Renesas X9313ZP

Overview

X9313ZP from Intersil is a digitally controlled potentiometer (XDCP™) with 32 linear tap positions, 3-wire serial interface (CS/U/D/INC), nonvolatile wiper position storage, and 1kΩ end-to-end resistance. It operates from 3V to 5.5V, supports terminal voltages from –VCC to +VCC, and is used for precision analog trimming in voltage reference and op-amp gain adjustment circuits.

For engineers reviewing the X9313ZP datasheet, X9313ZP pinout, X9313ZP application, or X9313ZP equivalent, key selection criteria include its ±20% RTOTAL tolerance, 40Ω typical wiper resistance at 5V, 100,000-cycle endurance, 100-year data retention, and compatibility with industrial temperature range (–40°C to +85°C) in 8-lead SOIC packaging.

Technical Context

The X9313ZP implements a 31-element resistor array with make-before-break wiper switching, enabling glitch-free tap transitions. Its 5-bit up/down counter drives a decoder that selects one of 32 wiper positions, with direction controlled by U/D and step triggered by negative-edge INC while CS is low.

Wiper position is stored into nonvolatile memory when CS rises while INC is high, ensuring automatic recall on power-up. The device supports both three-terminal potentiometer and two-terminal variable resistor configurations, with terminal voltage ratings spanning –VCC to +VCC and absolute linearity error limited to ±1 MI.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (Pb-free, RoHS compliant), body width 3.9mm, standard JEDEC MS-012-AA footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ10 and MCP41010-I/P, the X9313ZP uniquely combines nonvolatile storage, 3-wire simplicity, and 1kΩ low-value resistance-making it optimal for self-initializing analog calibration in space-constrained industrial controllers where EEPROM integration and minimal GPIO use are critical.

Availability

X9313ZP is available at Aetrix Electronics and suitable for voltage reference trimming, op-amp gain adjustment, and comparator hysteresis setting requiring stable component supply, long-term calibration integrity, and industrial temperature operation.

Supply support for X9313ZP 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

Intersil Corporation is a precision analog and power management semiconductor provider, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure solutions.

The X9313 family was designed for embedded analog trimming applications demanding nonvolatile setting retention, low-power operation, and robustness across extended temperature ranges-targeting power supplies, test equipment, and sensor interfaces.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313ZP?

The X9313ZP specifies ΔV = |VH – VL| ≤ 4V for the X9313Z variant. This limit ensures safe operation of the internal resistor array and switching elements. Exceeding 4V risks irreversible damage to the wiper network or resistive elements, even if individual terminal voltages remain within –VCC to +VCC bounds. Always verify voltage differential in your circuit layout before final design sign-off.

Does X9313ZP require external pull-up resistors on CS, U/D, or INC pins?

No, the X9313ZP does not require external pull-up resistors on CS, U/D, or INC inputs. These pins have CMOS-compatible input thresholds (VIL ≤ 0.8V, VIH ≥ 2V) and leakage current ≤ ±10µA, allowing direct connection to microcontroller GPIOs. However, floating inputs must be avoided-tie unused control lines to VCC or VSS via 10kΩ resistors if not actively driven.

Can X9313ZP be used in a 3.3V system with 5V signals on RH/VH or RL/VL?

No. While the X9313ZP supports VCC = 3V to 5.5V, its terminal voltage rating is –VCC to +VCC. With VCC = 3.3V, RH/VH and RL/VL must stay within –3.3V to +3.3V. Applying 5V signals violates absolute maximum ratings and may cause latch-up or permanent failure. Use level-shifting buffers or select a higher-VCC variant like X9313W (10V ΔV rating) if 5V analog signals are required.

How long does it take for X9313ZP to stabilize its wiper position after power-up?

The X9313ZP achieves wiper stability within 10µs after VCC reaches its final value (tPU specification). During this time, the internal nonvolatile memory is read and the wiper is positioned accordingly. Ensure VCC ramp rate stays within 0.2–50 V/ms (per datasheet tR_VCC) and that CS/INC are held high until stabilization completes to prevent spurious store or move commands.

Is the wiper resistance of X9313ZP constant across all tap positions?

No. The X9313ZP wiper resistance varies slightly with position due to internal switch geometry and contact resistance, but remains bounded: 40Ω typical and ≤100Ω maximum at VCC = 5V. This variation introduces negligible error (<0.1%) in 1kΩ total resistance applications. For critical low-resistance paths, place the wiper near RH/VH or RL/VL terminals where series resistance is minimized.