Renesas X9313US-3T1

Overview

X9313US-3T1 from Intersil is a digitally controlled potentiometer (XDCP™) with linear taper, 32-tap resolution, and nonvolatile wiper position storage. It operates as a three-terminal potentiometer or two-terminal variable resistor, supports ±V_CC terminal voltages, uses a 3-wire serial interface (CS/U/D/INC), and delivers 10 kΩ end-to-end resistance at 3–5.5 V supply. It is used in precision analog trimming, sensor calibration, and programmable gain control circuits.

For engineers reviewing the X9313US-3T1 datasheet, X9313US-3T1 pinout, X9313US-3T1 application, or X9313US-3T1 equivalent, key selection criteria include its 3-wire interface timing (t_IW = 5 µs), nonvolatile recall on power-up, ±20% R_TOTAL tolerance, 100-year data retention, and SOIC-8 package compatibility with industrial temperature range (−40°C to +85°C).

Technical Context

The X9313US-3T1 implements a 31-element resistor array with electronically switched wiper access points, controlled by an up/down counter decoded into 32 discrete tap positions. Its "make-before-break" switching prevents open-circuit transients during wiper movement.

Nonvolatile memory stores wiper position upon CS↑ while INC = HIGH, enabling automatic restoration after power cycling. The device operates in active mode (I_CC ≤ 3 mA) or standby (I_SB ≤ 500 µA), with input logic compatible across 3–5.5 V V_CC, and supports bidirectional terminal voltage swing from −V_CC to +V_CC.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (Pb-free), JEDEC MS-012-AA compliant, body size 4.9 mm × 3.9 mm × 1.75 mm, pitch 1.27 mm.

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 X9313US-3T1 uniquely combines 3-wire simplicity, guaranteed nonvolatile recall, and industrial temperature rating - making it optimal for unattended or safety-critical trimming where power interruption is common.

Availability

X9313US-3T1 is available at Aetrix Electronics and suitable for audio signal conditioning, sensor calibration, programmable reference generation, and motor control trimming requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for X9313US-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 environments demanding long-term calibration stability, shock/vibration immunity, and deterministic power-up behavior - targeting industrial automation, test equipment, and medical instrumentation.

FAQ

What is the operating voltage range for the X9313US-3T1?

The X9313US-3T1 operates from 3 V to 5.5 V on V_CC. This range supports both 3.3 V and 5 V logic systems without external regulation. Terminal voltages (RH/VH, RL/VL, RW/VW) tolerate −V_CC to +V_CC, enabling bipolar analog signal handling. The X9313US-3T1 datasheet specifies that exceeding 5.5 V on V_CC may damage the device, and operation below 3 V disables reliable counter and memory functions.

Does the X9313US-3T1 retain its wiper position after power loss?

Yes, the X9313US-3T1 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This occurs only if a store command is issued (CS↑ while INC = HIGH) prior to power-down. The X9313US-3T1 guarantees 100-year data retention and 100,000 store cycles, making it suitable for applications where calibration must persist across maintenance intervals or unexpected outages.

How many wiper positions does the X9313US-3T1 support?

The X9313US-3T1 provides 32 discrete wiper tap positions, corresponding to 31 equal resistive segments in its linear array. Each step represents approximately 3% of total resistance (R_TOTAL/31). The X9313US-3T1 does not support interpolation or analog smoothing between taps - position changes occur in quantized steps synchronized to the INC input edge.

Can the X9313US-3T1 be used in AC-coupled circuits?

Yes, the X9313US-3T1 supports terminal voltages from −V_CC to +V_CC, allowing direct use in AC-coupled signal paths with proper biasing. For example, RH/VH and RL/VL can be biased at ±2.5 V in a ±5 V system, and the wiper remains functional across the full swing. The X9313US-3T1's ±4.4 mA max wiper current and 40 Ω typical wiper resistance ensure minimal distortion in audio-frequency applications.

What package type is used for the X9313US-3T1?

The X9313US-3T1 is supplied in an 8-lead SOIC package (JEDEC MS-012-AA), Pb-free and RoHS-compliant, with dimensions 4.9 mm × 3.9 mm × 1.75 mm and 1.27 mm lead pitch. The "T1" suffix indicates tape-and-reel packaging per Intersil TB347 specification. This package is compatible with standard surface-mount reflow processes and fits legacy footprints designed for industry-standard 8-pin SOIC ICs.