Renesas X9314WSIT1

Overview

X9314WSIT1 from Intersil is a nonvolatile digitally controlled potentiometer (XDCP™) with 32 log-taper taps, 10kΩ end-to-end resistance, ±5V terminal voltage rating, and three-wire up/down serial interface - used for precision resistance trimming in analog signal conditioning circuits.

For engineers reviewing the X9314WSIT1 datasheet, X9314WSIT1 pinout, X9314WSIT1 application, or X9314WSIT1 equivalent, this device supports power-up wiper recall, <500µA standby current, 40Ω typical wiper resistance, and operates from 3V to 5.5V - critical for low-power embedded trim and calibration designs.

Technical Context

The X9314WSIT1 implements a 5-bit up/down counter driving a 31-element resistor array with make-before-break electronic switches; wiper position is decoded to select one of 32 tap points between VH/RH and VL/RL terminals.

Nonvolatile storage is triggered by CS HIGH while INC is HIGH, retaining wiper position for ≥100 years; operation requires no VCC sequencing constraints, and wiper movement is bounded - no wraparound at extremes.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (M8.118), RoHS-compliant, Pb-free plus anneal finish, 3.0mm × 3.0mm body, 0.65mm pitch.

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 X9314WSIT1 uniquely combines log taper, nonvolatile recall, and ultra-low standby current in an MSOP package - making it optimal for self-calibrating, battery-aware analog trim where perceptual linearity matters.

Availability

X9314WSIT1 is available at Aetrix Electronics and suitable for audio volume control, DC offset calibration, laser diode bias trim, and programmable gain amplifier applications requiring stable component supply and long-term calibration integrity.

Supply support for X9314WSIT1 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 X9314WSIT1 belongs to Intersil's XDCP™ family of nonvolatile digital potentiometers, engineered specifically for robust, maintenance-free resistance trimming in industrial, medical, and communications equipment.

FAQ

What is the operating voltage range for the X9314WSIT1?

The X9314WSIT1 operates from 3V to 5.5V on VCC, supporting both 3.3V and 5V logic systems. Its VH/RH and VL/RL terminals tolerate ±5V relative to VSS, enabling use in bipolar analog signal paths without level-shifting circuitry. This dual-voltage capability makes the X9314WSIT1 suitable for mixed-signal designs where digital control and analog signal integrity must coexist.

Does the X9314WSIT1 retain its wiper position after power loss?

Yes, the X9314WSIT1 stores wiper position in nonvolatile memory with 100-year data retention. A store operation is triggered when CS transitions HIGH while INC is HIGH. Upon subsequent power-up, the stored value is automatically recalled, restoring the last calibrated resistance setting - eliminating manual re-trim or firmware initialization overhead in the X9314WSIT1.

What is the taper type and why does it matter for the X9314WSIT1?

The X9314WSIT1 features a logarithmic (log) taper, meaning resistance changes between taps follow a log curve rather than linear progression. This matches human auditory and visual perception, enabling smooth, natural-feeling adjustments in volume controls and dimmer circuits. Unlike linear-taper DCPs, the X9314WSIT1 avoids abrupt low-level steps that would degrade user experience in audio or lighting applications.

Can the X9314WSIT1 be used as a two-terminal variable resistor?

Yes, the X9314WSIT1 can operate as a two-terminal variable resistor by connecting either VH/RH or VL/RL to VW/RW and using the remaining terminal with the wiper. In this mode, it replaces mechanical trimmers in gain-setting or bias-adjustment circuits. The 40Ω typical wiper resistance and 10kΩ total resistance ensure minimal loading error - a key design advantage of the X9314WSIT1 in precision analog stages.

What package type is used for the X9314WSIT1 and what are its key mechanical features?

The X9314WSIT1 uses an 8-lead MSOP package (JEDEC MO-187-AA compliant, pkg drawing M8.118), measuring 3.0mm × 3.0mm with 0.65mm lead pitch. It features Pb-free plus anneal termination for RoHS compliance and compatibility with both SnPb and lead-free reflow profiles. This compact, surface-mount package supports high-density PCB layouts while maintaining thermal and electrical performance required for the X9314WSIT1's analog precision role.