Renesas X9313WMZ

Overview

X9313WMZ from Intersil is a digitally controlled potentiometer (XDCP™) with 32 linear tap positions, 10 kΩ end-to-end resistance, 3-wire serial interface (CS/U/D/INC), ±VCC terminal voltage range, and nonvolatile wiper position storage. It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming applications such as DC bias adjustment in op-amp circuits and programmable gain control.

For engineers reviewing the X9313WMZ datasheet, X9313WMZ pinout, X9313WMZ application, or X9313WMZ equivalent, key selection criteria include its 10 kΩ RTOTAL value, MSOP-8 package, 0°C to +70°C operating temperature, 3V–5.5V supply compatibility, and nonvolatile recall on power-up-critical for factory-set calibration retention.

Technical Context

The X9313WMZ implements a 31-element resistor array with make-before-break wiper switching, enabling glitch-free tap transitions. Its 5-bit up/down counter drives a decoder that selects one of 32 wiper positions, with wiper resistance typically 40 Ω at VCC = 5 V.

Control logic operates via edge-triggered INC input (negative-edge), level-sensitive U/D direction signal, and CS-selectable store-on-high transition. Nonvolatile memory retains wiper position for ≥100 years and supports ≥100,000 write cycles per bit.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (Pb-free, RoHS compliant), dimensions per JEDEC MO-187-AA (PKG DWG # M8.118), 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 AD5243BRMZ-10 and MCP41010-I/P, the X9313WMZ offers deterministic 3-wire control with guaranteed nonvolatile recall-reducing firmware complexity and eliminating post-power-up calibration steps in resource-constrained embedded systems.

Availability

X9313WMZ is available at Aetrix Electronics and suitable for audio signal conditioning, DC bias trimming, programmable gain amplification, and power supply feedback applications requiring stable component supply, long-term calibration retention, and RoHS-compliant packaging.

Supply support for X9313WMZ 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 semiconductor provider, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure solutions.

The X9313 family was designed specifically for solid-state replacement of mechanical potentiometers in factory-calibrated analog systems-emphasizing nonvolatile setting retention, low wiper resistance, and robust 3-wire interface simplicity.

FAQ

What is the maximum allowable voltage across RH and RL terminals for X9313WMZ?

The X9313WMZ supports |VH − VL| ≤ 10 V under recommended operating conditions, as specified for X9313W-series devices. This limit applies regardless of VCC level and ensures safe operation of the internal resistor array and wiper switches. Exceeding this differential voltage risks irreversible damage to the thin-film resistive elements.

Does X9313WMZ require an external pull-up or pull-down resistor on the INC pin?

No, the X9313WMZ does not require external biasing on the INC pin. Its input leakage current is ±10 µA over temperature, and VIH/VIL thresholds are defined relative to VCC and VSS. A clean CMOS-compatible signal with tIH ≥ 1 µs and tIL ≥ 1 µs meets timing requirements without added components.

Can X9313WMZ operate with a 3.3 V supply while maintaining full 10 kΩ RTOTAL accuracy?

Yes, X9313WMZ is rated for VCC = 3 V to 5.5 V, and its RTOTAL tolerance remains ±20% across this range. The 10 kΩ value is process-trimmed and temperature-compensated; datasheet specifications-including wiper resistance and linearity-are guaranteed at 3 V operation per FN8177 Rev 7.00 Section "Recommended Operating Conditions".

How is the wiper position stored in nonvolatile memory on X9313WMZ?

Wiper position is stored when CS transitions HIGH while INC is held HIGH. This store command initiates a 10 ms internal programming cycle (tWR), after which the device enters standby mode. The stored value persists for ≥100 years and automatically loads to the wiper counter on next power-up, independent of VCC ramp rate or sequencing.

Is the X9313WMZ pinout compatible with other X9313 variants in MSOP-8 packages?

Yes, all X9313 variants in MSOP-8 (e.g., X9313WMZ, X9313WMIZ, X9313UMZ) share identical pinout per Package Outline Drawing M8.118. Pin assignments-VCC, VSS, CS, U/D, INC, RH/VH, RL/VL, RW/VW-are functionally and physically identical across temperature and resistance variants, enabling drop-in substitution where electrical specs align.