Renesas X9241AWVZT1

Overview

X9241AWVZT1 from Intersil is a quad digital controlled potentiometer (XDCP™) IC implementing four independent 64-tap nonvolatile resistor arrays with 2-wire I²C-compatible interface, 10kΩ nominal end-to-end resistance per pot, and ±3mA max wiper current - used for precision analog trimming in programmable power supplies and sensor calibration circuits.

For engineers reviewing the X9241AWVZT1 datasheet, X9241AWVZT1 pinout, X9241AWVZT1 application, or X9241AWVZT1 equivalent, this page delivers verified specifications, validated pin functions, confirmed cascade-mode operation, real-world use scenarios, and two rigorously cross-checked alternative parts for industrial-grade analog control design.

Technical Context

The X9241AWVZT1 integrates four monolithic CMOS resistor arrays (63 segments each), each with a volatile 6-bit Wiper Counter Register (WCR) and four nonvolatile Data Registers (DR0–DR3), enabling persistent storage of up to four wiper positions per pot. Power-up automatically loads DR0 into the WCR.

It operates via a bidirectional 2-wire interface (SCL/SDA) with slave address determined by A0–A3 inputs, supports global and individual register transfers, and enables real-time wiper adjustment via Increment/Decrement command - all while maintaining ±1 MI absolute linearity and ±0.2 MI relative linearity across temperature.

Key Specifications

Pinout & Package

20-lead Thin Shrink Small Outline Package (TSSOP), RoHS-compliant, 6.5mm × 4.4mm body, 0.65mm lead pitch, 1.2mm max height.

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 X9241AWVZT1 uniquely delivers four independent nonvolatile pots with automatic DR0 recall, cascade mode, and I²C-compatible 2-wire control - making it optimal for compact, self-calibrating analog subsystems requiring minimal firmware overhead.

Availability

X9241AWVZT1 is available at Aetrix Electronics and suitable for programmable power supplies, sensor signal conditioning, audio balance control, and industrial DAC calibration requiring stable component supply and long-term calibration retention.

Supply support for X9241AWVZT1 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, delivering high-reliability solutions for industrial, infrastructure, and high-end consumer markets.

The X9241A family was designed for digitally programmable analog control in space-constrained, calibration-critical systems - emphasizing nonvolatile persistence, multi-pot integration, and robust I²C interoperability.

FAQ

What is the default wiper position after power-up for the X9241AWVZT1?

The X9241AWVZT1 automatically loads the contents of Data Register 0 (DR0) into each potentiometer's Wiper Counter Register (WCR) upon power-up. This ensures repeatable startup behavior without requiring host initialization. The DR0 value is retained for >100 years and can be pre-programmed during manufacturing or field calibration. All four pots follow this same DR0 recall behavior independently.

Can the X9241AWVZT1 be used as a two-terminal variable resistor?

Yes, the X9241AWVZT1 supports two-terminal (rheostat) operation by connecting either VH/RH or VL/RL to the wiper VW/RW and using the remaining terminal as the adjustable node. Each potentiometer's 10kΩ end-to-end resistance remains valid in this configuration, and wiper current limits (±3mA) apply. The device maintains ±1 MI absolute linearity and 64-tap resolution in rheostat mode.

Does the X9241AWVZT1 support cascading of all four potentiometers?

Yes, the X9241AWVZT1 supports full cascading of all four resistor arrays using the CM (Cascade Mode) bit in each WCR. When CM=1 for POT2, it cascades with POT3; CM=1 for POT1 cascades with POT2, and so on. External connections require linking VL/RL of one pot to VH/RH of the next. Only one wiper remains active (others disabled via DW bit), enabling seamless 256-step adjustment across the combined array.

What is the maximum clock frequency supported by the X9241AWVZT1 I²C interface?

The X9241AWVZT1 supports a maximum SCL clock frequency of 100kHz, compliant with standard-mode I²C. Timing parameters include tLOW ≥4700ns, tHIGH ≥4000ns, and rise/fall times ≤1000ns/300ns respectively. This allows reliable communication with most microcontrollers without requiring high-speed mode hardware, while maintaining noise immunity via built-in 20ns glitch filtering (Ti).

How is nonvolatile write completion confirmed for the X9241AWVZT1?

Nonvolatile write completion is confirmed using ACK polling: after issuing a Write Data Register command and STOP condition, the host immediately sends START + slave address. If the X9241AWVZT1 is still busy (≤10ms internal EEPROM write), it omits ACK; once complete, it responds with ACK. This eliminates need for fixed delay timers and ensures deterministic register update timing in time-critical calibration sequences.