AD8402ARZ10

The AD8402ARZ10 is a dual-channel 256-position digital potentiometer from Analog Devices, designed to replace mechanical potentiometers in a wide range of applications. Each of the two independent variable resistors has a total resistance of 10kΩ with a wiper resistance of 200Ω between wiper and B terminal. The linear taper and SPI-compatible serial interface allow precise digital control of the wiper position. The device operates from a single 2.7V to 5.5V supply and draws less than 5μA in shutdown mode, making it suitable for battery-powered designs. The digital potentiometer offers a typical data loading rate of up to 10MHz and provides 256 taps per channel, enabling fine resolution adjustments. The resistance tolerance is ±20% with a temperature coefficient of 500ppm/°C. The volatile memory configuration ensures the wiper position resets to mid-scale on power-up. This device is ideal for applications such as programmable filters, volume control, line impedance matching, and power supply adjustment. It is qualified for automotive applications and operates over an extended temperature range of -40°C to +125°C. The AD8402ARZ10 is housed in a 14-SOIC surface-mount package with a 0.154-inch width and 3.90mm body. The device is RoHS3 compliant and has an MSL of 1 (unlimited).