Renesas X9313WMIZT1

Overview

X9313WMIZT1 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 adjustment across temperature and power cycles.

For engineers reviewing the X9313WMIZT1 datasheet, X9313WMIZT1 pinout, X9313WMIZT1 application, or X9313WMIZT1 equivalent, key selection criteria include its 3-wire serial interface timing (t_IW = 5 µs), 8-lead MSOP package, -40°C to +85°C industrial temperature range, and compatibility with 3V–5.5V supply rails for embedded trimming and calibration tasks.

Technical Context

The X9313WMIZT1 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 U/D and edge-triggered movement via INC.

Nonvolatile memory stores the last wiper position on CS↑ while INC = HIGH, ensuring automatic recall at power-up. The device operates in active mode (I_CC ≤ 3 mA) or low-power standby (I_SB ≤ 500 µA), 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 MSOP (M8.118), RoHS-compliant, Pb-free matte tin termination, 3.0 mm × 3.0 mm body, 0.65 mm pitch.

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 X9313WMIZT1 offers minimal GPIO overhead (3 pins), guaranteed power-up wiper recall, and ±V_CC analog terminal operation-making it optimal for space-constrained industrial controls where simplicity and reliability outweigh protocol flexibility.

Availability

X9313WMIZT1 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded power supply trim, and programmable voltage reference designs requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant packaging.

Supply support for X9313WMIZT1 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 IC supplier, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure solutions.

The X9313 family was designed specifically for solid-state replacement of mechanical potentiometers in trimming, calibration, and analog control applications where nonvolatile setting retention and temperature-stable performance are mandatory.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313WMIZT1?

The X9313WMIZT1 supports a maximum differential voltage ΔV = |VH − VL| of 10 V, as specified for X9313W-series devices in the Absolute Maximum Ratings table. This applies regardless of supply voltage and enables use in ±5 V signal chains. Exceeding 10 V risks permanent damage to the internal resistor array or wiper switches.

Does X9313WMIZT1 require external components to operate its 3-wire interface?

No, the X9313WMIZT1 operates its 3-wire interface (CS, U/D, INC) with no external passive components. All timing and logic thresholds are internally defined. Pull-up or pull-down resistors are unnecessary unless the host system requires specific idle-state biasing for noise immunity - in which case 10 kΩ to V_CC or V_SS is sufficient.

How does the nonvolatile memory in X9313WMIZT1 retain wiper position during power loss?

The X9313WMIZT1 uses EEPROM-based nonvolatile memory to store the 5-bit wiper counter value. A store operation is triggered only when CS transitions HIGH while INC is held HIGH. Once stored, the value persists for ≥100 years and automatically loads into the counter on next power-up, restoring the exact wiper position without host intervention.

Can X9313WMIZT1 be used in AC-coupled signal paths with negative voltages?

Yes, X9313WMIZT1 supports terminal voltages from –V_CC to +V_CC, meaning it can handle negative analog signals when biased appropriately. For example, with V_CC = 5 V, RH/VH and RL/VL accept –5 V to +5 V, enabling direct use in ±5 V op-amp stages or audio line drivers without level-shifting circuitry.

What is the wiper resistance specification for X9313WMIZT1 and how does it affect circuit accuracy?

X9313WMIZT1 specifies wiper resistance R_W as 40 Ω typical (max 100 Ω) at V_CC = 5 V. In voltage divider configurations, this adds series resistance to the wiper output, causing gain error proportional to R_W/R_TOTAL. At 10 kΩ total resistance, 100 Ω wiper resistance introduces ≤1% error - acceptable for most trimming applications but relevant in high-precision feedback networks.