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AD5162BRM50 Arkusz danych(PDF) 1 Page - Analog Devices |
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AD5162BRM50 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 20 page Dual 256-Position SPI Digital Potentiometer AD5162 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 © 2003 Analog Devices, Inc. All rights reserved. FEATURES 2-channel, 256-position End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ Compact MSOP-10 (3 mm × 4.9 mm) package Fast settling time: tS = 5 µs typical on power-up Full read/write of wiper register Power-on preset to midscale Extra package address decode pin AD0 Computer software replaces µC in factory programming applications Single supply: 2.7 V to 5.5 V Low temperature coefficient: 35 ppm/°C Low power: IDD = 6 µA max Wide operating temperature: −40°C to +125°C Evaluation board available APPLICATIONS Systems calibrations Electronics level settings Mechanical Trimmers® replacement in new designs Permanent factory PCB setting Transducer adjustment of pressure, temperature, position, chemical, and optical sensors RF amplifier biasing Automotive electronics adjustment Gain control and offset adjustment FUNCTIONAL BLOCK DIAGRAM A1 A = 0 A = 1 VDD GND SDI CLK CS W1 WIPER REGISTER 1 SPI INTERFACE AD5162 B1 W2 WIPER REGISTER 2 B2 Figure 1. GENERAL DESCRIPTION The AD5162 provides a compact 3 mm × 4.9 mm packaged solution for dual 256-position adjustment applications. This device performs the same electronic adjustment function as a 3-terminal mechanical potentiometer. Available in four different end-to-end resistance values (2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ), this low temperature coefficient device is ideal for high accu- racy and stability variable resistance adjustments. The wiper settings are controllable through an SPI digital interface. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the RDAC1 latch. 1 The terms digital potentiometer, VR, and RDAC are used interchangeably. Operating from a 2.7 V to 5.5 V power supply and consuming less than 6 µA allows the AD5162 to be used in portable battery-operated applications. For applications that program the AD5162 at the factory, Analog Devices offers device programming software running on Windows® NT/2000/XP operating systems. This software effectively replaces any external SPI controllers, which in turn enhances users’ systems time-to-market. An AD5162 evaluation kit and software are available. The kit includes a cable and instruction manual. |
Podobny numer części - AD5162BRM50 |
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Podobny opis - AD5162BRM50 |
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