Renesas X9317ZV8I-2.7T2

Overview

X9317ZV8I-2.7T2 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 X9317ZV8I-2.7T2 datasheet, X9317ZV8I-2.7T2 pinout, X9317ZV8I-2.7T2 application, or X9317ZV8I-2.7T2 equivalent, key selection criteria include its 3-wire up/down interface timing (tCYC = 2µs), ratiometric temperature coefficient (±20 ppm/°C), noise performance (-120 dBV ref 1kHz), absolute linearity (±1 MI), and TSSOP-8 package compatibility with industrial -40°C to +85°C operation.

Technical Context

The X9317ZV8I-2.7T2 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 CS-triggered nonvolatile store enables power-up recall of last-set position.

It operates with VCC = 2.7V–5.5V and supports three functional configurations: three-terminal potentiometer (RH–RW–RL), two-terminal variable resistor (RW–RH or RW–RL), and buffered reference divider. The device exhibits ratiometric tracking (±20 ppm/°C) and low 1/f noise (-120 dBV), critical for DC bias and gain-trim stability.

Key Specifications

Pinout & Package

Package: 8-lead TSSOP (RoHS-compliant, JEDEC MO-153 AC, M8.173 drawing), footprint-compatible with industry-standard 3.0mm × 4.4mm land pattern, 0.65mm lead pitch, and 1.20mm max height.

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 X9317ZV8I-2.7T2 uniquely combines 3-wire simplicity, guaranteed nonvolatile recall, ±20 ppm/°C ratiometric tracking, and sub-5µA standby-making it optimal for self-contained, low-power, temperature-stable analog trimming without host processor intervention.

Availability

X9317ZV8I-2.7T2 is available at Aetrix Electronics and suitable for LCD bias control, laser diode biasing, voltage regulator trimming, and industrial sensor calibration requiring stable component supply across extended temperature ranges.

Supply support for X9317ZV8I-2.7T2 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 X9317 family was designed specifically for high-reliability, low-power analog trimming in space-constrained industrial and communications equipment-emphasizing nonvolatile retention, temperature stability, and minimal interface overhead.

FAQ

What is the operating temperature range for the X9317ZV8I-2.7T2?

The X9317ZV8I-2.7T2 is rated for industrial operation from -40°C to +85°C. This range is confirmed in the Ordering Information table (Page 2) and applies to all electrical specifications unless otherwise noted. The device uses temperature-compensated resistor elements and maintains ratiometric tracking (±20 ppm/°C) across this full span, making it suitable for harsh-environment deployments where thermal drift must be minimized. X9317ZV8I-2.7T2 performance remains within datasheet limits without derating.

Does the X9317ZV8I-2.7T2 retain its wiper position after power loss?

Yes, the X9317ZV8I-2.7T2 stores the wiper position in nonvolatile memory with 100-year data retention and 100,000 write cycles. When CS transitions HIGH while INC is HIGH, the current counter value is written to memory. On subsequent power-up, the stored value is automatically recalled to set the wiper position-no external controller or initialization sequence is required. This behavior is fundamental to the X9317ZV8I-2.7T2's role in self-calibrating analog systems.

What is the maximum wiper current rating for the X9317ZV8I-2.7T2 at 2.7V supply?

At VCC = 2.7V, the X9317ZV8I-2.7T2 supports a maximum wiper current (IW) of ±4.4mA, as specified in the Absolute Maximum Ratings table (Page 4). This limit applies regardless of tap position and ensures safe operation of the internal switches and resistor elements. Exceeding ±4.4mA risks irreversible damage. For current-sense applications, users must verify that (V(RH) − V(RL)) / RTOTAL stays within this bound-e.g., with 10kΩ total resistance, max differential voltage is 44V, but practical designs typically constrain RH–RL to ≤5.5V.

Can the X9317ZV8I-2.7T2 be used in a two-terminal variable resistor configuration?

Yes, the X9317ZV8I-2.7T2 supports two-terminal operation by connecting either RH or RL to RW (leaving the other fixed terminal unconnected or grounded), effectively creating an adjustable resistor between RW and the chosen terminal. This mode is explicitly supported in the Applications section (Page 1) and Figure 4. Designers must account for wiper resistance (≤400Ω at 2.7V) as part of the total resistance and ensure current stays within ±4.4mA. The X9317ZV8I-2.7T2's make-before-break switching prevents open-circuit faults during adjustment.

What package type does the X9317ZV8I-2.7T2 use, and is it RoHS-compliant?

The X9317ZV8I-2.7T2 uses an 8-lead TSSOP package (JEDEC MO-153 AC, drawing M8.173), with dimensions 3.0mm × 4.4mm and 0.65mm lead pitch. It is Pb-free and RoHS-compliant, as stated in the Ordering Information (Page 2) and Package Outline Drawings (Page 12). The device employs 100% matte tin plating (e3 termination finish) and meets IPC/JEDEC J-STD-020 reflow requirements for both SnPb and Pb-free soldering processes.