Renesas X9400YV24T1

Overview

X9400YV24T1 from Intersil is a quad digitally controlled potentiometer (XDCP™) integrating four independent 64-tap resistor arrays with SPI interface, nonvolatile data registers, and power-on wiper recall. It operates from 2.7V to 5.5V VCC, supports ±5V analog rails (V+/V−), and delivers 40Ω typical wiper resistance at 5V - used for precision voltage divider tuning in programmable gain amplifiers and sensor calibration circuits.

For engineers reviewing the X9400YV24T1 datasheet, X9400YV24T1 pinout, X9400YV24T1 application, or X9400YV24T1 equivalent, key selection criteria include its 24-pin TSSOP package, 10kΩ/2.5kΩ end-to-end resistance options, 100-year data retention, 100,000-cycle endurance per register, and SPI-based wiper control with hardware write protection (WP) and HOLD functionality.

Technical Context

The X9400YV24T1 implements four independent 63-segment resistor arrays, each controlled by a 6-bit volatile Wiper Counter Register (WCR) decoded to select one of 64 tap points. Each array features dedicated VH/RH, VL/RL, and VW/RW terminals, enabling true three-terminal potentiometer or two-terminal variable resistor operation.

It uses standard SPI protocol (CS, SCK, SI, SO) with device addressing via A0/A1 pins, supports global and per-pot transfer between four 6-bit nonvolatile Data Registers (DR0–DR3) and WCRs, and includes hardware write protection (WP) and serial communication pause (HOLD) functions - all operating with <1µA standby current and full compatibility with 2.7V–5.5V system supply.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5204BRUZ10 and MCP42050-I/P, the X9400YV24T1 uniquely combines quad-channel SPI control, ±5V analog rail support, nonvolatile DR0 power-on recall, and 10kΩ/2.5kΩ resistance options - making it optimal for industrial calibration, programmable power supplies, and bipolar signal conditioning where persistence and rail flexibility are critical.

Availability

X9400YV24T1 is available at Aetrix Electronics and suitable for programmable gain amplifiers, sensor calibration systems, voltage regulator feedback networks, and audio channel balancing requiring stable component supply and long-term calibration integrity.

Supply support for X9400YV24T1 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 precision analog and power management semiconductor company, now part of Renesas Electronics, specializing in high-reliability solutions for industrial, automotive, and infrastructure markets.

The X9400 family was designed for digitally reconfigurable analog signal conditioning - targeting applications demanding nonvolatile calibration, low-noise wiper performance, and flexible analog rail operation in compact form factors.

FAQ

What is the package type and lead count for X9400YV24T1?

X9400YV24T1 uses a 24-lead TSSOP package (4.4mm body width) with RoHS-compliant Pb-free plus anneal finish. This package is pin-compatible with other X9400 variants in TSSOP format, including X9400WV24IZ and X9400WV24Z, and supports standard surface-mount reflow profiles per J-STD-020.

Does X9400YV24T1 support bipolar analog signals?

Yes, X9400YV24T1 supports true bipolar operation via dedicated V+ and V− pins rated from −5.5V to +5.5V referenced to VSS. This allows direct connection to ±5V analog signal paths - such as op-amp inputs/outputs or sensor bridges - without external level-shifting circuitry.

How does power-on wiper recall work in X9400YV24T1?

X9400YV24T1 automatically loads the contents of Data Register 0 (DR0) into the Wiper Counter Register (WCR) upon power-up, provided VCC, V+, and V− have stabilized. This ensures repeatable initial wiper position without host intervention - critical for safety-critical or unattended calibration systems.

Can X9400YV24T1 be used as a two-terminal variable resistor?

Yes, X9400YV24T1 can operate as a two-terminal variable resistor by connecting either VH or VL to a fixed potential and using VW as the adjustable terminal. Its 40Ω typical wiper resistance at 5V and 10kΩ/2.5kΩ end-to-end options make it suitable for current-setting and bias adjustment applications.

What is the maximum SPI clock frequency supported by X9400YV24T1?

X9400YV24T1 supports SPI clock frequencies up to 2.0 MHz under recommended operating conditions. Timing parameters including tSU (50 ns setup), tH (50 ns hold), and tV (100 ns output valid) ensure reliable communication with standard microcontroller SPI peripherals without additional buffering.