Renesas X9511WSI

Overview

X9511WSI from Intersil is a push-button controlled digital potentiometer (XDCP™) with 32 linear tap positions, ±5V terminal voltage range, 10kΩ end-to-end resistance, -40°C to +85°C industrial temperature rating, and SOIC-8 package. It functions as a nonvolatile, manually adjustable analog resistance element in trimming, calibration, and bias control circuits.

For engineers reviewing the X9511WSI datasheet, X9511WSI pinout, X9511WSI application, or X9511WSI equivalent, this device supports manual wiper positioning via PU/PD inputs, AUTOSTORE® or manual store modes, slow/fast scan timing, and retains wiper position for 100 years without power.

Technical Context

The X9511WSI integrates a 5-bit up/down counter, 31-element resistor array, and EEPROM memory for wiper position storage. Its internal debounce circuitry rejects pulses under 30–40ms, enabling reliable push-button operation.

Wiper movement follows two distinct timing modes: slow scan (100–375ms per step) for fine adjustment and fast scan (25–90ms per step) after >1s continuous button press. AUTOSTORE triggers on VCC drop below 4V when ASE is low, completing a 2ms store cycle.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (MDP0027), RoHS-compliant, surface-mount, 3.9mm × 4.9mm footprint, 1.27mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5171BRMZ-10 and MCP4017T-103, the X9511WSI uniquely delivers self-contained push-button operation, automatic power-loss storage, and guaranteed 100-year data retention-enabling true set-and-forget analog trimming without host processor involvement.

Availability

X9511WSI is available at Aetrix Electronics and suitable for industrial sensor calibration, audio volume control, power supply feedback tuning, and LED bias adjustment requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for X9511WSI 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) is a U.S.-based semiconductor company specializing in precision analog, power management, and interface ICs for industrial, communications, and computing markets.

The X9511WSI belongs to Intersil's XDCP™ (Xicor Digital Controlled Potentiometer) family, designed specifically for replacing mechanical potentiometers in applications demanding nonvolatile storage, push-button usability, and robust analog performance across harsh environments.

FAQ

What is the operating voltage range for the analog terminals (VH and VL) of the X9511WSI?

The X9511WSI supports an analog terminal voltage range of -5V to +5V on both VH and VL pins. This bipolar capability allows direct interfacing with AC-coupled signals or op-amp stages operating with split supplies. The specification is absolute-not ratiometric-and remains valid across the full -40°C to +85°C temperature range. Exceeding ±5V violates absolute maximum ratings and may cause permanent damage.

Does the X9511WSI require external components for push-button operation?

No, the X9511WSI does not require external pull-up resistors or debounce circuitry for push-button operation. PU and PD inputs feature internal pull-ups, and all debounce logic is implemented on-chip with a typical 35ms rejection window. Only momentary switches connecting PU or PD to ground are needed. ASE also supports direct push-button connection for manual store, eliminating external logic or microcontroller dependency in standalone applications.

How does AUTOSTORE functionality work on the X9511WSI?

AUTOSTORE on the X9511WSI activates when the ASE pin is held low (≤0.8V). During VCC power-down, the device detects voltage crossing the 4V AUTOSTORE threshold and initiates a 2ms EEPROM store cycle before shutdown. Upon next power-up, the stored wiper position is automatically recalled. If ASE is held high, AUTOSTORE is disabled and manual store is triggered by toggling ASE low-high-low-a single push-button press suffices for field recalibration without tools.

What is the resolution and linearity performance of the X9511WSI?

The X9511WSI offers 32 discrete wiper positions across its 10kΩ end-to-end resistance, yielding ~323Ω per step and 3% resistance resolution. Absolute linearity is ±1.0 MI (minimum increment), and relative linearity is ±0.2 MI-meaning step-to-step variation is tightly controlled. These values are measured across the full -40°C to +85°C range and reflect actual resistor array matching, not interpolated DAC behavior.

Can the X9511WSI be used in circuits with supply voltages other than 5V?

The X9511WSI is specified for VCC = 5V ±10% (4.5V to 5.5V) only. While analog terminals tolerate ±5V independently, the internal logic, EEPROM programming voltage, and counter operation depend strictly on this VCC range. Operation outside 4.5–5.5V risks incomplete AUTOSTORE cycles, erratic wiper movement, or EEPROM corruption. No 3.3V or dual-supply variants exist in the X9511 family.