The N57M5127 is a single digital POT designed as an electronic replacement for mechanical potentiometers and trim pots. Ideal for automated adjustments on high volume production lines, it is also well suited for applications where equipment requiring periodic adjustment is either difficult to access or located in a hazardous or remote environment.
The N57M5127 contains a 32-tap series resistor array connected between two terminals R
and R
. An up/down counter and decoder that are controlled by three input pins, determines which tap is connected to the wiper. The wiper setting, stored in nonvolatile memory, is not lost when the device is powered down and is automatically reinstated when power is returned. The wiper can be adjusted to test new system values without affecting the stored setting. Wiper-control of the N57M5127 is accomplished with three input control pins,
, U/
, and
. The
input increments the wiper in the direction which is determined by the logic state of the U/
input. The
input is used to select the device and also store the wiper position prior to power down.
The device is used as a two-terminal variable resistor. Digital POTs bring variability and programmability to a wide variety of applications including control, parameter adjustments, and signal processing.

• 32-position Linear Taper Potentiometer
• Non-volatile EEPROM Wiper Storage
• Low Standby Current
• Single supply operation: 2.5 V - 5.5 V
• Increment Up/Down Serial Interface
• Resistance Values: 10 kΩ, 50 kΩ, and 100 kΩ