Renesas X9241AYSZ

Overview

X9241AYSZ from Intersil is a quad digital controlled potentiometer (XDCP™) IC with nonvolatile storage, 2-wire I²C interface, 64-tap resolution per channel, and 2kΩ end-to-end resistance per potentiometer. It operates from 0°C to +70°C in 20-lead SOIC packaging and is used for precision analog trimming, gain/offset calibration, and programmable biasing in industrial sensor signal conditioning circuits.

For engineers reviewing the X9241AYSZ datasheet, X9241AYSZ pinout, X9241AYSZ application, or X9241AYSZ equivalent, this device supports register-oriented wiper control, cascaded resistor array configuration up to 8kΩ, and power-up recall from DR0-critical for repeatable analog setup in embedded instrumentation and factory-calibrated modules.

Technical Context

The X9241AYSZ implements four independent 63-element CMOS resistor arrays, each with a volatile 6-bit Wiper Counter Register (WCR) and four nonvolatile Data Registers (DR0–DR3). Wiper position is selected via decoded WCR outputs controlling FET switches across the array.

It uses a standard 2-wire I²C-compatible interface with slave address 0101xxxx₂, supports ACK polling during 10ms nonvolatile writes, and enables cascade mode via bit-7 of the WCR to link adjacent arrays-e.g., Pot 0 to Pot 1-for extended resistance values while maintaining single-wiper control.

Key Specifications

Pinout & Package

20-lead SOIC package (RoHS-compliant, Pb-free matte tin finish), 7.5mm × 12.8mm body, 1.20mm max height, 0.65mm lead pitch.

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 X9241AYSZ uniquely delivers four 2kΩ pots with nonvolatile DR0 recall and hardware-supported cascade mode-making it optimal for compact, self-initializing analog front-ends requiring multi-point calibration and extended resistance ranges.

Availability

X9241AYSZ is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable gain amplifiers, power supply trim, and audio channel balance control requiring stable component supply and long-term calibration integrity.

Supply support for X9241AYSZ 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, serving industrial, infrastructure, and high-end consumer markets with high-reliability, feature-rich solutions.

The X9241A product line was designed for digitally programmable analog signal conditioning-targeting factory-calibrated sensors, test equipment, and embedded systems needing nonvolatile, multi-channel resistance tuning.

FAQ

What is the end-to-end resistance value of each potentiometer in the X9241AYSZ?

The X9241AYSZ has a nominal end-to-end resistance of 2kΩ for each of its four potentiometers. This value is fixed per the ordering information table and confirmed in the Absolute Maximum Ratings section. The resistance tolerance is ±20%, and the temperature coefficient is ±300 ppm/°C-suitable for stable operation in commercial-temperature instrumentation applications. Each potentiometer maintains this 2kΩ value independently.

Does the X9241AYSZ support power-up wiper recall, and how does it work?

Yes, the X9241AYSZ automatically loads the contents of Data Register 0 (DR0) into the Wiper Counter Register (WCR) at power-up. This ensures a known, repeatable wiper position without host intervention. The recall occurs after VCC reaches 90% of its final value and meets the specified ramp rate (0.2–50 V/ms). DR0 must be pre-programmed during manufacturing or field calibration to enable reliable startup behavior in the X9241AYSZ.

Can multiple X9241AYSZ devices share the same I²C bus, and how is addressing handled?

Yes, up to 16 X9241AYSZ devices can share one I²C bus. Addressing is controlled by the A0–A3 pins, which set the four least-significant bits of the 8-bit slave address (fixed prefix 0101₂). Each device must have a unique A0–A3 combination. The X9241AYSZ responds only when its full 8-bit address matches the transmitted address-enabling scalable multi-device configurations in complex analog subsystems using the X9241AYSZ.

What is the maximum wiper current rating for the X9241AYSZ, and how does it vary with resistance?

The X9241AYSZ supports a maximum wiper current of ±4mA when configured with 2kΩ end-to-end resistance. This is specified in the Absolute Maximum Ratings table and applies across the full operating temperature range. For higher-resistance variants (e.g., 10kΩ or 50kΩ), the limit drops to ±3mA. Exceeding these values risks irreversible damage to the internal FET switches and resistor elements in the X9241AYSZ.

How does cascade mode function in the X9241AYSZ, and what external connections are required?

In cascade mode, the X9241AYSZ links two adjacent potentiometer arrays (e.g., Pot 0 to Pot 1) by connecting VL/RL of the higher-order pot to VH/RH of the lower-order pot. The CM bit (bit 7 of WCR) enables cascading, and only one wiper remains active (others disabled via DW bit). This yields combined resistance (e.g., 4kΩ) with unified wiper control-requiring no additional external components beyond the inter-array wiring for the X9241AYSZ.