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AD5241BRU100-REEL7 Arkusz danych(PDF) 1 Page - Analog Devices |
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AD5241BRU100-REEL7 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 16 page 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. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a AD5241/AD5242 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 © Analog Devices, Inc., 2002 FUNCTIONAL BLOCK DIAGRAM RDAC REGISTER 1 ADDR DECODE 8 PWR-ON RESET SERIAL INPUT REGISTER AD5241 SHDN VDD VSS SDA SCL GND A1 W1 B1 O1 O2 REGISTER 2 AD0 AD1 RDAC REGISTER 1 ADDR DECODE 8 PWR-ON RESET SERIAL INPUT REGISTER AD5242 SHDN VDD VSS SDA SCL GND A 1 W1 B1 A2 W2 B2 RDAC REGISTER 2 O2 O1 REGISTER 1 AD0 AD1 FEATURES 256 Positions 10 k , 100 k , 1 M Low Tempco 30 ppm/ C Internal Power ON Midscale Preset Single-Supply 2.7 V to 5.5 V or Dual-Supply 2.7 V for AC or Bipolar Operation I2C Compatible Interface with Readback Capability Extra Programmable Logic Outputs Self-Contained Shutdown Feature Extended Temperature Range –40 C to +105 C APPLICATIONS Multimedia, Video, and Audio Communications Mechanical Potentiometer Replacement Instrumentation: Gain, Offset Adjustment Programmable Voltage-to-Current Conversion Line Impedance Matching GENERAL DESCRIPTION The AD5241/AD5242 provide a single-/dual-channel, 256- position, digitally controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a potentiometer, trimmer, or variable resistor. Each VR offers a completely programmable value of resistance between the A Terminal and the wiper, or the B Terminal and the wiper. For AD5242, the fixed A-to-B terminal resistance of 10 k Ω, 100 k Ω, or 1 MΩ has a 1% channel-to-channel matching tolerance. The nominal temperature coefficient of both parts is 30 ppm/ °C. Wiper position programming defaults to midscale at system power ON. Once powered, the VR wiper position is programmed by an I 2C compatible 2-wire serial data interface. Both parts have available two extra programmable logic outputs that enable users to drive digital loads, logic gates, LED drivers, and analog switches in their system. The AD5241/AD5242 are available in surface-mount (SOIC-14/- 16) packages and, for ultracompact solutions, TSSOP-14/-16 packages. All parts are guaranteed to operate over the extended temperature range of –40 °C to +105°C. For 3-wire, SPI compatible interface applications, please refer to AD5200, AD5201, AD5203, AD5204, AD5206, AD5231 *, AD5232*, AD5235 *, AD7376, AD8400, AD8402, and AD8403 products. I2C ® Compatible 256-Position Digital Potentiometers *Nonvolatile digital potentiometer I 2C is a registered trademark of Philips Corporation. |
Podobny numer części - AD5241BRU100-REEL7 |
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Podobny opis - AD5241BRU100-REEL7 |
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