Renesas X9511WSIT1

Overview

X9511WSIT1 from Intersil is a push-button controlled digital potentiometer (XDCP™) with 32 linear tap positions, ±5V terminal voltage range, 10kΩ end-to-end resistance, nonvolatile EEPROM wiper position storage, and SOIC-8 packaging. It replaces mechanical potentiometers in analog trimming applications requiring power-up recall and manual or automatic store functionality.

For engineers reviewing the X9511WSIT1 datasheet, X9511WSIT1 pinout, X9511WSIT1 application, or X9511WSIT1 equivalent, this device supports precision resistance adjustment in battery-powered instrumentation, industrial sensor calibration, and audio level control where low standby current (100µA typical), push-button interface simplicity, and 100-year data retention are critical selection criteria.

Technical Context

The X9511WSIT1 integrates a 5-bit up/down counter, 32-position decoder, 31-element resistor array, and EEPROM memory with AUTOSTORE® logic. Wiper position is updated via debounced PU/PD inputs and stored either automatically on VCC drop (ASE = LOW) or manually via ASE pulse.

Its analog performance includes ±20% end-to-end resistance tolerance, ±1.0 MI absolute linearity, ±0.2 MI relative linearity, +300 ppm/°C temperature coefficient, and < –120 dB/√Hz noise - all specified over –40°C to +85°C for industrial-grade operation.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (MDP0027), RoHS-compliant, Pb-free with matte tin finish, rated MSL1 at peak reflow ≤260°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5241BRMZ10 and MCP4017T-103, the X9511WSIT1 uniquely delivers true push-button autonomy, guaranteed power-up recall, and bipolar voltage handling - eliminating MCU dependency and external memory while supporting analog signal paths beyond unidirectional 0–5V ranges.

Availability

X9511WSIT1 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical instrumentation trim, programmable power supply setpoint adjustment, and audio volume control requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.

Supply support for X9511WSIT1 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 analog and mixed-signal semiconductor company specializing in precision analog ICs, power management, and interface solutions.

The X9511WSIT1 belongs to Intersil's XDCP™ (eXternally Controlled Digital Potentiometer) family, designed specifically for mechanical potentiometer replacement in analog trimming applications where reliability, nonvolatility, and human-interface simplicity are prioritized over serial communication.

FAQ

What is the operating temperature range for the X9511WSIT1?

The X9511WSIT1 is rated for industrial operation from –40°C to +85°C. This range is confirmed in the "Recommended Operating Conditions" table on page 6 of the FN8205 Rev 3.00 datasheet and applies to all electrical specifications including linearity, resistance tolerance, and debounce timing. The SOIC-8 package (MDP0027) is qualified across this full range, making the X9511WSIT1 suitable for deployment in harsh environments such as factory automation controllers and outdoor sensor nodes.

Does the X9511WSIT1 require an external microcontroller to function?

No, the X9511WSIT1 operates autonomously without any microcontroller. Its push-button interface (PU, PD, ASE) directly controls wiper movement and EEPROM storage using on-chip logic, debounce circuitry, and a 5-bit counter. The X9511WSIT1 only requires two momentary switches and optional RC filtering - no firmware, clock source, or serial bus is needed, distinguishing it from I²C- or SPI-based digital potentiometers.

How does AUTOSTORE® work on the X9511WSIT1?

AUTOSTORE® on the X9511WSIT1 activates when the ASE pin is held LOW. During VCC power-down, the device detects the falling threshold (VASTH = 4V) 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, manual store is triggered by a LOW-to-HIGH edge - enabling user-initiated saves without automatic behavior.

What is the maximum wiper current rating for the X9511WSIT1?

The X9511WSIT1 has a maximum wiper current rating of ±1mA, as specified in the "Absolute Maximum Ratings" table on page 5 of the datasheet. This limit applies regardless of terminal voltage (–5V to +5V) and must be observed to prevent degradation of the 31-element resistor array or wiper switch contacts. Exceeding ±1mA may cause irreversible resistance drift or open-circuit failure in the wiper path.

Can the X9511WSIT1 be used in bipolar signal paths?

Yes, the X9511WSIT1 supports true bipolar operation with VH and VL terminals rated from –5V to +5V referenced to VSS. Unlike many digital potentiometers limited to 0–VCC ranges, the X9511WSIT1's CMOS transfer gates and resistor array are designed for bidirectional voltage swing - enabling direct use in op-amp inverting amplifiers, AC-coupled filters, and differential signal conditioning without external level-shifting circuitry.