Renesas X9317US8-2.7T1

Overview

X9317US8-2.7T1 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100 wiper tap points, nonvolatile wiper position storage, and 50 kΩ end-to-end resistance. It operates from 2.7 V to 5.5 V, consumes <5 µA in standby, and uses a 3-wire up/down interface for voltage divider or variable resistor applications in precision analog trimming.

For engineers reviewing the X9317US8-2.7T1 datasheet, X9317US8-2.7T1 pinout, X9317US8-2.7T1 application, or X9317US8-2.7T1 equivalent, this device supports DC bias adjustment, laser diode bias control, gain/offset trim, and voltage regulator output tuning - all requiring stable wiper position retention across power cycles and low-noise analog performance.

Technical Context

The X9317US8-2.7T1 implements a 99-element resistor array with make-before-break wiper switching, enabling glitch-free tap transitions. Its 7-bit counter drives a decoder that selects one of 100 wiper positions, with nonvolatile memory storing the last position for automatic recall at power-up.

Control logic responds to CS (chip select), U/D (direction), and edge-triggered INC inputs. The device supports both three-terminal potentiometer (RH–RW–RL) and two-terminal variable resistor (RW–RL or RW–RH) configurations, with temperature-compensated resistance and ±20% RTOTAL tolerance.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (M8.15E), RoHS-compliant, narrow-body plastic package with 1.27 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5175BRMZ-50 and MCP41050-I/P, the X9317US8-2.7T1 uniquely combines 3-wire simplicity, guaranteed nonvolatile recall, and tight ratiometric temperature stability - making it optimal for analog trimming where deterministic startup behavior and minimal MCU resource usage are critical.

Availability

X9317US8-2.7T1 is available at Aetrix Electronics and suitable for LCD bias control, laser diode biasing, voltage regulator tuning, and precision DC offset adjustment requiring stable component supply across industrial temperature ranges and long product lifecycles.

Supply support for X9317US8-2.7T1 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 delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT applications.

The X9317US8-2.7T1 belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in high-reliability analog signal conditioning and power management circuits.

FAQ

What is the operating voltage range for the X9317US8-2.7T1?

The X9317US8-2.7T1 operates from 2.7 V to 5.5 V, supporting single-supply systems including 3.3 V and 5 V rails. This extended low-voltage capability allows direct integration with modern low-power MCUs and battery-operated devices without external level-shifting circuitry. The "-2.7" suffix explicitly denotes this minimum VCC rating, distinguishing it from standard 4.5–5.5 V variants.

Does the X9317US8-2.7T1 retain its wiper position after power loss?

Yes, the X9317US8-2.7T1 stores the last wiper position in nonvolatile memory and automatically recalls it upon power-up. This feature eliminates manual recalibration and ensures repeatable analog settings across power cycles - essential for applications like voltage regulator output tuning or LCD bias control where consistent startup behavior is required.

How many wiper positions does the X9317US8-2.7T1 support?

The X9317US8-2.7T1 provides 100 discrete wiper tap points (0 through 99), corresponding to 1% resolution steps across its 50 kΩ end-to-end resistance. This resolution enables precise analog adjustments in applications such as gain/offset trim and laser diode current control, where fine-grained control directly impacts system accuracy and performance.

What package type is used for the X9317US8-2.7T1?

The X9317US8-2.7T1 is housed in an 8-lead narrow-body SOIC package (JEDEC MS-012, drawing M8.15E), with 1.27 mm lead pitch and RoHS-compliant matte tin terminations. This industry-standard package ensures compatibility with automated assembly processes and offers thermal performance suitable for industrial ambient temperatures up to +85°C.

Can the X9317US8-2.7T1 be used as a two-terminal variable resistor?

Yes, the X9317US8-2.7T1 can operate as a two-terminal variable resistor by connecting either RH or RL to RW and using the remaining terminal with RW. This configuration is commonly used for current control in laser diode bias circuits or programmable load resistors. The device's make-before-break switching prevents open-circuit transients during wiper movement, ensuring safe operation in sensitive analog paths.