Renesas X9418YV24Z

Overview

X9418YV24Z from Intersil is a dual digitally controlled potentiometer (XDCP™) with 2-wire serial interface, 64-tap resolution per pot, ±2.7V to ±5.5V analog supply range (V+/V−), and 2.5kΩ end-to-end resistance. It integrates two independent resistor arrays, each with volatile wiper counter registers and four nonvolatile data registers, enabling precise digital adjustment in battery-powered instrumentation and precision analog signal conditioning.

For engineers reviewing the X9418YV24Z datasheet, X9418YV24Z pinout, X9418YV24Z application, or X9418YV24Z equivalent, this page delivers verified technical context, validated pin functions, real-world use cases for dual-pot configurations, and confirmed alternative parts with documented functional and parametric differences.

Technical Context

The X9418YV24Z implements two independent 63-segment resistor arrays with CMOS switch-based wiper control, each driven by a 6-bit volatile Wiper Counter Register (WCR) and backed by four 6-bit nonvolatile Data Registers (DR0–DR3). Power-up automatically loads DR0 into the WCR for deterministic startup behavior.

It uses a standard I²C-compatible 2-wire bus (SCL/SDA) with hardware write protection (WP), device address inputs A0–A3 supporting up to 16 devices on one bus, and supports direct wiper read/write, register transfer, and real-time increment/decrement operations with sub-10µs wiper response time after instruction execution.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4mm width), RoHS-compliant Pb-free plus anneal finish (MDP0044 drawing).

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9418YV24Z, AD5242BRUZ10 offers finer resolution but lacks dual-channel independence and bipolar analog capability, while MCP42010-I/P provides dual pots and higher resolution but requires SPI and cannot replace X9418YV24Z in ±5V op-amp circuits without redesign.

Availability

X9418YV24Z is available at Aetrix Electronics and suitable for instrumentation calibration, programmable power supplies, industrial sensor conditioning, and audio signal processing requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for X9418YV24Z 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 (now part of Renesas Electronics) is a semiconductor company specializing in precision analog, power management, and interface ICs for industrial, aerospace, and communications markets.

The X9418 product line was designed for digitally programmable analog signal conditioning-specifically targeting replacement of mechanical trimmers in high-reliability, field-calibratable systems where nonvolatile storage and bipolar operation are essential.

FAQ

What is the operating temperature range for the X9418YV24Z?

The X9418YV24Z is rated for industrial temperature operation from −40°C to +85°C, as confirmed in the Ordering Information table on page 2 of FN8194 Rev 2.00. This range applies specifically to the YV24Z variant with TSSOP packaging and Pb-free finish, making it suitable for deployment in harsh-environment industrial controllers and outdoor instrumentation.

Does the X9418YV24Z support true bipolar analog operation?

Yes, the X9418YV24Z supports true bipolar analog operation via separate V+ and V− supply pins, rated from −5.5V to −2.7V on V+ and +2.7V to +5.5V on V−. This allows direct connection to ±5V op-amp stages without level-shifting, unlike unipolar DCPs such as the MCP42010. The datasheet confirms this in the Analog Supplies section (page 2) and Absolute Maximum Ratings (page 11).

How many nonvolatile memory locations does the X9418YV24Z provide per potentiometer?

The X9418YV24Z provides four 6-bit nonvolatile Data Registers (DR0–DR3) for each of its two potentiometers-eight registers total. As stated on page 1 of the datasheet, "Store as many as Four Positions per Potentiometer," and page 8 confirms DR0 is loaded into the Wiper Counter Register at power-up, enabling persistent multi-point calibration storage without external memory.

Can the X9418YV24Z be used as a two-terminal variable resistor?

Yes, the X9418YV24Z can be configured as a two-terminal variable resistor by connecting either VH/RH or VL/RL to the wiper VW/RW, as explicitly stated in the DESCRIPTION section (page 1): "The XDCP can be used as a three-terminal potentiometer or as a two-terminal variable resistor." This mode is commonly used for programmable gain control and LED current limiting in both potentiometers.

What is the maximum clock frequency supported by the X9418YV24Z 2-wire interface?

The X9418YV24Z supports a maximum clock frequency of 400kHz on its 2-wire (I²C-compatible) interface, as specified in the AC TIMING table on page 13 of FN8194 Rev 2.00. This allows fast register updates-e.g., wiper position changes complete in under 10µs-and is compatible with standard fast-mode I²C controllers found in most industrial microcontrollers.