Renesas X93256UV14I-2.7

Overview

X93256UV14I-2.7 from Intersil is a dual digitally controlled potentiometer (XDCP™) implementing two independent 32-tap, nonvolatile resistor arrays with 50kΩ end-to-end resistance, 2.7V–5.5V supply operation, and individual Up/Down control interfaces. It functions as a solid-state replacement for mechanical trimmers in analog biasing, gain adjustment, and LCD contrast circuits.

For engineers reviewing the X93256UV14I-2.7 datasheet, X93256UV14I-2.7 pinout, X93256UV14I-2.7 application, or X93256UV14I-2.7 equivalent, key selection criteria include nonvolatile wiper position retention, ±25% RTOTAL tolerance, 100-year data retention, 200k-cycle endurance, and TSSOP-14 package compatibility with industrial temperature range (-40°C to +85°C).

Technical Context

The X93256UV14I-2.7 integrates two independent 5-bit up/down counters driving 31-resistor arrays, each with dedicated CS, U/D, and INC inputs. Wiper positions are stored in EEPROM and recalled at power-up without external configuration.

Each potentiometer operates as a three-terminal variable resistor with RH/RL terminals spanning 0V to VCC, RW wiper output, and temperature-compensated resistance (±35 ppm/°C). Standby current is ≤4µA per channel, active current is 200µA typical at 3V, and absolute linearity is ±1 minimum increment (MI).

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (4.4mm body width), RoHS-compliant, Pb-free option available (X93256UV14IZ-2.7).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ100 and MCP42050-I/SL, the X93256UV14I-2.7 delivers autonomous operation via hardware-only Up/Down control and guaranteed power-up recall-critical for analog subsystems lacking embedded controllers or requiring deterministic startup behavior.

Availability

X93256UV14I-2.7 is available at Aetrix Electronics and suitable for industrial HMI panels, sensor signal conditioning circuits, and embedded display modules requiring stable component supply, long-term calibration integrity, and RoHS-compliant packaging.

Supply support for X93256UV14I-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, now part of Renesas Electronics, designs high-performance analog and mixed-signal ICs for industrial, computing, and communications markets.

The X93256UV14I-2.7 belongs to Intersil's XDCP™ family-engineered specifically for replacing mechanical potentiometers in analog trimming applications where nonvolatility, hardware control, and industrial temperature resilience are mandatory.

FAQ

What is the maximum operating voltage for the X93256UV14I-2.7?

The X93256UV14I-2.7 operates with a supply voltage (VCC) range of 2.7V to 5.5V. Absolute maximum voltage on any pin-including RH, RL, RW, CS, INC, and U/D-is -1V to +6.5V relative to VSS. Exceeding 5.5V on VCC may cause functional instability or accelerated wear of the nonvolatile memory cells in the X93256UV14I-2.7.

Does the X93256UV14I-2.7 retain its wiper position after power cycling?

Yes, the X93256UV14I-2.7 stores wiper positions in on-chip nonvolatile memory. When CS1 or CS2 is driven HIGH while the corresponding INC input is HIGH, the current wiper value is written to EEPROM. Upon subsequent power-up, the X93256UV14I-2.7 automatically recalls both stored positions-no external controller or initialization sequence is required.

Can the X93256UV14I-2.7 be used as a rheostat or only as a potentiometer?

The X93256UV14I-2.7 supports both configurations. As a three-terminal potentiometer, it uses RH, RL, and RW for voltage division. As a two-terminal rheostat, connect RH to RW (or RL to RW) and use the remaining two pins-enabling variable resistance in current-limiting or gain-setting applications without floating terminals.

What is the wiper resistance specification for the X93256UV14I-2.7?

The X93256UV14I-2.7 specifies a maximum wiper resistance (RW) of 1100Ω. This on-resistance contributes directly to signal path error in precision applications-for example, introducing up to ~2.2% gain error in a 50kΩ feedback network. Designers should account for this in high-accuracy analog loops where the X93256UV14I-2.7 serves as a programmable element.

How many write cycles can the nonvolatile memory in the X93256UV14I-2.7 endure?

The EEPROM memory in the X93256UV14I-2.7 is rated for a minimum of 200,000 data changes per bit. This endurance applies independently to each potentiometer's 5-bit wiper register. At one store operation per hour, the X93256UV14I-2.7 supports over 22 years of daily calibration updates-making it suitable for field-serviceable or user-adjustable equipment.