not to Scale) AD5160 Figure 2. GENERAL DESCRIPTION The AD5160 provides a compact 2.9 mm × 3 mm packaged solution for 256-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers1 or variable resistors but with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance. The wiper settings are controllable through an SPI-compatible digital interface. The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the RDAC latch. Operating from a 2.7 V to 5.5 V power supply and consuming less than 5 μA allows for usage in portable battery-operated applications. 1 The terms digital potentiometer, VR, and RDAC are used interchangeably. |
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