Renesas X9241AYVIT1

Overview

X9241AYVIT1 from Intersil is a quad digital controlled potentiometer (XDCP™) IC integrating four nonvolatile, low-power, 2-wire interface potentiometers with 64-tap resolution per channel. Each potentiometer features 2 kΩ end-to-end resistance, -40°C to +85°C industrial temperature range, and cascading capability for extended resistance values. It serves as a precision programmable resistor in analog front-end calibration circuits.

For engineers reviewing the X9241AYVIT1 datasheet, X9241AYVIT1 pinout, X9241AYVIT1 application, or X9241AYVIT1 equivalent, this device supports register-oriented 2-wire control, stores up to four wiper positions per pot, enables wiper increment/decrement for fine tuning, and provides 100-year data retention in nonvolatile registers - critical for factory-trimmed sensor signal chains and power supply feedback networks.

Technical Context

The X9241AYVIT1 implements four independent resistor arrays, each composed of 63 discrete segments with FET-switched wiper taps controlled by a 6-bit volatile Wiper Counter Register (WCR). Power-up automatically loads DR0 into each WCR, ensuring repeatable startup behavior without host intervention.

Its 2-wire (I²C-compatible) interface uses open-drain SDA with SCL clocking, supporting start/stop conditions, ACK polling during nonvolatile writes (tWR = 10 ms), and instruction-based operations including Read/Write WCR, Data Register transfers, and global cascaded updates. Cascade mode is enabled via bit-7 (CM) of the WCR, allowing inter-pot interconnection for 4 kΩ–200 kΩ composite resistance values.

Key Specifications

Pinout & Package

Package: 20-lead TSSOP (RoHS-compliant, Pb-free, thin shrink small outline).

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9241AYVIT1, AD5242BRUZ10 offers finer 256-step control but halves channel count and removes cascading; MCP42010-I/P trades nonvolatility and quad integration for SPI compatibility and wider supply range - making X9241AYVIT1 uniquely suited for compact, self-contained, multi-channel industrial trimming.

Availability

X9241AYVIT1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply design, and embedded audio level control requiring stable component supply and long-term calibration integrity.

Supply support for X9241AYVIT1 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, with deep expertise in high-reliability industrial and infrastructure ICs.

The X9241A family was designed specifically for digitally programmable analog trimming in space-constrained, calibration-critical systems - emphasizing nonvolatile configuration retention, multi-channel integration, and robust 2-wire interoperability.

FAQ

What is the resistance value and tolerance of each potentiometer in the X9241AYVIT1?

The X9241AYVIT1 contains four 2 kΩ potentiometers with ±20% end-to-end resistance tolerance (RTOTAL). This value is fixed per device variant and confirmed in the Ordering Information table on page 2 of FN8164 Rev 7.00. The 2 kΩ value is optimized for low-current, low-noise applications such as op-amp gain setting and sensor offset compensation.

Does the X9241AYVIT1 support true I²C communication, and what are its voltage-level requirements?

Yes, the X9241AYVIT1 supports standard I²C protocol with open-drain SDA and active-low SCL. It operates at 5 V ±10%, with VIH ≥ 2.0 V and VIL ≤ 0.8 V. Pull-up resistors are required on both lines; typical values range from 1.8 kΩ to 10 kΩ depending on bus capacitance and speed (max fSCL = 100 kHz).

How does the nonvolatile memory in the X9241AYVIT1 retain wiper settings, and what is its endurance?

The X9241AYVIT1 uses EEPROM-like nonvolatile registers (DR0–DR3 per pot) with guaranteed 100,000 write/erase cycles per bit and 100-year data retention at +85°C. Settings are preserved across power cycles, and power-up automatically loads DR0 into each WCR - ensuring deterministic startup behavior without host initialization.

Can the four potentiometers in the X9241AYVIT1 be cascaded, and how is this configured?

Yes, the X9241AYVIT1 supports cascading via the Cascade Mode (CM) bit in the Wiper Counter Register. Setting bit-7 = 1 in any WCR connects that pot's VL/RL to the next higher pot's VH/RH. External wiring is required, and only one wiper remains active; the others must be disabled via the DW bit to prevent shorts.

What is the maximum wiper current rating for the X9241AYVIT1, and how does it relate to the 2 kΩ resistance?

The X9241AYVIT1 supports ±4 mA maximum wiper current for 2 kΩ arrays, derived from its absolute maximum rating of ±4 mA at 5 V supply. This corresponds to a maximum voltage differential of 8 V across the wiper path (per Ohm's Law), aligning with the ±3.0 V to +5 V terminal voltage limits specified in the Absolute Maximum Ratings table.