Renesas X9313ZSIZ

Overview

X9313ZSIZ from Intersil is a digitally controlled potentiometer (XDCP™) with 32 linear tap positions, 1kΩ end-to-end resistance, ±VCC terminal voltage range, and nonvolatile wiper position storage. It operates from 3V to 5.5V, consumes ≤3mA active current, and is housed in an 8-lead SOIC package rated for –40°C to +85°C. It serves as a solid-state replacement for mechanical potentiometers in precision analog trimming applications.

For engineers reviewing the X9313ZSIZ datasheet, X9313ZSIZ pinout, X9313ZSIZ application, or X9313ZSIZ equivalent, key selection criteria include its 1kΩ RTOTAL tolerance (±20%), wiper resistance (40Ω typ. at 5V), 3-wire serial interface timing (tIW = 5µs), nonvolatile endurance (100,000 cycles), and industrial temperature rating.

Technical Context

The X9313ZSIZ 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 increment triggered on INC falling edge.

Wiper position is stored in nonvolatile memory when CS rises while INC is HIGH, and automatically recalled at power-up. Terminal voltages support rail-to-rail operation (–VCC to +VCC), and absolute linearity is ±1 MI (minimum increment = RTOTAL/31).

Key Specifications

Pinout & Package

Package: 8-lead SOIC (Pb-free, RoHS compliant), JEDEC MS-012-AA compliant, body size 4.9mm × 3.9mm × 1.75mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ-10 and MCP41010-I/P, the X9313ZSIZ offers deterministic single-channel 3-wire control, guaranteed power-up recall without firmware intervention, and lower RTOTAL for higher current drive capability-making it optimal for standalone analog trimming in resource-constrained industrial nodes.

Availability

X9313ZSIZ is available at Aetrix Electronics and suitable for laser diode bias control, programmable gain amplification, offset voltage calibration, comparator hysteresis setting, and analog sensor signal conditioning requiring stable component supply across extended temperature ranges.

Supply support for X9313ZSIZ 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 product line was designed specifically for replacing mechanical potentiometers in analog trimming applications demanding nonvolatile setting retention, rail-to-rail operation, and robust industrial temperature performance.

FAQ

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

The X9313ZSIZ specifies ΔV = |VH – VL| ≤ 4V for the Z-series (including X9313ZSIZ), as defined in Absolute Maximum Ratings on page 5 of FN8177 Rev 7.00. This limit applies regardless of VCC level and must be observed to prevent damage to the resistor array or wiper switches.

Does X9313ZSIZ require an external clock or microcontroller to operate?

No, the X9313ZSIZ operates with a self-contained 3-wire asynchronous interface (CS/U/D/INC) and requires no external clock. A simple GPIO-controlled sequence-pulling CS LOW, toggling INC with U/D set-is sufficient to move the wiper. Nonvolatile storage is triggered by a specific CS↑/INC HIGH condition, eliminating need for firmware or timing-critical drivers.

Can X9313ZSIZ be used in a two-terminal variable resistor configuration?

Yes, the X9313ZSIZ supports both three-terminal potentiometer and two-terminal variable resistor configurations. In two-terminal mode, either RH/VH or RL/VL is tied to RW/VW, leaving one fixed terminal and the wiper as the two accessible nodes-enabling use in current-setting or gain-adjustment applications per Figure 8.1 in the datasheet.

What is the wiper resistance specification for X9313ZSIZ at 3V supply?

The datasheet specifies RW = 40Ω typical at VCC = 5V (page 5, Potentiometer Characteristics table). While not explicitly tested at 3V, the wiper resistance is process-dependent and remains within 40–100Ω across the 3V–5.5V operating range, as confirmed by the "Wiper Resistance" parameter limits applying to the full VCC range in Table on page 5.

How does the X9313ZSIZ handle power-up sequencing to avoid unintended wiper movement?

To prevent spurious wiper shifts or accidental store operations, the datasheet (page 7) recommends bringing CS and INC HIGH before or concurrently with VCC ramp-up. The X9313ZSIZ then recalls its last-stored wiper position after tPU = 10µs (power-up to wiper stable), ensuring deterministic behavior without external intervention.