Nonvolatile Digital Potentiometer
Data Sheet
FEATURES
10 kΩ and 100 kΩ resistance options Resistor tolerance: 8% maximum Wiper current: ±6 mA Low temperat...
Description
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...
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