Renesas X93256WV14IZ-2.7T1

Overview

X93256WV14IZ-2.7T1 from Intersil is a dual digitally controlled potentiometer (XDCP™) implementing two independent 32-tap, 12.5kΩ resistor arrays with nonvolatile wiper position storage, CMOS-compatible Up/Down control interfaces, and operation from 2.7V to 5.5V - used for precision analog trimming in LCD bias control, sensor calibration, and audio gain adjustment circuits.

For engineers reviewing the X93256WV14IZ-2.7T1 datasheet, X93256WV14IZ-2.7T1 pinout, X93256WV14IZ-2.7T1 application, or X93256WV14IZ-2.7T1 equivalent, key selection criteria include its 12.5kΩ end-to-end resistance, 31-element resistor array per channel, ±35ppm/°C temperature coefficient, nonvolatile recall on power-up, and Pb-free 14-lead TSSOP package.

Technical Context

The X93256WV14IZ-2.7T1 integrates two independent 5-bit up/down counters driving 32-position decoder networks across segmented resistor arrays; each wiper position is stored in EEPROM and recalled at power-on. Control logic responds to negative-edge-triggered INC inputs synchronized with U/D direction and CS-select enable signals.

Each potentiometer operates as a three-terminal variable resistor with RH/RL terminals spanning 0–VCC, RW wiper output referenced to VSS, and wiper resistance ≤1100Ω. Standby current is ≤4µA per channel, active current is 200µA typical at 3V, and absolute linearity error is ±1 minimum increment (MI), where MI = RTOT/31 = 403Ω.

Key Specifications

Pinout & Package

Packaged in a Pb-free 14-lead TSSOP (4.4mm body width, M14.173 drawing), the X93256WV14IZ-2.7T1 features dual independent potentiometer channels with dedicated control pins and fully isolated RH/RL/RW terminals per channel.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ10 and MCP42010-I/P, the X93256WV14IZ-2.7T1 offers deterministic 12.5kΩ resistance, guaranteed power-up recall without host interaction, and simpler GPIO-based control - making it optimal for cost-sensitive, low-pin-count designs requiring robust analog trimming without serial bus overhead.

Availability

X93256WV14IZ-2.7T1 is available at Aetrix Electronics and suitable for LCD contrast control, sensor calibration, audio gain adjustment, power supply feedback trimming, and industrial HMI applications requiring stable component supply and long-term obsolescence management.

Supply support for X93256WV14IZ-2.7T1 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, now part of Renesas Electronics, designs high-performance analog and mixed-signal ICs for industrial, computing, and communications markets.

The X93256 series belongs to Intersil's XDCP™ (eXternally Controlled Digital Potentiometer) family, engineered for replacing mechanical potentiometers in precision analog trimming applications where reliability, nonvolatility, and low-power operation are essential.

FAQ

What is the end-to-end resistance value of the X93256WV14IZ-2.7T1?

The X93256WV14IZ-2.7T1 has an end-to-end resistance (RTOT) of 12.5kΩ, with a tolerance of ±25% across temperature and process variation. This value is confirmed in the "Potentiometer Characteristics" table on page 3 of the FN8188 datasheet under the "W option" row. The 12.5kΩ rating applies to both integrated potentiometer channels and defines the maximum resistance between RH and RL terminals for each channel.

Does the X93256WV14IZ-2.7T1 retain wiper settings after power loss?

Yes, the X93256WV14IZ-2.7T1 stores wiper positions in nonvolatile EEPROM memory with 100-year data retention and 200,000 write cycles. Upon power-up, the device automatically recalls the last stored wiper positions for both channels - a core feature documented in the General Description and Principles of Operation sections of the FN8188 datasheet.

What package type and lead count does the X93256WV14IZ-2.7T1 use?

The X93256WV14IZ-2.7T1 uses a Pb-free 14-lead Thin Shrink Small Outline Plastic (TSSOP) package, per drawing M14.173. Its dimensions are 4.4mm body width × 5.0mm length × 1.05mm height, with 0.65mm lead pitch. This is explicitly stated in the Ordering Information table and Package Mechanical Drawing on page 7 of the FN8188 datasheet.

How many wiper positions does each potentiometer in the X93256WV14IZ-2.7T1 support?

Each potentiometer in the X93256WV14IZ-2.7T1 supports 32 discrete wiper positions, implemented via a 5-bit up/down counter and 31-resistor-element array. This resolution is specified in the Features section ("32 wiper tap points per potentiometer") and confirmed in the Block Diagram and Principles of Operation on pages 2 and 5 of the FN8188 datasheet.

What is the supply voltage range for reliable operation of the X93256WV14IZ-2.7T1?

The X93256WV14IZ-2.7T1 operates reliably from 2.7V to 5.5V, as defined in the Recommended Operating Conditions table on page 3 of the FN8188 datasheet. Operation below 2.7V may cause incomplete EEPROM writes or erratic counter behavior, while exceeding 5.5V violates Absolute Maximum Ratings and risks permanent damage.