CAT5419

Features:

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




Pinout






Specifications

Temperature Under Bias ................ -55°C to +125°C
Storage Temperature ..................... -65°C to +150°C
Voltage on any Pin with
Respect to V_SS ⁽¹⁾⁽²⁾ ............... -2.0V to +VCC +2.0V
V_CC with Respect to Ground ................ -2.0V to +7.0V
Package Power Dissipation
Capability (T_A = 25°C) ................................... 1.0W
Lead Soldering Temperature (10 secs) ............ 300°C
Wiper Current.................................................. +12mA




Description

The CAT5419 is two Digitally Programmable Potentiometers (DPP™) integrated with control logic and 16 bytes of NVRAM memory.

CAT5419 separate 6-bit control register (WCR) independently controls the wiper tap position for each DPP. Associated with each wiper control register are four 6-bit nonvolatile 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 2-wire serial bus (I²C-like). On power-up, the contents of the first data register (DR0) for each of the two potentiometers is automatically loaded into its respective wiper control registers (WCR).

The Write Protection (WP) pin CAT5419 protects against inadvertent programming of the data register.

The CAT5419 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.