CAT5401WI-10-T1

四路数字可编程电位计（ DPPA ?? ¢ ）与64丝锥和SPI接口 Quad Digitally Programmable Potentiometers DPP™ with 64 Taps and SPI Interface

The CAT5401 is four digital POTs integrated with control logic and 16 bytes of NVRAM memory. Each digital POT consists of a series of 63 resistive elements connected between two externally accessible end points. The tap points between each resistive element are connected to the wiper outputs with CMOS switches. A separate 6-bit control register WCR independently controls the wiper tap switches for each digital POT. Associated with each wiper control register are four 6-bit non-volatile memory data registers DR used for storing up to four wiper settings. Writing to the wiper control register or any of the non-volatile data registers is via a SPI serial bus. On power-up, the contents of the first data register DR0 for each of the four potentiometers is automatically loaded into its respective wiper control register.The CAT5401 can be used as a potentiometer or as a two terminal, variable resistor. It is intended for circuit level or system level adjustments in a wide variety of applications.

Features

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Four linear-taper digital potentiometers

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64 resistor taps per potentiometer

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End to end resistance 2.5 kΩ, 10 kΩ, 50 kΩ or 100 kΩ

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Potentiometer control and memory access via SPI interface: Mode 0, 0 and 1, 1

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Low wiper resistance, typically 100 Ω

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Nonvolatile memory storage for up to four wiper settings for each potentiometer

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Automatic recall of saved wiper settings at power up

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2.5 to 6.0 volt operation

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Standby current less than 1μA

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1,000,000 nonvolatile WRITE cycles

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100 year nonvolatile memory data retention

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Industrial temperature range