AD8402ARUZ1-REEL:  2-Channel Digital Potentiometer

The AD8400/AD8402/AD8403 provide a single, dual or quad channel, 256 position digitally controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a potentiometer or variable resistor. The AD8400 contains a single variable resistor in the compact SO-8 package. The AD8402 contains two independent variable resistors in saving SO-14 surface mount package. The AD8403 contains four independent variable resistors in 24-lead PDIP, SOIC and TSSOP packages. Each part contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the controlling serial input register. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. Each variable resistor offers a completely programmable value of resistance, between the A terminal and the wiper or the B terminal and the wiper. The fixed A to B terminal resistance of 1 kOhm, 10 kOhm, 50 kOhm or 100 kOhm has a ±1% channel-to-channel matching tolerance with a nominal temperature coefficient of 500 ppm/°C. A unique switching circuit minimizes the high glitch inherent in traditional switched resistor designs avoiding any make-before-break or break-before-make operation.

Each VR has its own VR latch that holds its programmed resistance value. These VR latches are updated from an SPI compatible serial-to-parallel shift register that is loaded from a standard 3-wire serial-input digital interface. Ten data bits make up the data word clocked into the serial input register. The data word is decoded where the first two bits determine the address of the VR latch to be loaded, the last eight bits are data. A serial data output pin at the opposite end of the serial register allows simple daisy-chaining in multiple VR applications without additional external decoding logic

AD8402ARUZ1-REEL 特点
AD8402ARUZ1-REEL 功能框图

AD8402 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
AD8402AN10 量产 14 ld PDIP 14 工业
AD8402ANZ10 量产 14 ld PDIP 14 工业
AD8402AR1 量产 14 ld SOIC 14 工业
AD8402AR1-REEL 量产 14 ld SOIC 14 工业
AD8402AR10 量产 14 ld SOIC 14 工业
AD8402AR10-REEL 量产 14 ld SOIC 14 工业
AD8402AR100 量产 14 ld SOIC 14 工业
AD8402AR100-REEL 量产 14 ld SOIC 14 工业
AD8402AR50 量产 14 ld SOIC 14 工业
AD8402AR50-REEL 量产 14 ld SOIC 14 工业
AD8402ARU1 量产 14 ld TSSOP 14 汽车级
AD8402ARU10 量产 14 ld TSSOP 14 工业
AD8402ARU10-REEL 量产 14 ld TSSOP 14 工业
AD8402ARU100 量产 14 ld TSSOP 14 工业
AD8402ARU100-REEL 量产 14 ld TSSOP 14 工业
AD8402ARU50 量产 14 ld TSSOP 14 汽车级
AD8402ARU50-REEL 量产 14 ld TSSOP 14 汽车级
AD8402ARUZ1 量产 14 ld TSSOP 14 汽车级
AD8402ARUZ1-REEL 量产 14 ld TSSOP 14 汽车级
AD8402ARUZ10 量产 14 ld TSSOP 14 汽车级
AD8402ARUZ10-REEL 量产 14 ld TSSOP 14 汽车级
AD8402ARUZ100 量产 14 ld TSSOP 14 汽车级
AD8402ARUZ100-REEL 量产 14 ld TSSOP 14 汽车级
AD8402ARUZ50 量产 14 ld TSSOP 14 汽车级
AD8402ARUZ50-REEL 量产 14 ld TSSOP 14 汽车级
AD8402ARZ1 量产 14 ld SOIC 14 汽车级
AD8402ARZ1-REEL 量产 14 ld SOIC 14 汽车级
AD8402ARZ10 量产 14 ld SOIC 14 汽车级
AD8402ARZ10-REEL 量产 14 ld SOIC 14 汽车级
AD8402ARZ100 量产 14 ld SOIC 14 汽车级
AD8402ARZ100-REEL 量产 14 ld SOIC 14 汽车级
AD8402ARZ50 量产 14 ld SOIC 14 汽车级
AD8402ARZ50-REEL 量产 14 ld SOIC 14 汽车级
AD8402ARUZ1-REEL 应用技术支持与电子电路设计开发资源下载
  1. AD8402 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