Renesas X9313WSIZ

Overview

X9313WSIZ 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, ±V_CC terminal voltage capability, and 10 kΩ end-to-end resistance. It operates as a solid-state replacement for mechanical potentiometers in precision analog trimming applications such as DC bias adjustment in op-amp circuits and programmable gain control.

For engineers reviewing the X9313WSIZ datasheet, X9313WSIZ pinout, X9313WSIZ application, or X9313WSIZ equivalent, key selection considerations include its industrial temperature range (–40°C to +85°C), SOIC-8 package, 3-wire interface timing constraints (t_IW = 5 µs), nonvolatile store-on-CS-high-with-INC-high behavior, and compatibility with 5 V ±10% supply.

Technical Context

The X9313WSIZ implements a resistor ladder of 31 precisely matched elements with a digitally controlled wiper switch network driven by a 5-bit up/down counter. Its control logic interprets CS low enable, U/D direction select, and negative-edge-triggered INC pulses to move the wiper one tap per valid transition.

Wiper position is retained in nonvolatile memory upon CS high while INC is high, enabling automatic power-up recall. The device supports both three-terminal potentiometer (VH–VW–VL) and two-terminal variable resistor configurations, with terminal voltages rated from –V_CC to +V_CC and absolute linearity of ±1 MI (minimum increment).

Key Specifications

Pinout & Package

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

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 X9313WSIZ offers unique value in industrial-grade 3-wire simplicity, guaranteed nonvolatile recall without firmware overhead, and direct SOIC-8 drop-in compatibility with legacy mechanical pot layouts-making it optimal for robust, low-microcontroller-footprint analog trimming.

Availability

X9313WSIZ is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, audio level control, and op-amp bias adjustment requiring stable component supply across extended temperature ranges.

Supply support for X9313WSIZ 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 company, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure solutions.

The X9313WSIZ belongs to Intersil's XDCP™ (Digitally Controlled Potentiometer) product line, designed specifically for replacing mechanical trimmers in analog signal conditioning, power control, and calibration-critical systems where long-term stability and nonvolatile setting retention are mandatory.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313WSIZ?

The X9313WSIZ supports a maximum differential voltage ΔV = |VH − VL| of 10 V, as specified for X9313W-series devices. This allows operation with ±5 V rails or 0–10 V unipolar signals without damage. Exceeding this limit risks permanent degradation of the resistor array or wiper switches, and violates Absolute Maximum Ratings in the FN8177 datasheet.

Does X9313WSIZ retain its wiper position after power cycling?

Yes, X9313WSIZ retains its last stored wiper position in nonvolatile memory for ≥100 years and automatically recalls it on power-up. This occurs only if the position was previously stored via CS high while INC was high. If no store operation was performed, the device powers up to the last stored value-not the last adjusted value-ensuring deterministic startup behavior in safety-critical analog paths.

Can X9313WSIZ operate from a 3.3 V supply?

No, X9313WSIZ is rated for 5 V ±10% (4.5–5.5 V) only. It is not compatible with 3.3 V logic or supply rails. For 3 V operation, consider the X9313-3 family variants (e.g., X9313ZMIZ-3), which specify 3–5.5 V V_CC range and different ordering markings-X9313WSIZ lacks internal level-shifting or low-voltage logic design.

What is the wiper resistance specification for X9313WSIZ at 5 V supply?

The wiper resistance (R_W) for X9313WSIZ is 40 Ω typical and 100 Ω maximum at V_CC = 5 V, as measured under specified test conditions (I_W = (VH − VL)/R_TOTAL). This low on-resistance minimizes insertion loss and gain error in precision voltage divider configurations, especially critical in high-impedance feedback networks.

How does the X9313WSIZ handle rapid successive INC pulses?

X9313WSIZ requires a minimum INC cycle time (t_CYC) of 2 µs and minimum HIGH/LOW periods (t_IH/t_IL) of 1 µs each. Violating these AC timing specs may cause missed or double-counted steps due to insufficient internal counter synchronization. The device does not implement debouncing or rate limiting-timing compliance must be ensured by the host controller driving CS/U/D/INC.