Renesas X9317WM8Z-2.7

Overview

X9317WM8Z-2.7 from Renesas Electronics is a low-noise, low-power, 100-tap digitally controlled potentiometer (XDCP™) with nonvolatile wiper position storage, 10 kΩ end-to-end resistance, and 2.7 V to 5.5 V supply operation. It implements a 99-element resistor array with make-before-break wiper switching and operates as either a three-terminal voltage divider or two-terminal variable resistor in precision analog trimming applications.

For engineers reviewing the X9317WM8Z-2.7 datasheet, X9317WM8Z-2.7 pinout, X9317WM8Z-2.7 application, or X9317WM8Z-2.7 equivalent, key selection considerations include its 2.7–5.5 V operating range, ±20% RTOTAL tolerance, 100-year data retention, <5 µA standby current, and MSOP-8 package compatibility with space-constrained analog bias circuits.

Technical Context

The X9317WM8Z-2.7 integrates a 7-bit up/down counter, decoder, nonvolatile memory, and resistor array with 99 series elements. Wiper position is controlled via CS, U/D, and edge-triggered INC inputs using a 3-wire serial interface - no clock or address lines required.

It features temperature-compensated resistance (±300 ppm/°C total coefficient), ratiometric stability (±20 ppm/°C), and wiper resistance of 400 Ω (max) at 2.7 V. The device powers up to the last stored tap position and supports both volatile adjustment and nonvolatile store-on-CS-high-with-INC-high programming.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (M8.118), RoHS-compliant, 3.0 mm × 3.0 mm × 0.85 mm body, 0.65 mm pitch, moisture sensitivity level (MSL) 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5170BRMZ-10 and MCP41HV51-103, the X9317WM8Z-2.7 uniquely combines 100-tap resolution, guaranteed nonvolatile power-up recall, sub-5 µA standby, and ≤400 Ω wiper resistance at 2.7 V - making it optimal for self-contained analog calibration in space- and power-constrained designs.

Availability

X9317WM8Z-2.7 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias adjustment, and voltage regulator output trimming requiring stable component supply, long-term calibration integrity, and MSOP-8 footprint compatibility.

Supply support for X9317WM8Z-2.7 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

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and infrastructure markets.

The X9317WM8Z-2.7 belongs to Renesas' XDCP™ (eXternally Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical trimpots in precision analog calibration, bias control, and programmable gain/offset applications where reliability, nonvolatility, and low-voltage operation are critical.

FAQ

What is the operating voltage range of the X9317WM8Z-2.7?

The X9317WM8Z-2.7 operates from 2.7 V to 5.5 V, supporting both 3.3 V and 5 V systems without external level translation. Its internal CMOS circuitry is fully specified across this range, including parameters like standby current (<5 µA), wiper resistance (≤400 Ω at 2.7 V), and timing (tCYC = 2 µs min). This makes the X9317WM8Z-2.7 suitable for mixed-supply designs and low-power portable equipment where supply headroom is limited.

Does the X9317WM8Z-2.7 retain its wiper position after power cycling?

Yes, the X9317WM8Z-2.7 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is guaranteed for 100 years under normal operating conditions. The store operation occurs when CS transitions high while INC is held high, and the recalled value sets the initial RW voltage before any new INC commands are issued - ensuring deterministic startup in unattended or safety-critical analog subsystems.

How many wiper positions does the X9317WM8Z-2.7 support, and what is their resolution?

The X9317WM8Z-2.7 provides 100 discrete wiper positions (0 to 99), corresponding to 99 resistive elements in its array. Each step represents 1% of the full-scale voltage division range (i.e., (V_RH − V_RL)/99), enabling precise analog trimming. Relative linearity is ±0.2 MI, ensuring minimal step-size deviation - critical for applications like gain calibration where monotonic response is mandatory.

What package type is used for the X9317WM8Z-2.7, and what are its key mechanical dimensions?

The X9317WM8Z-2.7 uses an 8-lead MSOP package (drawing M8.118), measuring 3.0 mm × 3.0 mm × 0.85 mm with 0.65 mm lead pitch. It features gull-wing leads, RoHS compliance, and MSL1 rating. The compact footprint supports high-density PCB layouts in space-constrained applications such as handheld medical devices and optical modules, while maintaining thermal resistance (θ_JA = 145 °C/W) suitable for ambient temperatures up to +70°C.

Can the X9317WM8Z-2.7 be used as both a potentiometer and a rheostat?

Yes, the X9317WM8Z-2.7 functions as either a three-terminal potentiometer (RH–RW–RL) for voltage division or a two-terminal variable resistor (e.g., RH–RW or RW–RL) for current control. Its internal architecture supports both configurations without external component changes. In rheostat mode, RW serves as the adjustable terminal, and RH or RL acts as the fixed terminal - commonly used in laser diode bias and op-amp gain-setting circuits where only one variable resistance element is needed.