Renesas X9313USZ

Overview

X9313USZ 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 ±V_CC terminal voltage capability. It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming applications requiring power-up recall and stable resistance matching across temperature.

For engineers reviewing the X9313USZ datasheet, X9313USZ pinout, X9313USZ application, or X9313USZ equivalent, key selection criteria include its 10 kΩ end-to-end resistance, 0°C to +70°C commercial temperature range, SOIC-8 package, 3V–5.5V supply compatibility, and make-before-break wiper switching behavior critical for glitch-free analog signal adjustment.

Technical Context

The X9313USZ implements a 31-element resistor array with electronically switched wiper access at 32 discrete taps, controlled by an up/down counter decoded into analog switch selection. Its nonvolatile memory stores wiper position on CS↑ with INC HIGH, enabling automatic restoration after power cycling.

Operation relies on three digital control inputs: CS enables device selection and initiates store/standby transitions; U/D sets wiper direction; and edge-triggered INC advances the counter. Wiper resistance is typically 40 Ω at V_CC = 5 V, and terminal voltages support full rail-to-rail operation from –V_CC to +V_CC.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (Pb-free), JEDEC MS-012-AA compliant, body dimensions 4.9 mm × 3.9 mm × 1.75 mm (M8.15 outline).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5204BRUZ10 and MCP41010-I/P, the X9313USZ offers deterministic 3-wire timing, lower wiper resistance, and autonomous nonvolatile recall-reducing firmware complexity and improving analog signal integrity in single-channel trimming roles.

Availability

X9313USZ is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply references, audio signal level control, and laser diode bias adjustment requiring stable component supply and long-term calibration retention.

Supply support for X9313USZ 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 provider of precision analog and power management ICs, serving industrial, infrastructure, and high-end consumer markets with robust, high-reliability solutions.

The X9313USZ belongs to Intersil's XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in applications demanding nonvolatile setting retention, temperature-stable resistance matching, and low-noise analog signal control.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313USZ?

The X9313USZ supports a maximum differential voltage ΔV = |VH − VL| of 10 V under recommended operating conditions. This rating applies specifically to the X9313U and X9313W variants, including X9313USZ. Exceeding this limit risks irreversible damage to the internal resistor array or switching elements.

Does X9313USZ require external pull-up resistors on its control pins?

No, X9313USZ does not require external pull-up resistors on CS, U/D, or INC pins. Its input leakage current is ±10 µA max, and VIH/VIL thresholds are defined at 2.0 V and 0.8 V respectively-compatible with standard CMOS logic outputs. Pull-ups may be added only if host drivers exhibit weak drive strength or long trace lengths inducing noise.

Can X9313USZ operate with a 3.3 V supply while maintaining full functionality?

Yes, X9313USZ operates fully across 3 V to 5.5 V, including 3.3 V nominal supplies. All specifications-including 32-tap resolution, nonvolatile store timing (10 ms), and ±4.4 mA wiper current-are guaranteed within this range. The "-3" suffix in X9313USZ-3 explicitly denotes this extended voltage capability.

How is wiper position stored and recalled in X9313USZ?

In X9313USZ, wiper position is stored in nonvolatile memory when CS transitions HIGH while INC is held HIGH. Upon subsequent power-up, the stored value is automatically loaded into the counter and applied to the wiper within 10 µs, restoring the last valid setting without host intervention or initialization code.

What is the typical wiper resistance of X9313USZ and how does it affect circuit performance?

The typical wiper resistance of X9313USZ is 40 Ω at V_CC = 5 V (max 100 Ω). This low on-resistance minimizes gain error in op-amp feedback networks and reduces insertion loss in voltage divider configurations-especially critical in high-precision sensor signal chains where even 100 Ω series impedance can degrade accuracy.