Renesas X9313ZSIZ-3

Overview

X9313ZSIZ-3 from Intersil is a digitally controlled potentiometer (XDCP™) with 32 linear tap positions, 1kΩ end-to-end resistance, -40°C to +85°C industrial temperature range, and 3-wire serial interface (CS/U/D/INC). It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming circuits requiring nonvolatile wiper position storage and ±VCC terminal voltage tolerance.

For engineers reviewing the X9313ZSIZ-3 datasheet, X9313ZSIZ-3 pinout, X9313ZSIZ-3 application, or X9313ZSIZ-3 equivalent, key selection criteria include its 1kΩ RTOTAL value, SOIC-8 package, 3V–5.5V supply compatibility, ±4.4mA max wiper current, and nonvolatile memory retention of 100 years - critical for power-cycle-stable calibration in embedded control systems.

Technical Context

The X9313ZSIZ-3 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 wiper resistance typically 40Ω at VCC = 5V.

Control logic operates via three dedicated inputs: CS (chip select), U/D (direction), and INC (edge-triggered increment/decrement). A store operation occurs on CS rising edge while INC is HIGH, writing the current wiper position to nonvolatile memory for automatic recall at power-up.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (Pb-free, RoHS compliant), M8.15 outline, 3.9mm × 4.9mm body, 1.27mm lead pitch.

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 X9313ZSIZ-3 offers unique 1kΩ RTOTAL for low-impedance analog paths, guaranteed nonvolatile recall without host intervention, and minimal GPIO footprint - making it optimal for self-contained, calibration-critical industrial modules.

Availability

X9313ZSIZ-3 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and medical instrument gain adjustment requiring stable component supply across long-lifecycle deployments.

Supply support for X9313ZSIZ-3 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 solutions provider, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure ICs.

The X9313 family was designed specifically for replacing mechanical potentiometers in calibration-critical analog signal paths where nonvolatile setting retention, temperature stability, and solid-state reliability are mandatory.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313ZSIZ-3?

The X9313ZSIZ-3 specifies ΔV = |VH − VL| ≤ 4V for the Z-series variant. This limit is defined by its 1kΩ end-to-end resistance and internal power dissipation constraints. Exceeding 4V risks exceeding the 16mW power rating and may cause irreversible resistance drift or wiper damage. Always ensure applied voltage stays within this bound regardless of VCC level.

Does X9313ZSIZ-3 require an external pull-up resistor on the INC line?

No, the X9313ZSIZ-3 does not require an external pull-up on the INC line. Its INC input has CMOS-compatible thresholds (VIL ≤ 0.8V, VIH ≥ 2V) and leakage current under ±10µA, allowing direct connection to microcontroller GPIOs configured as push-pull outputs. External pull-ups are unnecessary and may interfere with the required negative-edge triggering behavior.

Can X9313ZSIZ-3 operate with VCC = 3.3V while maintaining full 32-tap functionality?

Yes, X9313ZSIZ-3 fully supports VCC = 3.3V within its specified 3V–5.5V range. All electrical parameters-including 32-tap resolution, nonvolatile store timing (10ms), and wiper resistance-are guaranteed across this range. At 3.3V, active current drops to ~1.5mA (typical), and standby current remains ≤500µA, enabling low-power portable instrumentation use.

How is the wiper position recalled after power-up in X9313ZSIZ-3?

Upon VCC ramp completion, the X9313ZSIZ-3 automatically reads the last stored wiper value from nonvolatile memory and configures the internal switch matrix within 10µs (tPU). No external command or initialization sequence is required - the device powers up in its previously saved state, enabling true "set-and-forget" calibration in unattended systems.

Is the X9313ZSIZ-3 RoHS compliant and compatible with lead-free reflow soldering?

Yes, X9313ZSIZ-3 is RoHS compliant (Pb-free) and qualified for lead-free reflow soldering per JEDEC J-STD-020. Its M8.15 SOIC package uses 100% matte tin (e3) termination finish and meets peak reflow temperatures up to 260°C. The datasheet explicitly confirms Pb-free processing compatibility for both SnPb and Pb-free soldering operations.