X93156WM8IZ-2.7T1

Digital Potentiometers Overview

The X93156WM8IZ-2.7T1 is a single digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics Corporation, formerly Intersil. It features a 12.5kΩ total resistance with 32 wiper tap points and operates within a supply voltage range of 2.7V to 5.5V. The device utilizes an Up/Down control interface consisting of CS, U/D, and INC inputs to manage the wiper position across 31 resistive elements. Key specifications include a maximum active current of 300µA at 5V, standby current of 2µA max, and nonvolatile memory for data retention up to 100 years. It is housed in an 8-lead MSOP package.

Digital Potentiometers Feature Summary

• Up/Down Interface: Wiper position controlled via CS, U/D, and INC inputs.
• Nonvolatile Memory: Stores wiper position upon power-down and recalls it on power-up.
• Low Power Operation: Active current typically 200µA; standby current max 2µA.
• High Reliability: Endurance of 200,000 data changes per bit.

Digital Potentiometers Applications

• Programming bias voltages
• LCD brightness and contrast control
• Implementation of ladder networks

Digital Potentiometers Procurement Notes

Verify RoHS compliance and Pb-free status through official manufacturer documentation or authorized distributors. Confirm the specific suffix '-T1' indicates tape and reel packaging as defined in the datasheet ordering information. Ensure the component meets industrial temperature requirements (-40°C to +85°C).

Digital Potentiometers Selection Notes

Select this component when a solid-state replacement for mechanical trimmers is required in low-power applications. Verify that the 12.5kΩ resistance value and 32-tap resolution meet circuit design needs. Ensure the system supports the 3-wire Up/Down serial interface for configuration.

Digital Potentiometers Part Context

This part belongs to the X9315 series of digitally controlled potentiometers. It is specifically designed for applications requiring precise resistance adjustment without mechanical components. The 'Z' suffix denotes Pb-free construction, and 'T1' indicates tape and reel packaging.

Digital Potentiometers Replacement Considerations

The datasheet explicitly states 'NOT RECOMMENDED FOR NEW DESIGNS' and 'NO RECOMMENDED REPLACEMENT'. Engineers should consult the manufacturer's technical support center for potential alternatives or updated product lines.

Digital Potentiometers FAQ

How is the wiper position stored?

The wiper position is stored in nonvolatile memory when the CS input transitions HIGH while the INC input is also HIGH.

What is the maximum endurance of the device?

The device has a minimum endurance of 200,000 data changes per bit.

Can the wiper move beyond the last position?

No, the counter does not wrap around when clocked to either extreme; the wiper acts like its mechanical equivalent and stops at the fixed terminals.