Renesas X93256WV14IZ-2.7

Overview

X93256WV14IZ-2.7 from Intersil is a dual digitally controlled potentiometer (XDCP™) implementing two independent 12.5kΩ resistor arrays with 32 wiper positions each, nonvolatile EEPROM storage for power-up recall, and CMOS-compatible Up/Down control interfaces - used for precision analog trimming in LCD bias circuits, sensor signal conditioning, and programmable gain stages.

For engineers reviewing the X93256WV14IZ-2.7 datasheet, X93256WV14IZ-2.7 pinout, X93256WV14IZ-2.7 application, or X93256WV14IZ-2.7 equivalent, key selection considerations include end-to-end resistance tolerance (±25%), wiper resistance (1100Ω), standby current (4µA max per pot), temperature coefficient (±35ppm/°C), and Pb-free TSSOP-14 packaging compliant with RoHS and IPC/JEDEC J-STD-020 reflow standards.

Technical Context

The X93256WV14IZ-2.7 integrates two independent 5-bit up/down counters driving 31-element resistor arrays, each with dedicated CS/U/D/INC control lines and nonvolatile memory for wiper position retention. Each potentiometer operates as a three-terminal variable resistor with RH/RL terminals spanning 0 to VCC and RW as the movable tap.

Control logic uses negative-edge-triggered INC inputs and level-sensitive U/D direction signals; store operations occur on CS rising edge while INC is HIGH, initiating EEPROM write cycles requiring 5–10ms. The device supports 2.7V to 5.5V supply operation with active current of 200µA typical per potentiometer and absolute linearity error limited to ±1 minimum increment (MI).

Key Specifications

Pinout & Package

Package: 14-lead Thin Shrink Small Outline Plastic (TSSOP), 4.4mm body width, RoHS-compliant matte tin e3 termination, MSL Level 3 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X93256WV14IZ-2.7, AD5242BRUZ10 offers finer resolution but lacks dual-pot autonomy, while MCP42010-I/P provides SPI flexibility at the cost of nonvolatile retention - making X93256WV14IZ-2.7 optimal for self-contained, low-microcontroller-footprint analog trimming.

Availability

X93256WV14IZ-2.7 is available at Aetrix Electronics and suitable for LCD display biasing, sensor calibration, programmable gain amplification, and power supply feedback trimming requiring stable component supply and long-term calibration integrity.

Supply support for X93256WV14IZ-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 with ISO9001-certified manufacturing.

The X93256 family delivers digitally programmable analog trimming for applications demanding calibration persistence, low power, and mechanical potentiometer replacement without firmware overhead.

FAQ

What is the resistance tolerance and temperature coefficient of the X93256WV14IZ-2.7?

The X93256WV14IZ-2.7 has an end-to-end resistance tolerance of ±25% and a temperature coefficient of ±35ppm/°C across the -40°C to +85°C industrial range. These specifications ensure predictable voltage division performance in environments with thermal cycling, such as industrial control panels and automotive cabin electronics where the X93256WV14IZ-2.7 is commonly deployed for bias trimming.

How does the nonvolatile memory in the X93256WV14IZ-2.7 retain wiper positions after power loss?

The X93256WV14IZ-2.7 stores wiper positions in on-chip EEPROM memory that retains data for 100 years and withstands 200,000 write cycles. When CS1 or CS2 transitions HIGH while the corresponding INC input is HIGH, the current counter value is written to nonvolatile memory. On subsequent power-up, the stored values are automatically recalled to set RW1 and RW2 positions - eliminating need for external initialization in the X93256WV14IZ-2.7.

Can both potentiometers in the X93256WV14IZ-2.7 be adjusted simultaneously without interference?

Yes, the X93256WV14IZ-2.7 features fully independent control paths: CS1/U/D1/INC1 for Potentiometer 1 and CS2/U/D2/INC2 for Potentiometer 2. Signals can be asserted concurrently, allowing simultaneous wiper movement. There is no shared resource contention or timing dependency between the two channels, enabling true parallel analog trimming in applications like dual-channel PGA configuration using the X93256WV14IZ-2.7.

What is the maximum allowable voltage across RH and RL terminals of the X93256WV14IZ-2.7?

The RH and RL terminals of the X93256WV14IZ-2.7 must remain within 0V to VCC, with VCC rated from 2.7V to 5.5V. Absolute maximum voltage on any RH or RL pin relative to VSS is -1V to +6.5V, but operational use must keep terminal voltages strictly between VSS and VCC to prevent damage or parametric shift. This constraint applies individually to RH1/RL1 and RH2/RL2 in the X93256WV14IZ-2.7.

Does the X93256WV14IZ-2.7 require external pull-up or pull-down resistors on its control pins?

No external pull-up or pull-down resistors are required for CS, U/D, or INC inputs of the X93256WV14IZ-2.7. Each CS pin has an internal 30kΩ pull-up to VCC, ensuring default HIGH (standby) state during power-up. INC and U/D inputs have ±1µA leakage current and accept standard CMOS logic levels (VIL ≤ 0.1×VCC, VIH ≥ 0.7×VCC), making them compatible with direct microcontroller GPIO drive without additional biasing in the X93256WV14IZ-2.7.