Renesas X9313ZS-3T2

Overview

X9313ZS-3T2 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 is used for precision analog trimming in voltage dividers and programmable gain circuits.

For engineers reviewing the X9313ZS-3T2 datasheet, X9313ZS-3T2 pinout, X9313ZS-3T2 application, or X9313ZS-3T2 equivalent, key selection criteria include its 1kΩ RTOTAL tolerance (±20%), ±4.4mA max wiper current, 5µs INC-to-VW response, 100-year data retention, and SOIC-8 package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

The X9313ZS-3T2 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 by negative-edge INC while CS is low.

Wiper position is stored into nonvolatile memory when CS rises while INC is high-requiring no external EEPROM-and recalled automatically at power-up. The device supports both three-terminal potentiometer and two-terminal variable resistor configurations, with RH/VH and RL/VL terminals rated for ±VCC voltage swing relative to VSS.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (Pb-free, RoHS compliant), body width 3.9mm, standard JEDEC MS-012-AA footprint (M8.15 drawing).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5170BRMZ-10 and MCP41010-I/P, the X9313ZS-3T2 uniquely combines 1kΩ low-RTOTAL, ±VCC terminal capability, and true nonvolatile wiper storage in an industry-standard SOIC-8 package-making it optimal for space-constrained, bipolar-signal, and maintenance-free analog trimming.

Availability

X9313ZS-3T2 is available at Aetrix Electronics and suitable for audio volume control, programmable gain amplifiers, DC power supply trim, sensor offset compensation, and industrial calibration systems requiring stable component supply across extended temperature ranges.

Supply support for X9313ZS-3T2 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 storage, robust CMOS logic, and wide supply/terminal voltage flexibility.

FAQ

What is the maximum allowable voltage across RH/VH and RL/VL terminals for X9313ZS-3T2?

The X9313ZS-3T2 specifies ΔV = |VH – VL| ≤ 4V for the Z-series variant. This limit applies regardless of VCC level and ensures safe operation of the internal resistor array and wiper switches. Exceeding 4V risks irreversible damage to the thin-film elements and is outside Absolute Maximum Ratings.

Does X9313ZS-3T2 require external pull-up resistors on CS, U/D, or INC pins?

No, X9313ZS-3T2 does not require external pull-ups. Its CS, U/D, and INC inputs have CMOS-compatible thresholds (VIL ≤ 0.8V, VIH ≥ 2V) and ≤10µA leakage current. Direct connection to MCU GPIOs-configured as push-pull outputs-is sufficient. Pull-ups may cause unintended state changes during reset or brown-out conditions.

How is nonvolatile storage triggered in X9313ZS-3T2, and what timing is required?

Nonvolatile storage in X9313ZS-3T2 is triggered by a rising edge on CS while INC is held HIGH. The store cycle takes 10ms (tWR), during which the device draws active current and ignores further INC edges. After completion, it enters standby mode. This sequence must occur only after desired wiper position is reached and stabilized.

Can X9313ZS-3T2 be used in AC-coupled signal paths where VH or VL swings below ground?

Yes, X9313ZS-3T2 supports terminal voltages from –VCC to +VCC relative to VSS. With VCC = 3.3V, VH or VL may swing from –3.3V to +3.3V-enabling direct use in AC-coupled audio or sensor interfaces without level-shifting circuitry. However, absolute voltage on any terminal must remain within –6V to +7V per Absolute Maximum Ratings.

What is the wiper resistance specification for X9313ZS-3T2, and how does it affect circuit performance?

X9313ZS-3T2 has a typical wiper resistance (RW) of 40Ω at VCC = 5V, with a maximum of 100Ω. This series resistance adds directly to output impedance in wiper-driven configurations-e.g., contributing ~4% error in a 1kΩ divider-and must be accounted for in precision voltage reference or low-impedance buffer designs.