Key features
Two potentiometers per pack
128 resistance faucet
10KΩ50KΩ or 100kΩ total resistance
SPI serial interface
No additional level translates to low bus power
Multiple dutiable licenses for daisy chains
power supply
V CC = 1.7V to 5.5V analog power supply
Up to Five Logic = 1.2V to 5.5V SPI bus/logic supply
Maximum supply current without serial bus activity (standby)
4μ A@ V CC and V logic = 5V
1.7μ A@ V CC and V logic = 1.7V
Shutdown mode
The troops enter the terminal at the end of the open circuit and the internal connection of the RWI DCP to the RLI
The resistance of the DCP is disconnected from the circuit, reducing power dissipation
Tap resistance: 70Ω typical @ V CC = 3.3V
Power-up preset to medium size (64 tap positions)
Extended industrial temperature range: -40°C to +125°C
14 LD TSSOP or 16 LD UTQFN package
Pb-free (RoHS compliant)
description
The ISL23428 is a volatile, low voltage, low noise, low power consumption, 128-tap, dual numerical control potentiometer (DCP) SPI bus ™ interface. It integrates two DCP cores, wiper switches and control logic in a monolithic CMOS integrated circuit. Each digitally controlled potentiometer is implemented in a combination of resistive elements and CMOS switches. The position of the wipers is controlled by the user via the SPI bus interface. Each potentiometer has an associated volatile wiper register (WRI, i=0,1) that can be written and read directly to the user. The WRI content controls the position of the wipers. When powered on, each DCP wiper will always start at medium size (64-tap position), low voltage, low power consumption, small package ISL23428, making it ideal for use in battery-powered equipment. In addition, the ISL23428 has a V logic pin that allows the operation of a bus down to 1.2V independent of the CC value from V. This allows the DCP to be used in a variety of applications, including as a three-terminal potentiometer or two-terminal variable resistor control, parameters can be connected directly without voltage level translators, and the ISL23428 is a low logic level. Adjustment and signal processing.