ISL90460
Single Volatile 32-Tap Digitally Controlled Potentiometer (XDCP™)

Key Features

• Volatile Solid-State Potentiometer
• 2-pin UP/DN Interface
• DCP Terminal Voltage, 2.7V to 5.5V
• Tempco 35ppm/°C Typical
• 32 Wiper Tap Points
• Low Power CMOS
• Active current 25µA max.
• Supply current 0.3µA
• Available RTOTAL Values = 10kΩ, 50kΩ, 100kΩ
• Temp Range -40°C to +85°C
• Packages
• 5 Ld SC-70, SOT-23
• Pb-Free Plus Anneal Available (RoHS Compliant)

Description

The Intersil ISL90460 is a digitally controlled potentiometer (XDCP). Configured as a variable resistor, the device consists of a resistor array, wiper switches, a control section, and volatile memory. The wiper position is controlled by a 2- pin Up/Down interface.

The potentiometer is implemented by a resistor array composed of 31 resistive elements and a wiper switching network. Between each element and at either end are tap points accessible to the wiper terminal. The position of the wiper element is controlled by the CS and U/D inputs. The device can be used in a wide variety of applications including:

• LCD contrast control
• Parameter and bias adjustments
• Industrial and automotive control
• Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
• Laser Diode driver biasing
• Gain control and offset adjustment