EVAL-AD5252EBZ:  I²C, Nonvolatile Memory, Dual 256-Position Digital Potentiometer

The AD5252 is a dual channel, digitally controlled variable resistor (VR) with resolutions of 256 positions. This device performs the same electronic adjustment function as a potentiometer or variable resistor. The AD5252’s versatile programming via a Micro Controller allows multiple modes of operation and adjustment.

In the direct program mode a predetermined setting of the RDAC register can be loaded directly from the micro controller. Another key mode of operation allows the RDAC register to be refreshed with the setting previously stored in the EEMEM register. When changes are made to the RDAC register to establish a new wiper position, the value of the setting can be saved into the EEMEM by executing an EEMEM save operation. Once the settings are saved in the EEMEM register, these values will be transferred automatically to the RDAC register to set the wiper position at system power ON. Such operation is enabled by the internal preset strobe and the preset can also be accessed externally.

The basic mode of adjustment is the increment and decrement from the present setting of the Wiper position setting (RDAC) register. An internal scratch pad RDAC register can be moved UP or DOWN, one step of the nominal resistance between terminals A-and-B. This linearly changes the wiper-to-B terminal resistance (RWB) by one out of 64/256 positions of the AD5251/AD5252 end- to-end resistance (RAB). For non-linear changes in wiper setting, a left/right shift command adjusts levels in 6dB steps, which can be useful for sound and light alarm applications.

The AD5251/AD5252 is available in the thin TSSOP-14 package. All parts are guaranteed to operate over the extended industrial temperature range of -40°C to +125°C.

EVAL-AD5252EBZ 特点
EVAL-AD5252EBZ 功能框图

AD5252 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
AD5252BRU1 量产 14 ld TSSOP 14 汽车级
AD5252BRU1-RL7 量产 14 ld TSSOP 14 汽车级
AD5252BRU10 量产 14 ld TSSOP 14 汽车级
AD5252BRU10-RL7 量产 14 ld TSSOP 14 汽车级
AD5252BRU100 量产 14 ld TSSOP 14 汽车级
AD5252BRU100-RL7 量产 14 ld TSSOP 14 汽车级
AD5252BRU50 量产 14 ld TSSOP 14 汽车级
AD5252BRU50-RL7 量产 14 ld TSSOP 14 汽车级
AD5252BRUZ1 量产 14 ld TSSOP 14 汽车级
AD5252BRUZ1-RL7 量产 14 ld TSSOP 14 汽车级
AD5252BRUZ10 量产 14 ld TSSOP 14 汽车级
AD5252BRUZ10-RL7 量产 14 ld TSSOP 14 汽车级
AD5252BRUZ100 量产 14 ld TSSOP 14 汽车级
AD5252BRUZ100-RL7 量产 14 ld TSSOP 14 汽车级
AD5252BRUZ50 量产 14 ld TSSOP 14 汽车级
AD5252BRUZ50-RL7 量产 14 ld TSSOP 14 汽车级
EVAL-AD5252EBZ 量产 评估板 - 待定
EVAL-AD5252EBZ 应用技术支持与电子电路设计开发资源下载
  1. AD5252 数据手册DataSheet下载 . pdf
  2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf