Renesas X9241AMVZT1

Overview

X9241AMVZT1 from Intersil is a quad digital controlled potentiometer (XDCP™) IC with nonvolatile storage, 2-wire I²C interface, 64-tap resolution per channel, ±3.0V to +5V terminal voltage range, and 20-lead TSSOP package. It functions as four independent digitally adjustable resistors for precision analog signal conditioning in embedded control systems.

For engineers reviewing the X9241AMVZT1 datasheet, X9241AMVZT1 pinout, X9241AMVZT1 application, or X9241AMVZT1 equivalent, this device supports register-oriented wiper control, cascaded resistor array configuration up to 200kΩ, and power-up recall from DR0-critical for calibration retention and system-level analog tuning stability.

Technical Context

The X9241AMVZT1 implements four independent 63-segment resistor arrays with FET-switched wipers controlled by 6-bit volatile Wiper Counter Registers (WCR). Each potentiometer features four nonvolatile Data Registers (DR0–DR3), enabling storage of up to four distinct wiper positions per channel.

It operates as an I²C slave device with fixed 0101xxxx binary address prefix and user-configurable A0–A3 pins. The CM bit in the WCR enables cascading between adjacent arrays, while the DW bit disables wiper output isolation-supporting flexible analog routing without external switches.

Key Specifications

Pinout & Package

Package: 20-lead Thin Shrink Small Outline Package (TSSOP), RoHS-compliant, Pb-free matte tin finish, compatible with reflow soldering per IPC/JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ10 and MCP42010-I/P, the X9241AMVZT1 uniquely delivers quad-channel integration with cascading capability, DR0 power-up recall, and wiper disable-making it optimal for compact, calibration-critical analog subsystems requiring minimal external components and guaranteed startup behavior.

Availability

X9241AMVZT1 is available at Aetrix Electronics and suitable for laser diode bias control, audio channel gain trimming, industrial sensor signal conditioning, and programmable power supply feedback requiring stable component supply and long-term calibration integrity.

Supply support for X9241AMVZT1 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 ICs, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure solutions.

The X9241A product line was designed for embedded analog tuning applications demanding nonvolatile calibration storage, multi-channel integration, and robust I²C-based configuration in space-constrained systems.

FAQ

What is the default power-up behavior of the X9241AMVZT1?

At power-up, the X9241AMVZT1 automatically loads the contents of Data Register 0 (DR0) into each potentiometer's volatile Wiper Counter Register (WCR), restoring the last stored wiper position. This occurs after VCC reaches 90% of its final value and meets the specified ramp rate (0.2–50 V/ms); no host intervention is required for baseline analog state recovery in the X9241AMVZT1.

Can the X9241AMVZT1 be used as a two-terminal variable resistor?

Yes, the X9241AMVZT1 supports two-terminal variable resistor operation by connecting either VH/RH or VL/RL to the wiper VW/RW and leaving the unused terminal unconnected or tied to a fixed potential. The datasheet explicitly confirms this configuration for parameter adjustments and signal processing, and the X9241AMVZT1's ±3.0V to +5V terminal voltage rating ensures compatibility with both unipolar and bipolar bias schemes.

How does cascading work across potentiometers in the X9241AMVZT1?

Cascading in the X9241AMVZT1 is enabled by setting the CM (Cascade Mode) bit in a potentiometer's WCR to '1', which links its VL/RL terminal to the VH/RH terminal of the next higher-order pot (e.g., Pot2 → Pot3). All but one wiper must be disabled via the DW bit, and external wiring must connect VH/RH, VL/RL, and VW/RW terminals accordingly. The X9241AMVZT1 supports up to four-pot cascades, synthesizing resistance values from 4kΩ to 200kΩ.

What is the maximum wiper current rating for each potentiometer in the X9241AMVZT1?

The X9241AMVZT1 specifies maximum wiper current as ±4mA for the 2kΩ pot (Pot 0) and ±3mA for the 10kΩ and 50kΩ pots (Pots 1–3). These ratings apply under continuous DC conditions and derate linearly with ambient temperature above 25°C, as defined in the DCP Wiper Current De-rating Curve. Exceeding these limits risks irreversible damage to the internal FET switches in the X9241AMVZT1.

Does the X9241AMVZT1 support I²C standard-mode or fast-mode timing?

The X9241AMVZT1 supports I²C standard-mode only, with a maximum SCL clock frequency of 100 kHz. Its AC specifications define tLOW ≥ 4700 ns, tHIGH ≥ 4000 ns, and tBUF ≥ 4700 ns - fully compliant with I²C standard-mode timing requirements. It does not meet fast-mode (400 kHz) or fast-mode plus (1 MHz) specifications, and attempting higher clock rates may result in communication failure in the X9241AMVZT1.