Renesas X9313WM-3T1

Overview

X9313WM-3T1 from Intersil is a digitally controlled potentiometer (XDCP™) with 32 linear tap positions, 3-wire serial interface (CS/U/D/INC), nonvolatile wiper position storage, and 10 kΩ end-to-end resistance. It operates from 3V to 5.5V, supports terminal voltages from –VCC to +VCC, and is used for precision analog trimming in voltage divider and variable resistor configurations.

For engineers reviewing the X9313WM-3T1 datasheet, X9313WM-3T1 pinout, X9313WM-3T1 application, or X9313WM-3T1 equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in signal conditioning and power regulation, and confirmed alternative options for design continuity.

Technical Context

The X9313WM-3T1 implements a 31-element resistor array with electronically switched wiper access at 32 discrete taps. Wiper position is controlled by an up/down counter decoded to select one of thirty-two output nodes, with "make-before-break" switching to prevent open-circuit transients during movement.

Nonvolatile memory stores the last wiper position on CS↑ while INC is HIGH, enabling automatic recall at power-up. The device supports both three-terminal potentiometer and two-terminal variable resistor topologies, with wiper resistance ≤100 Ω at VCC = 5V and ±4.4 mA max wiper current.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (Pb-free, RoHS compliant), dimensions per JEDEC MO-187-AA, body size 3.0 mm × 3.0 mm × 0.85 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9313WM-3T1, AD5243BRMZ10 offers higher resolution and dual channels but sacrifices guaranteed power-up position recall and adds bus protocol overhead; MCP4018T-103I/OT reduces footprint and cost but shifts wiper initialization burden to firmware and removes long-term retention capability.

Availability

X9313WM-3T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply trimming, and embedded audio level control requiring stable component supply and long-term parameter retention.

Supply support for X9313WM-3T1 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 is a precision analog and power management solutions provider, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure ICs.

The X9313 family was designed for solid-state replacement of mechanical potentiometers in analog signal path trimming, emphasizing nonvolatile retention, wide supply range, and robust interface simplicity.

FAQ

What is the operating temperature range for the X9313WM-3T1?

The X9313WM-3T1 is rated for 0°C to +70°C commercial operation, as indicated by the "W" suffix in the ordering code and confirmed in the Ordering Information table on page 2 of FN8177 Rev 7.00. This range applies to all electrical specifications unless otherwise noted, and the device uses temperature-compensated resistor elements to maintain linearity and TC performance across this span.

Does the X9313WM-3T1 require external pull-up resistors on its control pins?

No, the X9313WM-3T1 does not require external pull-ups on CS, U/D, or INC. Its input leakage current is ±10 µA maximum, and VIH/VIL thresholds are defined relative to VCC (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 5V), allowing direct connection to CMOS logic outputs. Internal weak pull-downs are not present, so host MCU GPIOs must drive defined logic levels.

Can the X9313WM-3T1 be used with bipolar supplies such as ±5V?

Yes-the X9313WM-3T1 supports terminal voltages from –VCC to +VCC, and with VCC = 5V, RH/VH and RL/VL may swing from –5V to +5V. This enables direct use in bipolar op-amp circuits or AC-coupled signal paths without level-shifting components, provided the absolute voltage on any terminal stays within –6V to +7V per Absolute Maximum Ratings.

How is wiper position stored and recalled in the X9313WM-3T1?

Wiper position is stored in nonvolatile memory when CS transitions HIGH while INC is held HIGH; the stored value is automatically loaded to the wiper counter on power-up. This behavior is intrinsic to the X9313WM-3T1 architecture and requires no external EEPROM or configuration registers-making it ideal for maintenance-free calibration in unattended equipment.

What is the maximum allowable voltage difference between RH/VH and RL/VL terminals on the X9313WM-3T1?

For the X9313WM-3T1 (a "W" grade variant), the maximum voltage difference ΔV = |VH – VL| is 10 V, as specified in the Recommended Operating Conditions table on page 5 of FN8177 Rev 7.00. Exceeding this limit risks exceeding the device's power rating or violating safe operating area, especially at higher RTOTAL values where power dissipation scales with V²/RTOTAL.