Renesas X9241AYVIZT1

Overview

X9241AYVIZT1 from Intersil is a quad nonvolatile digital potentiometer IC with 2-wire I²C interface, 64-tap resolution per channel, ±3.0V to +5V terminal voltage range, and 2kΩ resistor array configuration across all four channels. It operates over –40°C to +85°C and is housed in a RoHS-compliant 20-lead TSSOP package, enabling precise analog control in programmable gain amplifiers and sensor calibration circuits.

For engineers reviewing the X9241AYVIZT1 datasheet, X9241AYVIZT1 pinout, X9241AYVIZT1 application, or X9241AYVIZT1 equivalent, key selection considerations include its cascading resistor arrays, 100-year nonvolatile data retention, 100,000-cycle register endurance, wiper current limits (±4mA for 2kΩ), and support for global register transfers via I²C.

Technical Context

The X9241AYVIZT1 implements four independent 63-element resistor arrays with digitally controlled FET-switched wipers, each driven by a volatile 6-bit Wiper Counter Register (WCR) and backed by four 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 user-configurable A0–A3 pins. All four pots share the same SCL/SDA bus and support instruction-based operations including direct WCR write/read, register-to-WCR transfer, global transfers, and real-time increment/decrement mode with SCL-synchronized stepping.

Key Specifications

Pinout & Package

Package: 20-lead Thin Shrink Small Outline Package (TSSOP), RoHS-compliant, –40°C to +85°C industrial temperature range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9241AYVIZT1, AD5242BRUZ10 offers finer resolution but lacks quad integration and cascading, while MCP42010-I/SL trades nonvolatility and channel count for SPI simplicity-making X9241AYVIZT1 uniquely suited for compact, self-contained, field-calibratable analog tuning in industrial environments.

Availability

X9241AYVIZT1 is available at Aetrix Electronics and suitable for programmable gain amplifiers, sensor calibration systems, LED driver trim, and power supply feedback networks requiring stable component supply, long-term calibration retention, and industrial temperature operation.

Supply support for X9241AYVIZT1 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, acquired by Renesas Electronics in 2017; its products serve industrial, infrastructure, and high-reliability embedded markets.

The X9241A family was designed for digitally programmable analog trimming in systems requiring calibration persistence, multi-channel integration, and robust I²C control-targeting test equipment, medical devices, and industrial automation.

FAQ

What is the resistor value configuration of the X9241AYVIZT1?

The X9241AYVIZT1 features four identical 2kΩ resistor arrays, one per potentiometer channel. This value is fixed per the ordering code 'Y' in X9241AYVIZT1 and confirmed in the Intersil FN8164 datasheet's Ordering Information table. Each array provides 64 discrete tap points, yielding a nominal step size of ~31.25Ω. The 2kΩ value is optimized for low-noise, moderate-current applications such as sensor biasing and gain setting.

Does the X9241AYVIZT1 support cascading of resistor arrays?

Yes, the X9241AYVIZT1 supports cascading: adjacent resistor arrays (e.g., POT2 to POT3) can be externally connected to synthesize higher total resistance values ranging from 4kΩ to 200kΩ. Cascading is enabled via the CM bit (bit 7) in the Wiper Counter Register and requires disabling all but one wiper using the DW bit. The datasheet confirms this capability applies to all X9241A variants, including X9241AYVIZT1.

What is the nonvolatile memory endurance and retention specification for the X9241AYVIZT1?

The X9241AYVIZT1 guarantees 100,000 data changes per bit per register and 100 years of data retention for its nonvolatile Data Registers (DR0–DR3). These specifications are explicitly stated in the "Endurance and Data Retention" section of the FN8164 datasheet and apply uniformly across all X9241A variants, including X9241AYVIZT1. No derating is required for industrial temperature operation (–40°C to +85°C).

How does the X9241AYVIZT1 handle power-up initialization?

On power-up, the X9241AYVIZT1 automatically loads the contents of Data Register 0 (DR0) into each channel's volatile Wiper Counter Register (WCR), restoring the last-saved wiper position. This behavior is guaranteed provided VCC ramps first and reaches 90% of final value before potentiometer pins are energized, as specified in the Power-up Requirements section of the FN8164 datasheet for X9241AYVIZT1.

What are the absolute maximum wiper current ratings for the X9241AYVIZT1?

For the X9241AYVIZT1's 2kΩ resistor arrays, the absolute maximum wiper current is ±4mA, as defined in the Absolute Maximum Ratings table of the FN8164 datasheet. This limit applies regardless of terminal voltage within the –3.0V to +5V range and is distinct from the ±3mA rating for 10kΩ/50kΩ variants. Exceeding ±4mA risks irreversible damage to internal FET switches.