Renesas X9313ZMIZ-3T1

Overview

X9313ZMIZ-3T1 from Intersil is a digitally controlled potentiometer (XDCP™) with 32 linear tap positions, 1kΩ end-to-end resistance, ±VCC terminal voltage capability, and nonvolatile wiper position storage. It functions as a solid-state three-terminal potentiometer or two-terminal variable resistor in precision analog trimming applications requiring stable, repeatable resistance settings across power cycles.

For engineers reviewing the X9313ZMIZ-3T1 datasheet, X9313ZMIZ-3T1 pinout, X9313ZMIZ-3T1 application, or X9313ZMIZ-3T1 equivalent, key selection considerations include its 3-wire serial interface timing (tCYC = 2µs), -40°C to +85°C industrial temperature range, MSOP-8 package, 3V–5.5V supply compatibility, and ±4.4mA max wiper current handling.

Technical Context

The X9313ZMIZ-3T1 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 the U/D input and movement triggered by negative-edge INC pulses.

Wiper position is stored in nonvolatile memory when CS rises while INC is HIGH, ensuring automatic recall at power-up. The device operates in low-power standby (≤500µA) when deselected and supports terminal voltages from -VCC to +VCC, enabling bipolar signal conditioning in op-amp feedback networks and voltage reference circuits.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (M8.118), RoHS-compliant, Pb-free matte tin finish, 3.0mm × 3.0mm body, 0.65mm pitch.

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 X9313ZMIZ-3T1 uniquely combines 3-wire simplicity, guaranteed power-up repeatability via integrated nonvolatile memory, and bipolar terminal voltage tolerance-making it optimal for robust, self-initializing analog front-ends in industrial control.

Availability

X9313ZMIZ-3T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and audio level control requiring stable component supply, long-term parameter retention, and RoHS-compliant packaging.

Supply support for X9313ZMIZ-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 solutions provider, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure ICs.

The X9313 family was designed specifically for solid-state replacement of mechanical potentiometers in trimming, calibration, and programmable gain applications where nonvolatile setting retention and bipolar signal handling are essential.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313ZMIZ-3T1?

The X9313ZMIZ-3T1 supports a maximum differential voltage ΔV = |VH − VL| of 4V, as specified for the X9313Z variant. This limit applies regardless of supply voltage and must be observed to prevent damage to the internal resistor array or wiper switches. Exceeding this value risks permanent degradation of linearity and endurance.

Does X9313ZMIZ-3T1 require an external pull-up resistor on the INC line?

No, the X9313ZMIZ-3T1 does not require an external pull-up on the INC line. Its INC input has CMOS-compatible thresholds (VIL ≤ 0.8V, VIH ≥ 2V) and ≤10µA leakage, allowing direct connection to open-drain or push-pull MCU GPIOs. Internal weak pull-down is not provided, so the host must ensure defined logic levels during idle periods to avoid unintended wiper movement.

Can X9313ZMIZ-3T1 operate with a 3.3V supply and still drive ±3.3V signals on its terminals?

Yes, the X9313ZMIZ-3T1 supports terminal voltages from -VCC to +VCC. With VCC = 3.3V, RH/VH and RL/VL can safely swing from -3.3V to +3.3V, enabling true bipolar operation in AC-coupled amplifier stages or dual-supply sensor interfaces without level-shifting circuitry.

How many wiper position changes can X9313ZMIZ-3T1 endure before failure?

The X9313ZMIZ-3T1 is rated for 100,000 data changes per bit in its nonvolatile memory, corresponding to 100,000 full wiper position stores. This endurance is independent of volatile wiper movements - unlimited incremental adjustments can be made between stores without affecting memory lifetime.

Is the wiper resistance of X9313ZMIZ-3T1 constant across all tap positions?

No, the wiper resistance of X9313ZMIZ-3T1 varies slightly with position due to series switch resistance and layout parasitics. At VCC = 5V, typical RW is 40Ω and maximum is 100Ω; at 3.3V, values scale proportionally. For precision applications, this variation must be included in total system resistance error budgets, especially in low-impedance feedback paths.