EVAL-AD5142-2DBZ

製品概要

This user guide describes the evaluation board for evaluating the AD5142—a digital potentiometer with 256 positions and nonvolative memory. With versatile programmability, the AD5142 allows multiple modes of operation, including read/write access in the RDAC and EEPROM registers, increment/decrement of resistance, resistance changes in ±6 dB scales, wiper setting readback, and extra elec tronically erasable programmable read‐only memory (EEPROM) for storing user-defined information, such as memory data for other components or a lookup table.

The AD5142 supports a dual supply (±2.25V to ±2.75V) operation and a single supply (+2.3V to +5.5V) operation, making the device suitable for battery-powered applications and many other applica tions. The EVAL-MB-LV-ARDZ incorporates an internal power sup ply from the USB and provides on-board +5V, +3V, +2.5V/−2.5V supplies to the EVAL-AD5142-2DBZ.

The EVAL-MB-LV-ARDZ interfaces with the USB port of a PC via the system demonstration platform (SDP-K1) controller board. The ACE software is available for download on the EVAL-AD5142-2DBZ product page. This software enables the user to program the AD5142. A peripheral module interface (PMOD) connection is also available that allows the connection of different microcontrollers to the EVAL-MB-LV-ARDZ without the SDP-K1 controller board. Note that when a microcontroller is used through the PMOD connection, the SDP-K1 board must be disconnected, and the user cannot use the ACE software.

Complete specifications for the AD5142 part can be found in the AD5142 data sheet, which is available from Analog Devices, and must be consulted in conjunction with this user guide when using the evaluation board.