Renesas X9511WSIT2

Overview

X9511WSIT2 from Intersil is a push-button controlled digital potentiometer (XDCP™) with 32 linear tap positions, 10kΩ end-to-end resistance, ±5V terminal voltage range, and nonvolatile wiper position storage in EEPROM. It functions as a digitally adjustable voltage divider or variable resistor in analog signal conditioning circuits, supporting manual and AUTOSTORE®-enabled power-up recall in industrial control interfaces.

For engineers reviewing the X9511WSIT2 datasheet, X9511WSIT2 pinout, X9511WSIT2 application, or X9511WSIT2 equivalent, this device serves as a drop-in replacement for mechanical potentiometers where long-term wiper position retention, push-button simplicity, and ±5V bipolar operation are required - especially in calibration, sensor offset trimming, and programmable gain stages.

Technical Context

The X9511WSIT2 implements a 5-bit up/down counter driving a 32-position decoder to select one of 31 resistive elements in series. Its internal debounce circuitry (40ms typical) ensures reliable push-button actuation on PU and PD inputs, with slow-scan (≤1s hold) and fast-scan (>1s hold) modes enabling efficient coarse/fine adjustment.

Wiper position is stored in on-chip EEPROM with 100-year data retention and recalled at power-up when AUTOSTORE® is enabled via ASE pin. The device operates with VCC = 5V ±10%, supports ±1mA wiper current, and maintains ratiometric temperature coefficient of ±20 ppm/°C for stable voltage-divider performance across -40°C to +85°C.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (MDP0027), RoHS-compliant, surface-mount, -40°C to +85°C industrial temperature grade.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5241BRMZ10 and MCP41010-I/P, the X9511WSIT2 uniquely combines push-button autonomy, bipolar ±5V operation, and guaranteed EEPROM retention - making it optimal for unattended, human-interface-driven analog tuning where MCU resources or serial buses are unavailable or undesirable.

Availability

X9511WSIT2 is available at Aetrix Electronics and suitable for industrial HMI panels, sensor calibration fixtures, audio equipment manufacturing, and programmable analog front-ends requiring stable component supply and long-lifecycle support.

Supply support for X9511WSIT2 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 industrial, computing, and communications markets, with ISO9001-certified manufacturing.

The X9511WSIT2 belongs to Intersil's XDCP™ (Xicor Digital Controlled Potentiometer) family, engineered specifically for replacing mechanical potentiometers in environments demanding reliability, nonvolatile setting retention, and direct push-button usability without microcontroller dependency.

FAQ

What is the operating temperature range for the X9511WSIT2?

The X9511WSIT2 is rated for industrial operation from -40°C to +85°C. This range is confirmed in the ordering information table (X9511WSI variant) and supported by temperature-coefficient specifications including +300 ppm/°C typical TCR and ±20 ppm ratiometric coefficient across that span. The SOIC package (MDP0027) is qualified for this full range, making the X9511WSIT2 suitable for harsh-environment embedded systems where thermal stability is critical.

Does the X9511WSIT2 require an external microcontroller to function?

No, the X9511WSIT2 operates autonomously without any microcontroller. It uses two dedicated push-button inputs (PU and PD) with on-chip debouncing and scan-mode logic, plus an ASE pin for AUTOSTORE® or manual store. All control, counting, decoding, and EEPROM storage are self-contained. The X9511WSIT2 is designed explicitly for applications where serial interfaces are impractical - such as front-panel analog adjustment in test equipment or calibration fixtures.

How does AUTOSTORE® work on the X9511WSIT2?

AUTOSTORE® on the X9511WSIT2 automatically saves the current wiper position to EEPROM when VCC drops below 3.5V (VASEND) while ASE is held LOW. Upon next power-up, the stored value is recalled and the wiper repositions accordingly. This behavior is confirmed in the "AUTOSTORE" section (Page 4) and timing diagram (Page 7). ASE must be hard-wired to VSS for full AUTOSTORE® functionality; if left HIGH, manual store via ASE edge-triggering is used instead.

What is the maximum wiper current rating for the X9511WSIT2?

The X9511WSIT2 has a maximum wiper current rating of ±1mA, as specified in both Absolute Maximum Ratings (Page 5) and Electrical Characteristics (Page 5). This limits the minimum load impedance to approximately 5kΩ when used in a voltage-divider configuration with ±5V terminals. Exceeding ±1mA risks degradation of wiper contact resistance or long-term EEPROM reliability, so design must ensure compliance under all operating conditions.

Can the X9511WSIT2 be used with bipolar analog signals?

Yes, the X9511WSIT2 supports true bipolar operation: VH and VL terminals accept voltages from -5V to +5V referenced to VSS, and the wiper (VW) delivers a proportional output within that range. This is explicitly stated in the title ("Terminal Voltage ±5V") and confirmed in the PIN DESCRIPTIONS (Page 3) and ABSOLUTE MAXIMUM RATINGS (Page 5). Unlike many digital potentiometers limited to unipolar rails, the X9511WSIT2 is suited for AC-coupled, dual-supply, or offset-voltage analog paths.