Renesas X9313ZSI-3T1

Overview

X9313ZSI-3T1 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 1kΩ end-to-end resistance. It operates from 3V to 5.5V, supports terminal voltages from –VCC to +VCC, and delivers ±4.4mA wiper current for precision analog trimming in embedded control systems.

For engineers reviewing the X9313ZSI-3T1 datasheet, X9313ZSI-3T1 pinout, X9313ZSI-3T1 application, or X9313ZSI-3T1 equivalent, this device serves as a solid-state replacement for mechanical potentiometers in voltage divider, gain-setting, offset adjustment, and sensor calibration circuits requiring power-up recall and long-term setting retention.

Technical Context

The X9313ZSI-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 U/D and step triggered on INC falling edge.

Wiper position is stored into nonvolatile memory when CS rises while INC is high, and automatically recalled at power-up. The device supports both three-terminal potentiometer and two-terminal variable resistor configurations, with temperature-compensated resistance and ±20% end-to-end tolerance.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (Pb-free, RoHS compliant), 3.9mm × 4.9mm body, 1.27mm lead 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 X9313ZSI-3T1 offers unique advantages in bipolar signal compatibility (±VCC terminals), minimal GPIO footprint (3-wire), and guaranteed power-up recall-making it optimal for industrial analog trimming where reliability, simplicity, and voltage range are primary constraints.

Availability

X9313ZSI-3T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, audio level control, and embedded analog front-end trimming requiring stable component supply and long-term obsolescence support.

Supply support for X9313ZSI-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 solid-state replacement of mechanical potentiometers in analog trimming applications demanding nonvolatile setting retention, wide voltage range operation, and robust industrial temperature performance.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313ZSI-3T1?

The X9313ZSI-3T1 supports ΔV = |VH − VL| up to 4V for the Z-series (1kΩ variant). This limit is specified in the Absolute Maximum Ratings table and applies regardless of VCC level. Exceeding 4V risks irreversible damage to the internal resistor array or wiper switches.

Does X9313ZSI-3T1 retain its wiper position after power removal?

Yes, X9313ZSI-3T1 stores the wiper position in nonvolatile memory upon a valid store command (CS rising edge with INC = HIGH) and recalls it automatically within 10µs of VCC stabilization at power-up. Data retention is rated for 100 years under normal operating conditions.

Can X9313ZSI-3T1 be used in bipolar analog circuits with negative voltages?

Yes, X9313ZSI-3T1 supports terminal voltages from –VCC to +VCC, enabling direct use in bipolar signal paths such as AC-coupled audio stages or dual-supply op-amp circuits - provided the absolute voltage on RH/VH, RL/VL, and RW/VW remains within –6V to +7V relative to VSS.

What is the wiper resistance of X9313ZSI-3T1 and how does it affect accuracy?

X9313ZSI-3T1 has a typical wiper resistance of 40Ω at VCC = 5V. In voltage divider configurations, this adds series resistance to the wiper path, introducing a small error proportional to load current. For loads drawing <100µA, the error remains below 0.5%; heavier loads require compensation in design.

Is X9313ZSI-3T1 RoHS compliant and what package does it use?

Yes, X9313ZSI-3T1 is RoHS compliant and supplied in an 8-lead SOIC package (Pb-free, M8.15 outline) with 1.27mm lead pitch. The "T1" suffix indicates tape-and-reel packaging per TB347 specifications, suitable for automated SMT assembly.