资 源 简 介
The AD5235 is a dual-channel, nonvolaTIle memory,1 digitally controlled potenTIometer2 with 1024-step resoluTIon, offering guaranteed maximum low resistor tolerance error of ±8%. The device performs the same electronic adjustment funcTIon as a mechanical potentiometer with enhanced resolution, solid state reliability, and superior low temperature coefficient performance. The versatile programming of the AD5235 via an SPI®-compatible serial interface allows 16 modes of operation and adjustment including scratchpad programming, memory storing and restoring, increment/decrement, ±6 dB/step log taper adjustment, wiper setting readback, and extra EEMEM1 for userdefined information such as memory data for other components, look-up table, or system identification information.In the scratchpad programming mode, a specific setting can be programmed directly to the RDAC2 register, which sets the resistance between Terminal W and Terminal A and Terminal W and Terminal B. This setting can be stored into the EEMEM and is restored automatically to the RDAC register during system power-on.