Renesas X9511WSZ

Overview

X9511WSZ from Intersil is a push-button controlled digital potentiometer (XDCP™) with 32 linear tap positions, 10kΩ end-to-end resistance, ±5V terminal voltage range, nonvolatile wiper position storage, and 8-lead SOIC RoHS-compliant packaging - used for precision analog trimming in power supply feedback loops, sensor calibration, and LED brightness control.

For engineers reviewing the X9511WSZ datasheet, X9511WSZ pinout, X9511WSZ application, or X9511WSZ equivalent, this page delivers verified specifications, validated pin functions, confirmed use cases in analog signal conditioning, and two field-tested alternative parts with documented functional trade-offs.

Technical Context

The X9511WSZ implements a 5-bit up/down counter driving a 32-position decoder to select taps across a monolithic 31-element resistor array. Its internal AUTOSTORE® logic triggers EEPROM write on VCC drop when ASE is low, ensuring power-up recall of last wiper position.

Debounced PU/PD inputs accept mechanical push-button actuation with 40ms typical debounce time, supporting both single-step and continuous fast-scan mode (>1s hold). Wiper output (VW) delivers ratiometric voltage division with ±1.0 MI absolute linearity and ±0.2 MI relative linearity.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (MDP0027), RoHS-compliant, Pb-free matte tin finish, compatible with standard reflow soldering.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9511WSZ, AD5204BRUZ10 offers quad-channel integration but lacks autonomous push-button operation and nonvolatile storage, while MCP41010-I/P provides lower cost and faster SPI updates but requires external memory management and loses settings at power-off.

Availability

X9511WSZ is available at Aetrix Electronics and suitable for power supply trimming, sensor calibration, LED current control, and analog audio adjustment requiring stable component supply, long-term calibration retention, and RoHS-compliant packaging.

Supply support for X9511WSZ 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, with ISO9001-certified manufacturing and a focus on reliability in industrial and automotive environments.

The X9511WSZ belongs to Intersil's XDCP™ (Xicor Digital Controlled Potentiometer) family, engineered specifically for replacing mechanical potentiometers in applications demanding push-button usability, nonvolatile memory, and robust analog performance over temperature.

FAQ

What is the operating voltage range for the X9511WSZ terminals VH and VL?

The X9511WSZ supports −5V to +5V on both VH and VL terminals, enabling direct use in bipolar analog circuits such as op-amp offset nulling or AC-coupled signal conditioning. This range is independent of VCC, which operates at +5V ±10%. The device maintains specified linearity and resistance tolerance across this full voltage span, making X9511WSZ suitable for applications where signal rails exceed unipolar supply limits.

How does the AUTOSTORE® function work on the X9511WSZ?

On the X9511WSZ, AUTOSTORE® automatically writes the current wiper position to EEPROM when VCC drops below 4V (VASTH) while ASE is held LOW. Upon next power-up, the stored value is recalled to initialize the wiper. If ASE is HIGH, manual store is triggered by pulsing ASE LOW. This dual-mode capability ensures X9511WSZ retains calibration even after unexpected power loss, eliminating need for external supervision or host MCU intervention.

Can the X9511WSZ be used in a 3.3V system?

The X9511WSZ is specified for VCC = +5V ±10%, so it is not rated for direct 3.3V operation. While some units may function at 3.3V, parameters like debounce time, wiper speed, and EEPROM reliability are not guaranteed outside the 4.5V–5.5V range. For 3.3V systems, consider alternatives like the MCP4017T-E/OT, but note that X9511WSZ requires strict adherence to its 5V supply specification to ensure full functionality and 100-year data retention.

What is the maximum wiper current rating for the X9511WSZ?

The X9511WSZ has a maximum wiper current rating of ±1mA. Exceeding this limit risks permanent damage to the internal CMOS transfer gates and degrades long-term reliability. In practice, this restricts use to low-current applications such as op-amp biasing, sensor bridge nulling, or feedback network trimming - not high-side switching or power-stage current sensing. Designers must verify that load conditions keep VW current within ±1mA for all VH/VL combinations across temperature.

Does the X9511WSZ require external components for push-button interfacing?

No, the X9511WSZ integrates internal pull-up resistors (~100kΩ) on PU, PD, and ASE pins, allowing direct connection of momentary switches to ground with no external resistors or capacitors needed. Its on-chip 40ms debounce circuit eliminates mechanical bounce, and the slow/fast scan modes respond predictably to single or sustained button presses - making X9511WSZ a true plug-and-play replacement for mechanical potentiometers in user-adjustable analog systems.