Renesas X9241AYSIZ

Overview

X9241AYSIZ from Intersil is a quad digital controlled potentiometer (XDCP™) IC with nonvolatile storage, 2-wire I²C interface, 64-tap resolution per channel, and -40°C to +85°C industrial temperature range. It integrates four independent 2kΩ resistor arrays in a single SOIC-20 package and supports cascade configuration for extended resistance values. Used in precision analog trimming, sensor calibration, and programmable gain control circuits.

For engineers reviewing the X9241AYSIZ datasheet, X9241AYSIZ pinout, X9241AYSIZ application, or X9241AYSIZ equivalent, this page delivers verified technical context, real-world use cases, pin-level circuit roles, and validated alternative options - all grounded in FN8164 Rev 7.00 and official Intersil specifications.

Technical Context

The X9241AYSIZ implements four monolithic CMOS resistor arrays, each with 63 discrete segments and 64 wiper positions controlled by a volatile 6-bit Wiper Counter Register (WCR). Each array has four nonvolatile Data Registers (DR0–DR3) enabling storage of up to four distinct wiper settings per potentiometer.

It operates as a slave on a standard 2-wire I²C bus (SCL/SDA), supports address selection via A0–A3 inputs, and features cascade mode (CM bit) and wiper disable (DW bit) for flexible multi-array configurations. Power-up automatically loads DR0 into the WCR for deterministic initialization.

Key Specifications

Pinout & Package

Package: 20-lead SOIC (RoHS-compliant, surface-mount). Dimensions per MDP0044 spec: 6.50mm × 6.40mm × 1.20mm height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5204BRZ-20 and MCP42050-I/P, the X9241AYSIZ offers guaranteed nonvolatile retention, I²C compatibility with minimal GPIO usage, and unique cascade capability - making it optimal for industrial systems requiring robust, field-updatable analog calibration without hardware changes.

Availability

X9241AYSIZ is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and embedded audio control requiring stable component supply across long production lifecycles.

Supply support for X9241AYSIZ 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 solutions, now part of Renesas Electronics. Its products serve industrial, infrastructure, and high-reliability embedded markets.

The X9241A family was designed specifically for digitally programmable analog trimming in space- and reliability-constrained systems - emphasizing nonvolatile configurability, multi-channel integration, and industrial-grade operation.

FAQ

What is the exact resistance value and tolerance of each potentiometer in X9241AYSIZ?

The X9241AYSIZ contains four 2kΩ potentiometers with ±20% end-to-end resistance tolerance, as specified in the Analog Specifications table of FN8164 Rev 7.00. This value is fixed per the ordering information row confirming "Pot 0 = 2k, Pot 1 = 2k, Pot 2 = 2k, Pot 3 = 2k" for the Y-series variant. The X9241AYSIZ does not support selectable resistance values - unlike other variants such as X9241AMPZ (2k/10k/10k/50k).

Does X9241AYSIZ support I²C standard-mode or fast-mode timing?

The X9241AYSIZ supports standard-mode I²C only, with maximum SCL clock frequency of 100kHz per AC Electrical Specifications. Its tLOW (4700ns) and tHIGH (4000ns) timings align with standard-mode requirements, and it does not meet fast-mode (400kHz) or fast-mode plus (1MHz) timing budgets. The device uses standard I²C addressing (7-bit slave address 0101xxxx) and ACK polling for nonvolatile writes.

How is power-up behavior defined for X9241AYSIZ, and what happens to wiper positions after reset?

On power-up, the X9241AYSIZ automatically loads the contents of Data Register 0 (DR0) for each potentiometer into its corresponding volatile Wiper Counter Register (WCR), establishing deterministic wiper positions. This behavior is guaranteed per the datasheet's "Power-up Requirements" section. To preserve user-defined settings across power cycles, DR0 must be pre-programmed - which the X9241AYSIZ supports via nonvolatile write commands.

Can X9241AYSIZ be used in cascade mode, and what external connections are required?

Yes, X9241AYSIZ supports cascade mode via the CM bit in the WCR. To cascade POT0 to POT1, connect VL0/RL0 to VH1/RH1; disable the wiper of POT0 (DW=1); and enable only one active wiper (e.g., POT1's VW1/RW1). All four pots can be cascaded to achieve up to 200kΩ using 2kΩ base arrays. External wiring must maintain continuity between VH/RH and VL/RL terminals across linked arrays.

What is the maximum wiper current rating for X9241AYSIZ at 5V supply?

The maximum wiper current for X9241AYSIZ is ±4mA when used with 2kΩ resistor arrays, as specified under "Absolute Maximum Ratings" for "Max Wiper Current for 2k RTOTAL". This limit applies across the full -40°C to +85°C operating range and assumes ≤10V differential (ΔV) between VH and VL pins. Exceeding ±4mA risks accelerated wear or parametric shift due to resistive element stress.