ON Semiconductor CAT5419WI-10-T1

Description
The CAT5419 is a dual digital potentiometer (POT) with 64 taps and a 2-wire interface. It integrates control logic and 16 bytes of NVRAM memory. Each POT has a separate 6-bit control register (WCR) that independently controls the wiper tap position. Associated with each WCR are four 6-bit non-volatile memory data registers (DR) for storing up to four wiper settings. Writing to the WCR or DRs is done via a 2-wire serial bus (I²C-like). On power-up, the contents of the first DR (DRO) for each POT are automatically loaded into their respective WCRs. The Write Protection (WP) pin prevents inadvertent programming of the DRs.

Features
Two linear-taper digital potentiometers
64 resistor taps per potentiometer
End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, or 100 kΩ
Potentiometer control and memory access via 2-wire interface (I²C-like)
Low wiper resistance (typically 80 Ω)
Four non-volatile wiper settings for each potentiometer
Recall of wiper settings at power-up
2.5 to 6.0 V operation
Standby current less than 1 μA
1,000,000 nonvolatile write cycles
100-year nonvolatile memory data retention
24-lead SOIC and 24-lead TSSOP packages

Applications
Circuit level or system level adjustments
Potentiometer or variable resistor replacement
Volume control
Gain adjustment
Offset adjustment
Current limiting
Voltage regulation