Single/Dual, +15 V/±5 V, 256-Position,
I2C-Compatible Digital Potentiometer
AD5280/AD5282 APPLICATIONS The AD5280/AD5282 are available in thin, surface-mounted
14-lead TSSOP and 16-lead TSSOP. All parts are guaranteed to
operate over the extended industrial temperature range of
−40°C to +85°C. For 3-wire SPI-compatible interface applications, see the AD5260/AD5262 product information on
www.analog.com. FUNCTIONAL BLOCK DIAGRAMS
A O1 O2 VDD
VL
VSS RDAC REGISTER OUTPUT REGISTER ADDRESS
CODE
8 PWR ON
RESET SCL
SERIAL INPUT REGISTER SDA GENERAL DESCRIPTION Wiper position programming defaults to midscale at system
power-on. When powered, the VR wiper position is programmed
by an I2C-compatible, 2-wire serial data interface. The AD5280/
AD5282 feature sleep mode programmability. This allows any
level of preset in power-up and is an alternative to a costly
EEPROM solution. Both parts have additional programmable B SHDN Multimedia, video, and audio
Communications
Mechanical potentiometer replacement
Instrumentation: gain, offset adjustment
Programmable voltage source …