AD5124

Data Sheet FEATURES 10 kΩ and 100 kΩ resistance options Resistor tolerance: 8% maximum Wiper current: ±6 mA Low temperature coefficient: 35 ppm/°C Wide bandwidth: 3 MHz Fast start-up time < 75 µs Linear gain setting mode Single- and dual-supply operation Independent logic supply: 1.8 V to 5.5 V Wide operating temperature: −40°C to +125°C 4 mm × 4 mm package option APPLICATIONS Portable electronics level adjustment LCD panel brightness and contrast controls Programmable filters, delays, and time constants Programmable power supplies Quad Channel, 128-/256-Position, I2C/SPI, Nonvolatile Digital Potentiometer AD5124/AD5144/AD5144A FUNCTIONAL BLOCK DIAGRAM VLOGIC VDD LRDAC POWER-ON RESET RESET DIS SCLK/SCL SDI/SDA SYNC/ADDR0 SDO/ADDR1 SERIAL INTERFACE 7/8 AD5124/AD5144 RDAC1 A1 INPUT REGISTER 1 W1 B1 RDAC2 A2 INPUT REGISTER 2 W2 B2 RDAC3 A3 INPUT REGISTER 3 W3 B3 RDAC4 A4 INPUT REGISTER 4 W4 B4 EEPROM MEMORY 10877-001 GND VSS WP Figure 1. AD5124/AD5144 24-Lead LFCSP GENERAL DESCRIPTION The AD5124/AD5144/AD5144A potentiometers provide a nonvolatile solution for 128-/256-position adjustment applications, offering guaranteed low resistor tolerance errors of ±8% and up to ±6 mA current density in the Ax, Bx, and Wx pins. The low resistor tolerance and low nominal temperature coefficient simplify open-loop applications as well as applications requiring tolerance matching. The linear gain setting mode allows independent programming of the resistance be...