Renesas X9314WSIT2

Overview

X9314WSIT2 from Intersil is a nonvolatile digitally controlled potentiometer (XDCP™) with 32 log-taper taps, 10kΩ end-to-end resistance, and three-wire up/down serial interface; it functions as a solid-state trimmer in analog signal conditioning circuits requiring power-up wiper recall and ±5V terminal voltage tolerance.

For engineers reviewing the X9314WSIT2 datasheet, X9314WSIT2 pinout, X9314WSIT2 application, or X9314WSIT2 equivalent, this device supports precision resistance trimming in embedded control loops, audio gain staging, sensor offset calibration, and DC bias adjustment where nonvolatile position retention and low wiper resistance (40Ω typ.) are critical design requirements.

Technical Context

The X9314WSIT2 implements a 5-bit up/down counter driving a 31-element resistor array with make-before-break electronic switches; wiper position is selected via CS, U/D, and edge-triggered INC inputs, enabling discrete tap selection without microcontroller firmware overhead.

Nonvolatile storage occurs on CS rising edge while INC is HIGH, retaining wiper state for ≥100 years; operation spans 3V to 5.5V supply, -40°C to +85°C, with ±1mA wiper current limit and ratiometric temperature coefficient of ±20 ppm/°C - ensuring stable attenuation across thermal drift.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (M8.118), RoHS-compliant, Pb-free plus anneal finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5170BRMZ-10 and MCP41010-I/P, the X9314WSIT2 offers log taper and true power-up recall without firmware intervention, making it optimal for audio and self-contained analog trim where simplicity and perceptual linearity outweigh tap-count density.

Availability

X9314WSIT2 is available at Aetrix Electronics and suitable for audio volume control, sensor offset calibration, DC bias adjustment, and embedded system trim requiring stable component supply and long-term reliability in industrial and commercial environments.

Supply support for X9314WSIT2 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 X9314WSIT2 belongs to Intersil's XDCP™ family of nonvolatile digital potentiometers, engineered for replacement of mechanical trimmers in applications demanding repeatable, maintenance-free resistance adjustment.

FAQ

What is the operating voltage range for the X9314WSIT2?

The X9314WSIT2 operates from 3V to 5.5V on VCC, with terminal voltage ratings of ±5V on VH/RH and VL/RL relative to VSS. This allows direct use in both 3.3V and 5V systems and supports bipolar analog signals without external level-shifting circuitry. The device remains functional across the full industrial temperature range (-40°C to +85°C) under these supply conditions.

Does the X9314WSIT2 retain its wiper position after power cycling?

Yes, the X9314WSIT2 stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. Storage occurs when CS transitions HIGH while INC is held HIGH; the stored value persists for ≥100 years. This eliminates startup recalibration routines and ensures consistent behavior across unattended deployments - a key advantage over volatile digital potentiometers like the MCP41010-I/P.

What is the taper type and why does it matter for the X9314WSIT2?

The X9314WSIT2 features a logarithmic (log) taper across its 32 taps, meaning resistance changes per step follow a dB-like progression. This matches human auditory and visual perception, making it ideal for volume and brightness controls where small adjustments at low settings feel proportional. Linear-taper alternatives such as the AD5170BRMZ-10 require additional firmware mapping to achieve similar perceptual linearity.

How is the wiper position controlled on the X9314WSIT2?

The X9314WSIT2 uses a three-wire up/down serial interface: CS (chip select), U/D (direction), and INC (increment clock). With CS LOW, each negative edge on INC moves the wiper one tap in the direction set by U/D. No clock or data lines are required, simplifying integration with minimal GPIO resources. The interface is fully asynchronous and tolerant of slow or irregular pulse timing within datasheet limits.

What package type is used for the X9314WSIT2 and what are its key mechanical features?

The X9314WSIT2 is supplied in an 8-lead MSOP package (JEDEC MO-187-AA compliant, outline M8.118), measuring 3.0mm × 3.0mm × 0.85mm. It features Pb-free plus anneal termination for RoHS compliance and compatibility with both SnPb and lead-free reflow profiles. The narrow body and exposed pad-free design supports standard SMT placement and automated optical inspection without special tooling.