Renesas X9314WS-3T2

Overview

X9314WS-3T2 from Intersil is a solid-state, nonvolatile, digitally controlled potentiometer with 32 log-taper taps, 10kΩ end-to-end resistance, and three-wire up/down serial interface; it serves as a precision trim element in analog signal conditioning circuits for audio volume control and sensor offset calibration.

For engineers reviewing the X9314WS-3T2 datasheet, X9314WS-3T2 pinout, X9314WS-3T2 application, or X9314WS-3T2 equivalent, key selection criteria include wiper resistance (40Ω typ), nonvolatile store-and-recall capability, ±5V terminal voltage rating, VCC range (3V to 5.5V), and MSOP-8 package compatibility with space-constrained PCB layouts.

Technical Context

The X9314WS-3T2 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 deterministic tap stepping without wraparound at extremes.

Nonvolatile storage occurs on CS rising edge while INC is HIGH, retaining wiper state for ≥100 years; power-up recalls last stored position, and standby current remains ≤500µA with VCC = 3–5.5V, supporting low-power embedded trimming applications.

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 AD5243BRMZ10 and MCP41010-I/P, the X9314WS-3T2 uniquely combines log taper, nonvolatile storage, and three-wire simplicity-making it optimal for single-channel, perceptual-adjustment applications where power-cycle consistency and minimal GPIO usage are critical.

Availability

X9314WS-3T2 is available at Aetrix Electronics and suitable for audio volume control, sensor offset calibration, power supply trim, and industrial DAC output scaling requiring stable component supply and long-term calibration integrity.

Supply support for X9314WS-3T2 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 X9314WS-3T2 belongs to Intersil's XDCP™ (Digitally Controlled Potentiometer) family, engineered specifically for replacing mechanical trimmers in analog signal path calibration where repeatable, maintenance-free, and space-efficient digital control is required.

FAQ

What is the operating voltage range for the X9314WS-3T2?

The X9314WS-3T2 operates with a supply voltage (VCC) from 3V to 5.5V. Its analog terminals (VH/RH and VL/RL) tolerate ±5V relative to VSS, allowing use in bipolar signal environments without level shifters. This dual-voltage capability makes the X9314WS-3T2 suitable for both 3.3V embedded systems and legacy 5V industrial circuits while maintaining full specification compliance across the range.

Does the X9314WS-3T2 retain its wiper position after power loss?

Yes, the X9314WS-3T2 stores the wiper position in nonvolatile memory upon command and retains it for ≥100 years. A store operation is triggered when CS transitions HIGH while INC is held HIGH. On subsequent power-up, the device automatically recalls that stored value and configures the wiper accordingly-ensuring repeatable startup behavior without MCU intervention. This feature is intrinsic to the X9314WS-3T2 and does not require external memory or initialization code.

What package type is used for the X9314WS-3T2?

The X9314WS-3T2 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. The compact footprint supports high-density PCB layouts where SOIC-8 would be prohibitive.

How does the X9314WS-3T2 implement log taper, and why is it important?

The X9314WS-3T2 achieves log taper through its internal 31-resistor array and decoding logic, delivering 32 tap points with step-size variation approximating a logarithmic curve. This matches human perception of loudness and brightness, making the X9314WS-3T2 ideal for audio volume and display dimming controls-where linear pots cause coarse adjustment at low settings and fine adjustment at high settings. The log response is hardware-defined and requires no firmware compensation.

Can the X9314WS-3T2 be used as a two-terminal variable resistor?

Yes, the X9314WS-3T2 can operate as a two-terminal variable resistor by connecting either VH/RH or VL/RL to VW/RW (wiper), leaving the unused terminal open or grounded depending on configuration. In this mode, resistance varies from ~40Ω (wiper at terminal) to 10kΩ (wiper at opposite end). The 40Ω typical wiper resistance is explicitly specified and stable across temperature, ensuring predictable minimum resistance in gain-setting or current-limiting applications.