Renesas X9313ZMIZT1

Overview

X9313ZMIZT1 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 32-tap linear resistor array with nonvolatile wiper position storage, 3-wire serial interface (CS/U/D/INC), ±VCC terminal voltage tolerance, and 1kΩ end-to-end resistance - used for precision analog trimming in voltage reference and op-amp feedback networks.

For engineers reviewing the X9313ZMIZT1 datasheet, X9313ZMIZT1 pinout, X9313ZMIZT1 application, or X9313ZMIZT1 equivalent, key selection criteria include its industrial temperature range (−40°C to +85°C), MSOP-8 package, 1kΩ RTOTAL tolerance (±20%), wiper resistance (40Ω typ. at 5V), and nonvolatile recall on power-up without external memory.

Technical Context

The X9313ZMIZT1 integrates a 31-element resistor ladder, 5-bit up/down counter, nonvolatile EEPROM for wiper position retention, and make-before-break wiper switching. Its control logic responds to negative-edge-triggered INC pulses while U/D sets direction, and CS enables selection or initiates nonvolatile store when high with INC high.

It operates as either a three-terminal potentiometer (RH/VH–RW/VW–RL/VL) or two-terminal variable resistor, with terminal voltage range spanning −VCC to +VCC and absolute linearity error limited to ±1 MI (minimum increment = RTOTAL/31). Wiper current is rated ±4.4mA max, supporting direct connection into low-current analog signal paths.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (Mo-187-AA compliant), body dimensions 3.0mm × 3.0mm × 0.85mm, lead pitch 0.65mm, RoHS-compliant matte tin plating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9313ZMIZT1, AD5170BRMZ-10 offers higher resolution and I²C compatibility but sacrifices bipolar terminal voltage support and requires different layout; MCP41HV51-103E/MS extends voltage range significantly but increases interface complexity and cost - X9313ZMIZT1 remains optimal for compact, low-pin-count, ±VCC analog trimming at 1kΩ.

Availability

X9313ZMIZT1 is available at Aetrix Electronics and suitable for voltage reference trimming, op-amp gain calibration, comparator hysteresis setting, and audio tone stack adjustment requiring stable component supply across industrial temperature ranges.

Supply support for X9313ZMIZT1 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 solid-state replacement of mechanical potentiometers in analog signal conditioning, offering nonvolatile memory, wide voltage tolerance, and robust temperature performance for embedded control and calibration.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313ZMIZT1?

The X9313ZMIZT1 specifies ΔV = |VH − VL| ≤ 4V for the Z-series (1kΩ variant). This limit ensures safe operation of the internal resistor array and switching elements. Exceeding 4V risks irreversible damage, even if individual terminal voltages remain within −VCC to +VCC bounds. Always verify voltage differential in your circuit layout before finalizing design.

Does X9313ZMIZT1 require an external pull-up or pull-down resistor on the INC pin?

No, X9313ZMIZT1 does not require external biasing on the INC pin. Its input leakage current is ±10µA over temperature, and VIH/VIL thresholds are defined at +2.0V and +0.8V respectively - compatible with standard CMOS logic outputs. Direct connection to a microcontroller GPIO suffices; adding pull resistors may interfere with negative-edge detection timing.

Can X9313ZMIZT1 be used in a 3.3V system with 5V analog signals applied to RH/VH or RL/VL?

Yes - X9313ZMIZT1 supports terminal voltages from −VCC to +VCC. With VCC = 3.3V, RH/VH and RL/VL may swing from −3.3V to +3.3V. However, 5V analog signals exceed this range and will violate absolute maximum ratings. For ±5V signal paths, use the X9313W or X9313U variants (rated for 10V ΔV) instead of X9313ZMIZT1.

How long does it take for X9313ZMIZT1 to restore wiper position after power-up?

X9313ZMIZT1 recalls stored wiper position within 10µs after VCC stabilizes (tPU specification). This occurs automatically without host intervention - no initialization sequence or command is needed. The device is fully operational and electrically stable at the recalled tap position by 10µs post-power-up, enabling immediate analog signal routing.

Is the wiper resistance of X9313ZMIZT1 constant across all 32 tap positions?

Yes - wiper resistance (RW) is specified as 40Ω typical at VCC = 5V and is independent of tap position. This consistency arises from the fixed on-resistance of the CMOS transfer gates used in the wiper switching network. At 3.3V supply, RW increases slightly (data not published), but variation across taps remains negligible for precision applications.