Renesas X9241AYVIT2

Overview

X9241AYVIT2 from Intersil is a quad digital controlled potentiometer (XDCP™) IC with nonvolatile storage, 2-wire I²C interface, 64-tap resolution per channel, 2kΩ end-to-end resistance per pot, and -40°C to +85°C industrial temperature range. It functions as four independent digitally adjustable resistors in a single 20-lead TSSOP package, used for precision gain/offset trimming in sensor signal conditioning circuits.

For engineers reviewing the X9241AYVIT2 datasheet, X9241AYVIT2 pinout, X9241AYVIT2 application, or X9241AYVIT2 equivalent, this page delivers verified electrical specs, validated pin functions, confirmed cascade-mode operation, real-world use cases in analog front-ends, and two manufacturer-validated alternative parts with documented differences in resistance value and temperature grade.

Technical Context

The X9241AYVIT2 implements four independent 63-segment resistor arrays, each controlled by a 6-bit volatile Wiper Counter Register (WCR) and backed by four 8-bit nonvolatile Data Registers (DR0–DR3). Power-up automatically loads DR0 into the WCR for each potentiometer.

It uses a standard 2-wire I²C-compatible interface with slave address formed by fixed 0101b prefix plus A0–A3 inputs, supports global and individual register transfers, and enables wiper increment/decrement via clocked SCL pulses while SDA is HIGH/LOW - all without host MCU firmware overhead.

Key Specifications

Pinout & Package

Package: 20-lead TSSOP (RoHS-compliant, Pb-free matte tin finish), 6.5mm × 4.4mm body, 0.65mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9241AYSIZ and AD5242BRUZ10, the X9241AYVIT2 uniquely combines TSSOP packaging, 2kΩ resistance, industrial temperature range, and hardware-supported cascade mode - making it optimal for space-constrained, multi-pot calibration tasks requiring matched performance and nonvolatile retention.

Availability

X9241AYVIT2 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable gain amplifiers, audio channel balancing, and power supply trim applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for X9241AYVIT2 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 leading provider of precision analog and power management ICs, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure solutions.

The X9241A family was designed specifically for replacing mechanical potentiometers in automated calibration, sensor conditioning, and analog signal-path tuning - emphasizing nonvolatile retention, I²C simplicity, and multi-channel integration.

FAQ

What is the exact end-to-end resistance value of each potentiometer in X9241AYVIT2?

The X9241AYVIT2 has a nominal end-to-end resistance of 2kΩ per potentiometer, with ±20% tolerance as specified in the Analog Specifications table. This value is fixed per device variant and confirmed in the Ordering Information section for the Y-series (X9241AYxxx) marking. Each pot maintains this resistance across its full 64-tap range, enabling predictable current limiting and voltage division in X9241AYVIT2-based designs.

Does X9241AYVIT2 support true I²C bus operation including ACK polling and repeated START conditions?

Yes, X9241AYVIT2 fully complies with I²C protocol requirements: it responds to standard START/STOP conditions, issues ACK after address and command byte receipt, and supports ACK polling during nonvolatile write cycles (t_WR = 10ms max). Timing parameters including t_SU:STA, t_HD:STA, and t_BUF are explicitly defined in the AC Electrical Specifications - confirming interoperability with standard I²C masters in X9241AYVIT2 implementations.

Can X9241AYVIT2 be used in cascade mode with all four potentiometers linked together?

Yes, X9241AYVIT2 supports full cascade configuration: POT0→POT1→POT2→POT3 (or circular POT3→POT0) by setting the CM bit in each relevant WCR. External connections require VH/RH of higher-order pot tied to VL/RL of lower-order pot, with only one wiper enabled (DW = 0). The resulting resistance ranges from 4kΩ to 200kΩ depending on individual pot values - a capability explicitly verified in the Cascade Mode section of the X9241AYVIT2 datasheet.

What is the maximum allowable voltage on the VH, VL, and VW pins of X9241AYVIT2?

The absolute maximum voltage on any VH/RH, VL/RL, or VW/RW pin of X9241AYVIT2 is -3.0V to +5V referenced to VSS, as stated in the Absolute Maximum Ratings table. Additionally, the differential voltage ΔV = |VH – VL| must not exceed 10V. These limits apply under all operating and transient conditions - exceeding them risks permanent damage to the internal FET switches and resistor arrays in the X9241AYVIT2.

How does power-up behavior work for X9241AYVIT2 wiper positions?

On power-up, X9241AYVIT2 automatically loads the contents of Data Register 0 (DR0) for each potentiometer into its corresponding volatile Wiper Counter Register (WCR), establishing the initial wiper position. This recall occurs within 1ms (t_PUR) after VCC reaches regulation. To preserve custom settings, users must explicitly execute a Global XFR WCR to Data Register command before power-down - otherwise, only DR0 values persist across cycles in the X9241AYVIT2.