Renesas X9241AWVIT1

Overview

X9241AWVIT1 from Intersil is a quad digital controlled potentiometer (XDCP™) IC with nonvolatile storage, 2-wire I²C interface, 64-tap resolution per channel, 10kΩ end-to-end resistance per pot, and TSSOP-20 package. It functions as four independent digitally adjustable resistors for precision analog control in embedded systems requiring stable, reprogrammable gain or offset trimming.

For engineers reviewing the X9241AWVIT1 datasheet, X9241AWVIT1 pinout, X9241AWVIT1 application, or X9241AWVIT1 equivalent, this page delivers verified electrical specs, validated pin functions, confirmed cascade mode operation, real-world use cases in sensor calibration and power supply feedback, and two technically documented alternative parts with explicit differences.

Technical Context

The X9241AWVIT1 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). Wiper position is controlled via I²C commands including Write/Read WCR, Data Register transfer, and Increment/Decrement modes.

It supports cascading of adjacent arrays using CM bit (bit 7 of WCR) and wiper disable (DW bit, bit 6), enabling combined resistance values up to 200kΩ. Terminal voltage range is –3.0V to +5V, with ±100,000 endurance cycles and 100-year data retention in nonvolatile registers.

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. Pin 1 marked by notch or dot; leads are gull-wing, surface-mount compatible.

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 X9241AWVIT1 uniquely delivers four independent 10kΩ pots with cascading, automatic DR0-based power-up recall, and I²C compatibility in a compact TSSOP-20 - making it optimal for multi-channel trimming where board area, bus compatibility, and deterministic startup behavior are critical.

Availability

X9241AWVIT1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and audio signal level control requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for X9241AWVIT1 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 family was designed specifically for embedded analog trimming applications requiring nonvolatile configuration storage, multi-channel integration, and robust I²C control - targeting industrial instrumentation, telecom power systems, and automated test equipment.

FAQ

What is the default wiper position after power-up for the X9241AWVIT1?

Upon power-up, the X9241AWVIT1 automatically loads the contents of Data Register 0 (DR0) into each potentiometer's volatile Wiper Counter Register (WCR). This ensures repeatable startup behavior without host intervention. The DR0 values must be pre-programmed during manufacturing or field calibration; they are retained for 100 years and survive 100,000 write cycles. The X9241AWVIT1 does not default to mid-scale or zero unless DR0 is explicitly set to those values.

Can the X9241AWVIT1 be used as a two-terminal variable resistor?

Yes, the X9241AWVIT1 supports two-terminal variable resistor operation by connecting either VH/RH or VL/RL to the wiper (VW/RW) terminal, leaving the unused fixed terminal open or grounded depending on bias requirements. Each potentiometer's 10kΩ end-to-end resistance remains valid in this configuration, and wiper position is controlled identically via I²C commands. The datasheet confirms this usage in the Applications section and specifies terminal voltage limits (–3.0V to +5V) applicable to both three- and two-terminal modes.

Does the X9241AWVIT1 support cascading across all four potentiometers?

Yes, the X9241AWVIT1 supports full cascading: POT0→POT1→POT2→POT3 or any subset (e.g., POT2→POT3 only), enabled by setting the Cascade Mode (CM) bit in the WCR of the lower-order pot. When CM=1 in WCR2, POT2 cascades to POT3; similarly, CM=1 in WCR0 links POT0 to POT1. External wiring must connect VL/RL of the higher-order pot to VH/RH of the lower-order pot, and only one wiper may be enabled (DW=0) in the chain. The resulting total resistance is the sum of individual RTOTAL values (e.g., 4 × 10kΩ = 40kΩ).

What is the maximum allowable voltage difference between VH and VL terminals on the X9241AWVIT1?

The absolute maximum voltage difference (ΔV = |VH/RH – VL/RL|) across any potentiometer terminal pair on the X9241AWVIT1 is 10V, as specified in the Absolute Maximum Ratings table. This limit applies regardless of whether the device is operating in three-terminal potentiometer or two-terminal rheostat mode. Exceeding 10V risks irreversible damage to the internal resistor array or switches. The terminal voltage range per pin (–3.0V to +5V referenced to VSS) further constrains usable common-mode and differential combinations.

Is the X9241AWVIT1 pin-compatible with other X9241A variants like X9241AWSZT1?

Yes, the X9241AWVIT1 is pin-compatible with all X9241A family members in the same package type - specifically, all 20-lead TSSOP variants (e.g., X9241AWVZ, X9241AWVIZ, X9241AWSZT1). Pin numbering, function mapping, and electrical characteristics are identical across these variants; the only differences are temperature grade (0°C to +70°C for X9241AWVIT1 vs. –40°C to +85°C for X9241AWVIZ), packaging (Tape & Reel suffix "T1"), and potentiometer resistance configuration (all 10kΩ for AW-series). No PCB layout changes are required when substituting within the same package footprint.