1-/2-/4-Channel
Digital Potentiometers
AD8400/AD8402/AD8403
FUNCTIONAL BLOCK DIAGRAM 256-position variable resistance device
Replaces 1, 2, or 4 potentiometers
1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
Power shutdown—less than 5 μA
3-wire,SPI-compatible serial data input
10 MHz update data loading rate
2.7 V to 5.5 V single-supply operation
Qualified for automotive applications AD8403 VDD 8-BIT 8
LATCH
DAC
SELECT DGND CK RS
1
2
8-BIT
LATCH 3
A1, A0 4 10-BIT
SERIAL
LATCH APPLICATIONS SDI Mechanical potentiometer replacement
Programmable filters, delays, time constants
Volume control, panning …