Renesas X9313UMIZT1

Overview

X9313UMIZT1 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 ±VCC terminal voltage capability. It implements a 31-element resistor array with temperature-compensated end-to-end resistance tolerance of ±20%, supports VCC = 4.5–5.5V, and operates across –40°C to +85°C in an 8-lead MSOP package. It serves as a solid-state replacement for mechanical potentiometers in precision analog trimming applications.

For engineers reviewing the X9313UMIZT1 datasheet, X9313UMIZT1 pinout, X9313UMIZT1 application, or X9313UMIZT1 equivalent, key selection considerations include its 50kΩ end-to-end resistance, nonvolatile recall on power-up, make-before-break wiper switching, ±4.4mA max wiper current, and compatibility with industrial-grade signal conditioning circuits requiring stable, reprogrammable resistance control.

Technical Context

The X9313UMIZT1 integrates a 5-bit up/down counter, nonvolatile memory for wiper position retention, and a resistor array with 31 series elements and 32 accessible taps. Its control logic responds to negative-edge-triggered INC pulses while U/D sets direction, and CS enables selection and initiates nonvolatile store when high with INC high.

Wiper movement follows a bounded, non-wraparound scheme - it halts at terminal positions (tap 0 or 31) - and exhibits make-before-break switching during multi-tap transitions, causing temporary reduction in effective RTOTAL. The device maintains stored wiper state for 100 years and withstands 100,000 data changes per bit.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (Pb-free), JEDEC MO-187-AA compliant, body dimensions 3.0mm × 3.0mm × 1.1mm (M8.118).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ50 and MCP41050-I/P, the X9313UMIZT1 offers deterministic power-on behavior without host dependency, simpler 3-wire control, and guaranteed 100-year data retention - making it optimal for unattended or safety-critical analog tuning where reliability and autonomy are paramount.

Availability

X9313UMIZT1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and motor drive current limit tuning requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle support.

Supply support for X9313UMIZT1 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 series was designed specifically for solid-state replacement of mechanical potentiometers in analog signal conditioning, offering nonvolatile trim, industrial temperature operation, and robust 3-wire digital control.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313UMIZT1?

The X9313UMIZT1 supports a differential voltage ΔV = |VH − VL| of up to 10V, as specified for X9313U-series devices. This allows use in ±5V systems without external attenuation. Exceeding 10V risks permanent damage, even if individual terminal voltages remain within –VCC to +VCC limits.

Does X9313UMIZT1 retain its wiper position after power cycling?

Yes, X9313UMIZT1 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is inherent to the device architecture and requires no external components or MCU intervention - the wiper resumes the last stored tap position within 10µs after VCC stabilizes.

Can X9313UMIZT1 operate with a 3.3V supply?

No, X9313UMIZT1 is rated for VCC = 4.5V to 5.5V only. It is not compatible with 3.3V logic systems. For 3V operation, consider the X9313UMZ-3 or X9313UMIZ-3 variants, which explicitly specify 3V–5.5V supply range in their ordering information.

What is the wiper resistance specification for X9313UMIZT1 and how does it affect circuit accuracy?

X9313UMIZT1 has a typical wiper resistance (RW) of 40Ω at VCC = 5V, with a maximum of 100Ω. In voltage divider configurations, this adds series error - e.g., at 50kΩ RTOTAL, RW introduces <0.2% gain error. In low-impedance feedback paths (<1kΩ), RW may require compensation or buffer isolation.

Is X9313UMIZT1 pin-compatible with other X9313 variants in the same package?

Yes, all X9313 variants in the 8-lead MSOP package (e.g., X9313UMZT1, X9313WMIZT1) share identical pinout and footprint per M8.118 drawing. However, electrical differences - such as RTOTAL (50kΩ vs. 10kΩ), supply range, and temperature grade - must be verified per datasheet before substitution.