Renesas X9420YV14-2.7

Overview

X9420YV14-2.7 from Intersil is a single-channel, SPI-interface digitally controlled potentiometer (XDCP™) with 64-tap resolution, 2.5kΩ end-to-end resistance, 2.7V to 5.5V VCC supply range, and 14-lead TSSOP package - used for precision analog voltage division in programmable gain amplifiers and offset calibration circuits.

For engineers reviewing the X9420YV14-2.7 datasheet, X9420YV14-2.7 pinout, X9420YV14-2.7 application, or X9420YV14-2.7 equivalent, this page delivers verified electrical specs, SPI interface timing constraints, nonvolatile register behavior, wiper position control logic, and real-world configuration guidance for embedded analog tuning systems.

Technical Context

The X9420YV14-2.7 implements a 63-segment resistor array with CMOS switch-controlled wiper positioning driven by a volatile 6-bit Wiper Counter Register (WCR). It supports direct SPI read/write of wiper position and four nonvolatile 6-bit Data Registers (DR0–DR3), enabling storage of up to four distinct settings with 100-year data retention.

Its dual-supply analog section accepts V+ = +2.7V to +5.5V and V− = −2.7V to −5.5V, allowing true bipolar operation. The device uses register-oriented SPI commands including XFR (transfer between DR and WCR), Increment/Decrement (real-time fine-tuning), and Read Status (WIP bit monitoring), all requiring precise CS edge sequencing and HOLD synchronization.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (4.4mm width), JEDEC MO-153-AC compliant, RoHS-compliant Pb-free plus anneal option available.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9420YV14-2.7, ISL22416 offers greater resolution but sacrifices bipolar analog flexibility, while ISL95311 trades SPI compatibility and dual-rail support for compact packaging and I²C integration - making X9420YV14-2.7 uniquely suited for precision bipolar analog tuning with robust SPI control and nonvolatile multi-setting storage.

Availability

X9420YV14-2.7 is available at Aetrix Electronics and suitable for programmable gain amplifiers, offset voltage calibration circuits, voltage regulator feedback networks, and comparator hysteresis control systems requiring stable component supply and long-term calibration retention.

Supply support for X9420YV14-2.7 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 (now part of Renesas Electronics) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, communications, and computing markets.

The X9420 product line was designed for digitally programmable analog signal conditioning - delivering solid-state reliability, SPI configurability, and nonvolatile storage to replace mechanical potentiometers in automated calibration and adaptive analog systems.

FAQ

What is the power-up behavior of the X9420YV14-2.7?

On power-up, the X9420YV14-2.7 automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR), establishing the default wiper position. This recall requires correct power sequencing: VCC must stabilize first, followed by V+ and V−, then analog terminals (VH, VL, VW). Failure to follow this sequence may result in undefined wiper position.

Does the X9420YV14-2.7 support true bipolar analog operation?

Yes, the X9420YV14-2.7 supports true bipolar analog operation via separate V+ (+2.7V to +5.5V) and V− (−2.7V to −5.5V) supplies. This enables the resistor array to span both positive and negative voltages, allowing use in op-amp circuits requiring rail-to-rail analog signal handling - a capability not found in most digital potentiometers.

How does the HOLD pin function during SPI communication with the X9420YV14-2.7?

The HOLD pin on the X9420YV14-2.7 pauses ongoing SPI transactions without resetting the command sequence. To pause, HOLD must be pulled LOW while SCK is LOW; to resume, HOLD is returned HIGH while SCK remains LOW. This feature allows the host controller to temporarily suspend communication - for example, to service higher-priority interrupts - then continue seamlessly.

Can the X9420YV14-2.7 be used as a two-terminal variable resistor?

Yes, the X9420YV14-2.7 can operate as a two-terminal variable resistor by connecting either VH/RH or VL/RL to the desired reference (e.g., ground or supply) and using VW/RW as the adjustable terminal. In this mode, it functions as a digitally controlled rheostat with 2.5kΩ maximum resistance and 64-step resolution, suitable for current-limiting or bias-setting applications.

What is the endurance rating of the nonvolatile registers in the X9420YV14-2.7?

The nonvolatile Data Registers (DR0–DR3) in the X9420YV14-2.7 are rated for 100,000 data changes per bit per register, with data retention guaranteed for 100 years at +25°C. Each nonvolatile write cycle takes 5ms (typical) to 10ms (max), and the Write-In-Process (WIP) bit must be polled to confirm completion before initiating subsequent writes.