Renesas X9313WMIZ-3T1

Overview

X9313WMIZ-3T1 from Intersil is a digitally controlled potentiometer (XDCP™) with 32 linear tap positions, 10 kΩ end-to-end resistance, ±V_CC terminal voltage capability, and nonvolatile wiper position storage. It functions as a solid-state three-terminal potentiometer or two-terminal variable resistor in analog signal conditioning circuits requiring stable, repeatable resistance trimming across power cycles.

For engineers reviewing the X9313WMIZ-3T1 datasheet, X9313WMIZ-3T1 pinout, X9313WMIZ-3T1 application, or X9313WMIZ-3T1 equivalent, key selection criteria include its 3-wire serial interface timing (t_CYC = 2 µs), industrial temperature range (–40°C to +85°C), MSOP-8 package footprint, and guaranteed 100-year data retention in nonvolatile memory.

Technical Context

The X9313WMIZ-3T1 implements a 31-element resistor array with make-before-break wiper switching, enabling glitch-free resistance transitions. Its 5-bit up/down counter drives a decoder that selects one of 32 tap points, with wiper position stored to nonvolatile memory on CS↑/INC↑ edge.

Control logic operates at V_CC = 3V to 5.5V, supporting both active (I_SB ≤ 3 mA) and standby (I_SB ≤ 500 µA) modes. Terminal voltage tolerance spans –V_CC to +V_CC, and absolute linearity is ±1 MI (minimum increment = R_TOTAL/31).

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5171BRMZ-10 and MCP41010-I/P, the X9313WMIZ-3T1 uniquely delivers nonvolatile 32-tap control with ultra-low wiper resistance (40 Ω) and a minimal 3-wire interface - making it optimal for cost-sensitive, space-constrained industrial analog trimming where power-cycle persistence is mandatory.

Availability

X9313WMIZ-3T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply design, and audio signal path trimming requiring stable component supply across extended product lifecycles.

Supply support for X9313WMIZ-3T1 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 family was designed specifically for replacing mechanical potentiometers in analog front-ends where long-term stability, digital configurability, and nonvolatile memory are essential - targeting test equipment, process control, and medical instrumentation.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313WMIZ-3T1?

The X9313WMIZ-3T1 supports ΔV = |VH − VL| up to 10 V, as specified for X9313W-series devices. This allows direct use in ±5 V systems without external clamping. Exceeding this differential voltage risks permanent damage to the internal resistor array or wiper switches.

Does X9313WMIZ-3T1 require an external clock or microcontroller to retain its wiper position after power-down?

No. The X9313WMIZ-3T1 stores wiper position in on-chip nonvolatile memory automatically upon CS↑/INC↑. Once stored, the value persists for 100 years without external power or controller intervention. On power-up, the device recalls the last stored position and sets the wiper accordingly.

Can X9313WMIZ-3T1 operate with a 3.3 V supply, and what impact does that have on wiper resistance?

Yes, X9313WMIZ-3T1 is rated for V_CC = 3V to 5.5V. Wiper resistance is specified at V_CC = 5V (40 Ω typ), but remains low and stable down to 3V due to CMOS switch design. No significant increase occurs within the operating range - typical RW stays below 60 Ω at 3.3 V.

How does the "make-before-break" wiper switching in X9313WMIZ-3T1 prevent signal disruption during adjustment?

The X9313WMIZ-3T1 activates the next tap switch before releasing the previous one, ensuring continuous conduction across the resistor array. This avoids momentary open-circuit states that could cause voltage spikes or feedback loop instability - especially critical in op-amp gain-setting or comparator hysteresis applications.

Is the X9313WMIZ-3T1 pin-compatible with other members of the X9313 family, such as X9313WSIZ-3T1?

Yes - all X9313 variants, including X9313WMIZ-3T1 and X9313WSIZ-3T1, share identical 8-pin MSOP or SOIC footprints and pinouts. The only differences are R_TOTAL (10 kΩ vs. 10 kΩ), temperature grade (–40°C to +85°C for both), and package type (MSOP vs. SOIC). Electrical behavior and timing are functionally identical.