Renesas X9317ZV8-2.7

Overview

X9317ZV8-2.7 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100 wiper tap points, nonvolatile wiper position storage, and 2.7V to 5.5V supply operation. It implements a 99-element resistor array with temperature-compensated end-to-end resistance tolerance of ±20%, wiper resistance ≤400Ω at 2.7V, and standby current <5µA. It serves as a three-terminal voltage divider or two-terminal variable resistor in precision analog trim applications.

For engineers reviewing the X9317ZV8-2.7 datasheet, X9317ZV8-2.7 pinout, X9317ZV8-2.7 application, or X9317ZV8-2.7 equivalent, key selection considerations include its 3-wire up/down interface timing (tCYC = 2µs), ratiometric temperature coefficient (±20 ppm/°C), noise performance (-120 dBV @ 1kHz), absolute linearity (±1 MI), and MSOP-8 package compatibility with space-constrained industrial control and sensor signal conditioning designs.

Technical Context

The X9317ZV8-2.7 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 99 resistive elements. Its "make-before-break" switching ensures continuity during tap transitions, while the CS/U/D/INC interface enables deterministic wiper movement without clock or data framing overhead.

It operates as a solid-state replacement for mechanical potentiometers, supporting both voltage-divider (RH–RW–RL) and variable-resistor (RW–RL or RW–RH) configurations. The device recalls stored wiper position on power-up and retains data for 100 years, with 100,000 write cycles per bit - critical for calibration-critical systems requiring long-term setting stability.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (Moisture Sensitivity Level 1, RoHS-compliant, JEDEC MO-187-AA compliant, body dimensions 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 AD5170BRMZ-10 and MCP41010-I/P, the X9317ZV8-2.7 delivers guaranteed power-up repeatability without host intervention, deterministic GPIO-level control timing, and lower system-level BOM count due to integrated nonvolatile memory - making it optimal for unattended calibration and safety-critical analog trimming.

Availability

X9317ZV8-2.7 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias adjustment, and voltage regulator output trimming requiring stable component supply across industrial temperature ranges and long product lifecycles.

Supply support for X9317ZV8-2.7 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 delivering high-performance, reliable microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.

The X9317 family is designed specifically for precision analog trimming in space- and power-constrained systems, emphasizing nonvolatile setting retention, low-noise operation, and robustness across extended temperature ranges.

FAQ

What is the operating temperature range for the X9317ZV8-2.7?

The X9317ZV8-2.7 is rated for commercial operation from 0°C to +70°C. Its specifications - including end-to-end resistance tolerance, ratiometric temperature coefficient, and wiper resistance - are guaranteed across this range. The device uses the same silicon die and internal architecture as industrial-grade variants (e.g., X9317WM8IZ-2.7), but undergoes screening and testing specific to the 0°C to +70°C envelope.

Does the X9317ZV8-2.7 require external pull-up or pull-down resistors on its control pins?

No, the X9317ZV8-2.7 does not require external pull-up or pull-down resistors on CS, U/D, or INC. Its input leakage current is specified at ±10 µA, and VIH/VIL thresholds are defined relative to VCC (VIH ≥ 0.7×VCC, VIL ≤ 0.1×VCC). Microcontroller GPIOs configured with standard push-pull outputs meet these requirements directly, eliminating external components in typical implementations.

How is nonvolatile storage triggered on the X9317ZV8-2.7?

Nonvolatile storage on the X9317ZV8-2.7 is triggered by a rising edge on the CS pin while the INC pin is held HIGH. This sequence writes the current wiper position to EEPROM. The operation takes 5–10 ms to complete, during which the device enters standby mode. No additional commands or timing sequences are required - the action is fully hardware-controlled and deterministic.

Can the X9317ZV8-2.7 be used in a two-terminal variable resistor configuration?

Yes, the X9317ZV8-2.7 supports two-terminal operation by connecting either RH or RL to RW and using the remaining terminal plus RW as the variable resistance element. In this mode, the effective resistance ranges from near-zero (wiper at terminal) to RTOTAL (wiper at opposite end), with wiper resistance contributing directly to total on-resistance - a key design consideration for current-sensing or gain-setting applications.

What is the maximum allowable voltage across RH and RL terminals of the X9317ZV8-2.7?

The absolute maximum voltage across RH and RL is limited to +6 V, as specified in the Absolute Maximum Ratings table. However, for reliable operation within datasheet parameters, the voltage difference must remain within the supply rails: VRH/RL must stay between VSS and VCC. Exceeding VCC at RH or going below VSS at RL risks latch-up or parametric degradation, even if within the ±6 V absolute limit.