GENERAL DESCRIPTION

The AD5227 is Analog Devices’ latest 64-step up/down control digital potentiometer1. This device performs the same electronic adjustment function as a 5 V potentiometer or variable resistor. Its simple 3-wire up/down interface allows manual switching or high speed digital control.

FEATURES

64-position digital potentiometer

10 kΩ, 50 kΩ, 100 kΩ end-to-end terminal resistance

Simple up/down digital or manual configurable control

Midscale preset

Low potentiometer mode tempco = 10 ppm/°C

Low rheostat mode tempco = 35 ppm/°C

Ultralow power, IDD = 0.4 μA typ and 3 μA max

Fast adjustment time, ts = 1 μs

Chip select enable multiple device operation

Low operating voltage, 2.7 V to 5.5 V

Automotive temperature range, −40°C to +105°C

Compact thin SOT-23-8 (2.9 mm × 3 mm) Pb-free package

APPLICATIONS

Mechanical potentiometer and trimmer replacements

LCD backlight, contrast, and brightness controls

Portable electronics level adjustment

Programmable power supply

Digital trimmer replacements

Automatic closed-loop control