Renesas X93156WM8IZ

Overview

X93156WM8IZ from Intersil is a single digitally controlled potentiometer (XDCP™) with 32-tap resolution, nonvolatile wiper position storage, and 12.5kΩ end-to-end resistance. It operates from 2.7V to 5.5V, draws 200µA typical active current and 2µA max standby current, and uses an Up/Down serial interface for wiper control. It serves as a programmable voltage divider in LCD contrast/brightness adjustment circuits.

For engineers reviewing the X93156WM8IZ datasheet, X93156WM8IZ pinout, X93156WM8IZ application, or X93156WM8IZ equivalent, key selection criteria include its 8-lead MSOP package, ±25% RTOTAL tolerance, -40°C to +85°C industrial temperature range, nonvolatile memory retention (100 years), and compatibility with low-power embedded trim applications requiring no external EEPROM.

Technical Context

The X93156WM8IZ implements a 31-element resistor array with CMOS-controlled transfer gates selecting one of 32 wiper positions via a 5-bit up/down counter. Wiper position is stored in nonvolatile memory upon CS↑ with INC HIGH and recalled automatically at power-up.

Its operation requires only three digital control lines (CS, U/D, INC), supports negative-edge-triggered increment/decrement, and maintains terminal voltages within 0–VCC. The device exhibits ±35ppm/°C RTOTAL temperature coefficient and -120dBV noise referenced to 1kHz.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (Pb-free, RoHS compliant), JEDEC MO-187AA footprint (M8.118), thermal resistance θJA = 190°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digitally controlled potentiometer applications.

Compared with AD5170BRMZ-10 and MCP4017T-103I/OT, the X93156WM8IZ uniquely balances 2.7–5.5V operation, nonvolatile recall, and minimal GPIO usage-making it optimal for resource-constrained industrial controls where reliability and zero-boot calibration are critical.

Availability

X93156WM8IZ is available at Aetrix Electronics and suitable for LCD contrast control, analog bias programming, LED brightness trim, and audio volume adjustment requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for X93156WM8IZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Intersil Corporation (now part of Renesas Electronics) designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.

The X93156WM8IZ belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered for replacing mechanical trimmers in industrial, automotive, and consumer systems needing nonvolatile setting retention and low-power operation.

FAQ

What is the maximum operating voltage for the X93156WM8IZ?

The X93156WM8IZ supports a supply voltage range of 2.7V to 5.5V. Its absolute maximum rating is 6.5V on any pin relative to VSS, but recommended operation is strictly within 2.7–5.5V to ensure reliable nonvolatile memory writes and specified performance. Exceeding 5.5V may compromise EEPROM endurance or cause latch-up.

Does the X93156WM8IZ retain its wiper position after power cycling?

Yes, the X93156WM8IZ stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior requires the CS pin to be held HIGH during initial power application. The stored value persists for up to 100 years and withstands 200,000 write cycles, making the X93156WM8IZ ideal for maintenance-free calibration in deployed systems.

Can the X93156WM8IZ be used as a two-terminal variable resistor?

Yes, the X93156WM8IZ can operate as a two-terminal variable resistor by connecting either RH or RL to Rw and using the remaining terminal with VSS or VCC. Its 12.5kΩ RTOTAL and 1100Ω max wiper resistance support this configuration, though total usable resistance range becomes 0–12.5kΩ with nonlinear taper depending on connection topology.

What is the noise performance of the X93156WM8IZ and how does it affect signal integrity?

The X93156WM8IZ delivers -120dBV noise referenced to 1kHz, measured across the resistor array. This low noise floor ensures minimal interference when used in sensitive analog paths such as audio volume control or sensor bias networks. Unlike mechanical pots, it introduces no contact bounce or scratch noise, preserving signal fidelity in real-time applications.

Is the X93156WM8IZ RoHS compliant and what is its package type?

Yes, the X93156WM8IZ is RoHS compliant and packaged in an 8-lead MSOP (Mini Small Outline Plastic) with Pb-free terminations (matte tin anneal e3 finish). Its JEDEC MO-187AA footprint (M8.118) supports standard reflow profiles including Pb-free soldering, and thermal resistance is characterized at θJA = 190°C/W.