Renesas X9241AMVT1

Overview

X9241AMVT1 from Intersil is a quad digital controlled potentiometer (XDCP™) IC with nonvolatile storage, 2-wire I²C interface, 64-tap resolution per channel, ±3.0V to +5V terminal voltage range, and 2kΩ/10kΩ/50kΩ configurable resistor arrays - used for precision analog trimming in programmable power supplies, sensor calibration circuits, and audio level control systems.

For engineers reviewing the X9241AMVT1 datasheet, X9241AMVT1 pinout, X9241AMVT1 application, or X9241AMVT1 equivalent, this page delivers verified electrical specs, package mapping to 20-lead TSSOP, cascade-mode operation details, wiper register behavior on power-up, and real-world selection guidance against functionally comparable digital potentiometers.

Technical Context

The X9241AMVT1 integrates four independent CMOS resistor arrays (63 segments each), each with a volatile 6-bit Wiper Counter Register (WCR) and four nonvolatile Data Registers (DR0–DR3). Wiper position is controlled via I²C commands including Write WCR, Read WCR, XFR DR→WCR, and Increment/Decrement mode.

It supports cascade configuration across adjacent arrays using CM bit (bit 7 of WCR) and requires external wiring of VH/RH–VL/RL between pots; wiper disable (DW bit, bit 6) isolates VW/RW terminals during cascade operation. Power-up loads DR0 into each WCR, enabling deterministic startup behavior without host intervention.

Key Specifications

Pinout & Package

Package: 20-lead Thin Shrink Small Outline Package (TSSOP), body size 6.5mm × 4.4mm × 1.2mm, lead pitch 0.65mm, RoHS-compliant matte tin termination.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ10 and MCP42010-I/P, the X9241AMVT1 uniquely delivers quad-channel density, nonvolatile wiper recall, and hardware-supported cascade mode - making it optimal for space-constrained, self-initializing analog adjustment systems requiring ≥4 independent resistive elements.

Availability

X9241AMVT1 is available at Aetrix Electronics and suitable for programmable power supplies, sensor calibration circuits, audio level control systems, industrial DAC scaling modules, and embedded analog front-end designs requiring stable component supply and long-term obsolescence management.

Supply support for X9241AMVT1 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 leader in precision analog and power management ICs, delivering high-reliability solutions for industrial, infrastructure, and high-end consumer applications.

The X9241A family was designed specifically for digitally reconfigurable analog signal conditioning - targeting applications where mechanical potentiometers fail due to wear, environmental stress, or lack of remote control.

FAQ

What is the default wiper position after power-up for X9241AMVT1?

The X9241AMVT1 automatically loads the contents of Data Register 0 (DR0) into each potentiometer's Wiper Counter Register (WCR) on power-up. This ensures repeatable startup resistance without host initialization. For X9241AMVT1, DR0 values are factory-programmed to match its specific resistor array configuration (2kΩ/10kΩ/10kΩ/50kΩ), so wiper positions reflect calibrated defaults unless overwritten by the host.

Can X9241AMVT1 operate with a 3.3V I²C bus?

Yes, the X9241AMVT1 supports standard-mode I²C signaling with VIH ≥ 2.0V and VIL ≤ 0.8V, fully compatible with 3.3V logic levels. Its SDA pin is open-drain and requires an external pull-up resistor (typically 2.2kΩ–4.7kΩ to 3.3V). The device itself operates from a 5V ±10% VCC supply, independent of bus voltage.

How does cascade mode work on X9241AMVT1, and what external connections are required?

Cascade mode links two or more resistor arrays by connecting VL/RL of a higher-order pot to VH/RH of the next lower-order pot (e.g., VL1 to VH0). The CM bit (bit 7 of WCR) must be set to "1" in the lower-order pot. Only one wiper remains enabled (DW = 0); others are disabled (DW = 1) to float. Wiper movement crosses array boundaries automatically during Increment/Decrement commands.

What is the maximum wiper current rating for each potentiometer in X9241AMVT1?

The maximum wiper current depends on end-to-end resistance: ±4mA for the 2kΩ array (Pot0), and ±3mA for the 10kΩ (Pot1, Pot2) and 50kΩ (Pot3) arrays. Exceeding these limits risks thermal overstress or long-term reliability degradation. Derating applies above 25°C ambient - consult the DCP Wiper Current De-rating Curve in the datasheet.

Does X9241AMVT1 support simultaneous update of all four potentiometers' wiper positions?

Yes, X9241AMVT1 supports global transfer commands: "Global XFR Data Register to WCR" loads DR0–DR3 values from all four pots into their respective WCRs in one I²C transaction, and "Global XFR WCR to Data Register" saves all current wiper positions to nonvolatile memory simultaneously. These operations ensure synchronized analog behavior across channels without timing skew.