Intersil ISL22424TFR16Z-TK

Description
The ISL22424 is a dual digitally controlled potentiometer (DCP) that integrates two DCPs, control logic, and non-volatile memory on a single CMOS IC. The DCPs are implemented with resistor elements and CMOS switches, and their wiper positions are controlled via an SPI serial interface. Each potentiometer has a volatile Wiper Register (WRI) and a non-volatile Initial Value Register (IVRI) that can be directly written to and read by the user. The contents of the WRIs control the wiper positions, and at power-up, the device recalls the contents of the DCP's IVRIs to the corresponding WRIs.
The ISL22424 also features 13 General Purpose non-volatile registers for storing lookup tables or other valuable information. It operates with a dual supply, allowing for a bipolar range for DCP terminals between V- and VCC-. Each DCP can be used as a three-terminal potentiometer or a two-terminal variable resistor in various applications, including control, parameter adjustments, and signal processing.

Features
Two potentiometers in one package
256 resistor taps
SPI serial interface with write/read capability
Daisy Chain Configuration
Shutdown mode
Non-volatile EEPROM storage of wiper position
13 General Purpose non-volatile registers
High reliability:
Endurance: 1,000,000 data changes per bit per register
Register data retention: 50 years @Ts 55°C
Wiper resistance: 70Ω typical @ 1mA
Standby current <4μA max
Shutdown current <4uA max
Dual power supply:
Vcc -2.25V to 5.5V
V-- -2.25V to 5.5V
10kΩ, 50kΩ, or 100kΩ ≤2 total resistance
Extended industrial temperature range: -40°C to 125°C
14 Ld TSSOP or 16 Ld QFN
Pb-free plus anneal product (RoHS compliant)

Applications
Control
Parameter adjustments
Signal processing