ISL233x5, ISL234x5

Intersil’s 256-Tap DCPs Feature Industry’s Lowest Supply Voltages and Power Consumption

News Release from: Intersil
22 November 2011

Intersil Corporation has developed a new series of single, dual and quad digitally controlled potentiometers (DCPs) featuring the industry's lowest supply voltages, power consumption and noise.
The ISL233x5 and ISL234x5 provide the most flexible and reliable solution wherever a voltage or resistor setting is needed. Supply current is as low as 2.8uA at 5V, which is 40% to 50% lower than most competitive devices. Analog supply voltage can range from 1.7V to 5.5V.

The digital supply voltage may be even lower at 1.2V to 5.5V, eliminating the need for a level shifter if the MCU has low voltage digital interface outputs. Users can control the wiper position through either the I2C or SPI interface.

The ESD tolerance is a robust 6.5kV HBM, and the DCPs are offered in leaded packages for easy debugging as well as tiny microTQFN packages for space-constrained applications. Devices may be ordered with 10kOhm, 50kOhm or 100kOhm total resistances. They are designed for use as three-terminal potentiometers or as two-terminal variable resistors in portable medical instrumentation, network cards, smartphones, regulator margining and other applications requiring calibration or digital control.

Features and Specifications
Digital interface voltage range from 1.2V to 5.5V
Analog supply voltage range from 1.7V to 5.5V
The ISL233x5 has multiple address pins to allow up to four DCPs on one I2C bus, providing maximum design flexibility
The ISL234x5’s daisy-chain functionality for SPI devices allows users to link multiple DCPs on one set of I/O lines
Compact microTQFN package is 40% smaller than competitive devices