AD5242

Data Sheet I2C-Compatible, 256-Position Digital Potentiometers AD5241/AD5242 00926-001 FEATURES 256 positions 10 kΩ, 100 kΩ, 1 MΩ Low temperature coefficient: 30 ppm/°C Internal power on midscale preset Single-supply 2.7 V to 5.5 V or dual-supply ±2.7 V for ac or bipolar operation I2C-compatible interface with readback capability Extra programmable logic outputs Self-contained shutdown feature Extended temperature range: −40°C to +105°C APPLICATIONS Multimedia, video, and audio Communications Mechanical potentiometer replacement Instrumentation: gain, offset adjustment Programmable voltage-to-current conversion Line impedance matching FUNCTIONAL BLOCK DIAGRAM A1 W1 B1 O1 O2 SHDN VDD RDAC REGISTER 1 VSS REGISTER 2 ADDR DECODE AD5241 8 SDA SCL GND SERIAL INPUT REGISTER PWR-ON RESET AD0 AD1 Figure 1. AD5241 Functional Block Diagram A1 W1 B1 A2 W2 B2 O1 O2 SHDN REGISTER VDD RDAC RDAC REGISTER 1 REGISTER 2 VSS SDA SCL GND ADDR DECODE 1 AD5242 8 S...