General Description

The AS1507 is a linear, dual 256-tap digital potentiome ter specifically designed to replace discrete/mechanical potentiometers and is ideal for applications requiring a low-temperature-coefficient variable resistor.

The device is controlled via a 3-wire SPI-compatible interface and features an internal EEPROM for storing wiper positions.

2 Key Features

High Endurance: EEPROM up to 10M cycles

High Reliability: EEPROM up to 150 years data retention @ 85°C

Wiper Position Retained in EEPROM and loaded at Power-Up

256 Tap Positions

±0.5LSB DNL in Voltage Divider Mode

±0.5LSB INL in Voltage Divider Mode

End-to-End Resistance: 10/50/100kΩ

Low End-to-End Resistance Temperature Coefficient: 90ppm/ºC

Low-Power Standby Mode: 100nA

5MHz SPI-Compatible Serial Interface

Single-Supply Operation: +2.7 to +5.5V

TQFN 3x3mm 16-pin Package

Applications

The device is ideal for mechanical potentiometer replacement, low-drift programmable gain amplifiers, audio volume control, LCD contrast control, and low-drift programmable filters.