Renesas X9400YP24I-2.7

Overview

X9400YP24I-2.7 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 64-tap resolution per channel, SPI serial interface, 2.7V–5.5V system supply, ±5V analog rail support, and 10kΩ end-to-end resistance. It integrates four independent nonvolatile potentiometers for precision analog trimming in programmable gain stages, offset calibration, and voltage divider control.

For engineers reviewing the X9400YP24I-2.7 datasheet, X9400YP24I-2.7 pinout, X9400YP24I-2.7 application, or X9400YP24I-2.7 equivalent, key selection criteria include wiper resistance (40Ω typ at 5V), power-on recall from DR0, 100-year data retention, 100k-cycle endurance, and dual-supply analog operation (V+/V−).

Technical Context

The X9400YP24I-2.7 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 VH/RH, VL/RL, and VW/RW terminals mirroring mechanical potentiometer behavior.

It supports full SPI protocol compliance-including read/write WCR and Data Registers (DR0–DR3), global transfer, increment/decrement, and status polling-with hardware write protection (WP) and device addressing via A0/A1 pins. Power-up automatically loads DR0 into the WCR for deterministic startup behavior.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (300 mil), RoHS-compliant Pb-free plus anneal finish (MSL 3).

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 X9400YP24I-2.7 uniquely supports independent analog supplies (V+/V−), enabling true bipolar signal conditioning and lower wiper resistance-critical for high-fidelity amplifier feedback networks and precision sensor interfaces.

Availability

X9400YP24I-2.7 is available at Aetrix Electronics and suitable for programmable gain amplifiers, offset calibration circuits, voltage regulator feedback dividers, and comparator hysteresis control requiring stable component supply across industrial temperature ranges and long-life deployments.

Supply support for X9400YP24I-2.7 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 provider, now part of Renesas Electronics, with expertise in high-reliability industrial and infrastructure solutions.

The X9400 series was designed specifically for digitally reconfigurable analog signal conditioning-targeting applications demanding nonvolatile storage, low noise, low power, and robust SPI control in harsh or maintenance-free environments.

FAQ

What is the absolute maximum analog voltage range supported by the X9400YP24I-2.7?

The X9400YP24I-2.7 supports V+ up to +5.5V and V− down to −5.5V, with (V+) − (V−) ≤ 12V. Its VH/VL/VW pins tolerate voltages from V− to V+, enabling true ±5V analog signal handling. This specification is confirmed in the Absolute Maximum Ratings table on page 11 of FN8189 Rev 4.00.

Does the X9400YP24I-2.7 retain wiper position after power cycling?

Yes-the X9400YP24I-2.7 automatically loads the contents of Data Register 0 (DR0) into the Wiper Counter Register (WCR) on power-up. This power-on recall function ensures deterministic analog state restoration without host intervention, as documented in the DESCRIPTION and WCR sections of the datasheet.

Can the X9400YP24I-2.7 be used as a two-terminal variable resistor?

Yes-the X9400YP24I-2.7 supports both three-terminal potentiometer and two-terminal variable resistor configurations. In the latter mode, one end terminal (e.g., VL) is tied to the wiper (VW), leaving VH and VW as the effective variable resistance terminals-explicitly stated in the DESCRIPTION section on page 1.

How many nonvolatile write cycles does the X9400YP24I-2.7 support per data register?

The X9400YP24I-2.7 guarantees 100,000 data changes per bit per register, as specified in the FEATURES list and ENDURANCE AND DATA RETENTION table on page 12. Each of the four 6-bit Data Registers (DR0–DR3) per potentiometer meets this endurance rating.

Is hardware write protection available on the X9400YP24I-2.7?

Yes-the WP (Write Protect) pin provides hardware-level disable of nonvolatile writes to the Data Registers. When WP is held LOW, all DR write and transfer operations are blocked, preventing accidental corruption of calibrated settings-a feature detailed in the PIN DESCRIPTIONS section on page 3.