Renesas X9317US8IT1

Overview

X9317US8IT1 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 discrete wiper tap positions, nonvolatile wiper position storage, and 3-wire up/down serial interface. It functions as a solid-state three-terminal voltage divider or two-terminal variable resistor for precision analog trimming in DC-biased circuits.

For engineers reviewing the X9317US8IT1 datasheet, X9317US8IT1 pinout, X9317US8IT1 application, or X9317US8IT1 equivalent, this device supports stable bias control in LCDs, laser diode drivers, and voltage regulator feedback loops - with verified 50 kΩ end-to-end resistance, ±20% tolerance, -40°C to +85°C operation, and <5 µA standby current.

Technical Context

The X9317US8IT1 integrates a 7-bit up/down counter, decoder, wiper switching network, and nonvolatile memory to control wiper position across 100 taps. Its resistor array is temperature-compensated with ±300 ppm/°C total resistance TC and ±20 ppm/°C ratiometric TC.

Control uses edge-triggered INC, level-sensitive U/D, and active-low CS signals. Wiper movement follows "make-before-break" switching, and nonvolatile store occurs on CS↑ with INC HIGH - enabling power-up recall of last stored setting without external configuration.

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 MCP45HV51-503, the X9317US8IT1 offers simpler 3-wire up/down control, lower standby current (<5 µA vs. ≥10 µA), and guaranteed -40°C to +85°C operation - making it optimal for cost-sensitive, low-power industrial trimming where minimal GPIO count matters.

Availability

X9317US8IT1 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 retention, and industrial temperature resilience.

Supply support for X9317US8IT1 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 X9317US8IT1 belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimpots in precision analog trimming applications requiring nonvolatile setting retention and robust industrial operation.

FAQ

What is the supply voltage range supported by the X9317US8IT1?

The X9317US8IT1 operates from 2.7 V to 5.5 V, covering both 3.3 V and 5 V system rails. This wide range allows direct integration into mixed-voltage designs without level-shifting, and its performance specifications - including wiper resistance and linearity - are guaranteed across the full range and over the -40°C to +85°C temperature span.

Does the X9317US8IT1 retain its wiper position after power cycling?

Yes, the X9317US8IT1 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. The store operation is triggered by raising CS while INC is held HIGH, and data retention is rated for 100 years - ensuring factory calibration remains intact throughout product lifetime without external backup power or EEPROM writes.

How many wiper positions does the X9317US8IT1 provide, and what is its resolution?

The X9317US8IT1 provides exactly 100 discrete wiper tap positions across its 99-resistor array, yielding 1% resolution per step. This resolution is defined as the minimum increment (MI) = (V_RH – V_RL)/99, and relative linearity is specified at ±0.2 MI - confirming consistent step accuracy for reliable gain or offset trimming.

What package type and footprint does the X9317US8IT1 use?

The X9317US8IT1 uses an 8-lead narrow-body SOIC package (JEDEC MS-012, drawing M8.15E) with 1.27 mm lead pitch and RoHS-compliant matte tin plating. Its footprint matches standard SOIC-8 land patterns, and thermal resistance is θ_JA = 115°C/W - enabling use in compact industrial PCBs without forced airflow.

Can the X9317US8IT1 be used as both a three-terminal potentiometer and a two-terminal rheostat?

Yes, the X9317US8IT1 supports both configurations: as a three-terminal potentiometer (RH–RW–RL) for voltage division, and as a two-terminal variable resistor (e.g., RH–RW or RW–RL) for current control. Its datasheet confirms functional equivalence to mechanical potentiometers in either mode, with verified noise performance (-120 dBV) and wiper current rating (±4.4 mA).