Intersil ISL23328UFVZ

Description
The ISL23328 is a volatile, low voltage, low noise, low power, 128-Tap, dual digitally controlled potentiometer (DCP) with an I²C Bus interface. It integrates two DCP cores, wiper switches, and control logic on a monolithic CMOS integrated circuit. Each digitally controlled potentiometer is implemented with a combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the 12c bus interface. Each potentiometer has an associated volatile Wiper Register (WRI, i 0, 1) that can be directly written to and read by the user. The contents of the WRi controls the position of the wiper. When powered on, the wiper of each DCP will always commence at mid-scale (64 tap position).

Features
Two potentiometers per package
128 resistor taps
10kΩ, 50kΩ or 100kΩ total resistance
I²C serial interface - No additional level translator for low bus supply
Three address pins allow up to eight devices per bus
Power supply
Vcc: 1.7V to 5.5V analog power supply
VLOGIC: 1.2V to 5.5V I²C bus/logic power supply
Maximum supply current without serial bus activity (standby)
3μA @ Vcc and VLOGIC - 5V
1.7μA @ Vcc and VLOGIC -1.7V
Shutdown Mode
Forces the DCP into an end-to-end open circuit and RWi is connected to RLi internally
Reduces power consumption by disconnecting the DCP resistor from the circuit
Wiper resistance: 700Ω typical @ Vcc - 3.3V
Power-on preset to mid-scale (64 tap position)
Extended industrial temperature range: -40°C to 125°C
14 Ld TSSOP or 16 Ld UTQFN packages
Pb-free (RoHS Compliant)

Applications
Power supply margining
Trimming sensor circuits
Gain adjustment in battery powered instruments
RF power amplifier bias compensation