Renesas X9241AYSZT1

Overview

X9241AYSZT1 from Intersil is a quad digital controlled potentiometer (XDCP™) IC integrating four independent 64-tap nonvolatile resistor arrays with 2-wire I²C-compatible interface, 2kΩ end-to-end resistance per pot, -40°C to +85°C industrial temperature range, and SOIC-20 package. It functions as digitally programmable trimmer in analog signal conditioning paths for precision gain/offset adjustment.

For engineers reviewing the X9241AYSZT1 datasheet, X9241AYSZT1 pinout, X9241AYSZT1 application, or X9241AYSZT1 equivalent, key selection criteria include wiper position recall on power-up from DR0, cascading capability across adjacent pots, ±3mA max wiper current, and 100-year nonvolatile data retention for factory-calibrated settings.

Technical Context

The X9241AYSZT1 implements four independent CMOS resistor arrays, each with 63 segments and 64 tap points controlled by a 6-bit volatile Wiper Counter Register (WCR). Each pot has four nonvolatile Data Registers (DR0–DR3) supporting direct read/write and register-to-WCR transfer.

It uses a standard 2-wire serial interface with fixed 0101xxxx slave address prefix, A0–A3 hardware address inputs, open-drain SDA requiring external pull-up, and SCL clocking up to 100kHz. Cascade mode enables inter-pot connection via CM bit control, while DW bit disables wiper output isolation.

Key Specifications

Pinout & Package

Package: 20-lead SOIC (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 X9241AYSZT1 uniquely delivers quad 2kΩ arrays with cascading, 100-year NV retention, and automatic DR0 power-up recall in a single SOIC-20 package-reducing BOM count and enabling self-contained analog calibration.

Availability

X9241AYSZT1 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, medical instrument calibration, laser diode bias control, and audio level trimming requiring stable component supply across extended temperature operation and long-life nonvolatile settings.

Supply support for X9241AYSZT1 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 designs precision analog and power management ICs for industrial, infrastructure, and high-end consumer markets, emphasizing reliability, low-power operation, and system-level integration.

The X9241A product line delivers digitally programmable resistor solutions for replacing mechanical potentiometers in calibration-critical analog circuits-targeting applications demanding nonvolatile storage, multi-pot integration, and industrial temperature resilience.

FAQ

What is the default wiper position after power-up for X9241AYSZT1?

The X9241AYSZT1 automatically loads the contents of Data Register 0 (DR0) for each potentiometer into its corresponding volatile Wiper Counter Register (WCR) upon power-up. This behavior is hardwired and occurs regardless of prior WCR state, ensuring repeatable analog startup. The DR0 value must be pre-programmed during manufacturing or field calibration to define the intended default setting for X9241AYSZT1.

Can X9241AYSZT1 be used as a two-terminal variable resistor?

Yes, X9241AYSZT1 supports two-terminal variable resistor operation by connecting either VH/RH or VL/RL to the wiper VW/RW and using the remaining terminal as the adjustable node. In this configuration, the effective resistance ranges from near-zero (WCR = 0x00 or 0x3F) to full 2kΩ (WCR = mid-scale), with 63 discrete steps. The wiper current rating remains ±3mA, and nonvolatile storage applies identically.

Does X9241AYSZT1 support I²C standard-mode timing?

Yes, X9241AYSZT1 complies with I²C standard-mode specifications: maximum SCL clock frequency of 100kHz, minimum tLOW = 4700ns, minimum tHIGH = 4000ns, and rise/fall times within 1000ns/300ns limits. It uses standard START/STOP/ACK handshaking and accepts 7-bit slave addresses with fixed 0101 prefix and user-configurable A0–A3 bits-ensuring interoperability with standard I²C masters without protocol translation.

How is cascading implemented between potentiometers in X9241AYSZT1?

Cascading in X9241AYSZT1 is enabled by setting the CM (Cascade Mode) bit in the Wiper Counter Register of the lower-order pot (e.g., Pot 2's WCR bit 7 = 1 to cascade with Pot 3). Externally, VL/RL of the higher pot must connect to VH/RH of the lower pot. Only one wiper remains active (others disabled via DW bit); wiper movement crosses array boundaries automatically during increment/decrement commands-synthesizing total resistance values from 4kΩ to 200kΩ.

What is the maximum allowable voltage across VH and VL terminals for X9241AYSZT1?

The absolute maximum voltage difference |VH/RH − VL/RL| for X9241AYSZT1 is 10V, as specified in Absolute Maximum Ratings. Operating beyond this risks irreversible damage to the internal resistor array or switch FETs. For reliable operation at 5V VCC, the recommended maximum terminal voltage is +5V on VH/RH and -3.0V on VL/RL-ensuring compliance with both differential and single-ended voltage limits stated in the datasheet.