器件名称:
AD5161
功能描述:
256-Position SPI/I2C Selectable Digital Potentiometer
文件大小:
361.5KB 共7页
简 介:
256-Position SPI/I2C Selectable Digital Potentiometer AD5161 FEATURES 256-position End-to-end resistance 5 k, 10 k, 50 k, 100 k Compact MSOP-10 (3 mm × 4.9 mm) package Pin selectable SPI/I2C compatible interface Extra package address decode pin AD0 Full read/write of wiper register Power-on preset to midscale Single supply 2.7 V to 5.5 V Low temperature coefficient 45 ppm/°C Low power, IDD = 8 A Wide operating temperature –40°C to +125°C SDO output allows multiple device daisy-chaining Evaluation board available FUNCTIONAL BLOCK DIAGRAM VDD SDI/SDA CLK/SCL DIS CS/AD0 SPI OR I2C INTERFACE W SDO/NC A WIPER REGISTER B GND Figure 1. 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 PIN CONFIGURATION A 1 B 2 CS/ADO 3 SDI/SDA 5 10 W AD5161 TOP VIEW SDO/NC 4 (Not to Scale) 7 GND 6 CLK/SCL 9 VDD 8 DIS GENERAL OVERVIEW The AD5161 provides a compact 3 mm × 4.9 mm packaged solution for 256-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers or variable resistors, with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance. The wiper settings are controllable through a pin selectable SPI or I2C compatible digital interface, which can also be used to read back the wiper reg……