Renesas X9116WS8IZT1

Overview

X9116WS8IZT1 from Intersil is a solid-state, nonvolatile digitally controlled potentiometer (XDCP™) designed for precision analog trim applications. It provides 16 wiper positions across a 10kΩ linear resistor array, operates from 2.7V to 5.5V, consumes <1µA in standby, and retains wiper position in EEPROM across power cycles. It replaces mechanical trimmers in voltage divider, gain-setting, and offset calibration circuits.

For engineers reviewing the X9116WS8IZT1 datasheet, X9116WS8IZT1 pinout, X9116WS8IZT1 application, or X9116WS8IZT1 equivalent, key selection criteria include its 3-wire up/down serial interface, ±1mA wiper current rating, 200Ω typical wiper resistance at 5V, ratiometric temperature coefficient of ±20ppm/°C, and SOIC-8 packaging with industrial temperature range (–40°C to +85°C).

Technical Context

The X9116WS8IZT1 implements a 4-bit counter driving a 15-segment resistor ladder via CMOS "make-before-break" switches, enabling glitch-free wiper transitions. Its nonvolatile memory stores the last wiper position using EEPROM technology with 100,000 write cycles and 100-year data retention.

Operation relies on three digital control inputs-CS (chip select), U/D (direction), and INC (negative-edge-triggered increment)-with timing-critical parameters including tIW (INC-to-VW change: 1–5µs), tCPH (store cycle deselect time: 10ms), and tWR (EEPROM store duration: 5–10ms). The device requires no power-up sequencing constraints beyond VCC ≥ VH/VL/VW.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (M8.15), RoHS-compliant Pb-free plus anneal finish, moisture sensitivity level (MSL) 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5171BRMZ-10 and MCP41010-I/P, the X9116WS8IZT1 uniquely combines nonvolatile storage, make-before-break switching, and ultra-low standby current in a minimal 3-wire interface-making it optimal for self-contained, maintenance-free analog trimming where reliability and simplicity are prioritized over resolution or bus compatibility.

Availability

X9116WS8IZT1 is available at Aetrix Electronics and suitable for DC power supply trimming, audio tone control, instrumentation offset calibration, and temperature sensor linearization requiring stable component supply across industrial temperature ranges and long product lifecycles.

Supply support for X9116WS8IZT1 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) is a U.S.-based analog and mixed-signal semiconductor company focused on high-performance power management, precision analog, and interface solutions.

The X9116WS8IZT1 belongs to Intersil's XDCP™ (Digitally Controlled Potentiometer) family, engineered specifically to replace electromechanical trimmers in applications demanding long-term stability, shock/vibration immunity, and programmable calibration without MCU intervention.

FAQ

What is the maximum wiper current rating for the X9116WS8IZT1?

The X9116WS8IZT1 supports a maximum wiper current of ±1mA, as specified in the DC electrical characteristics table. This rating applies across the full operating temperature range (–40°C to +85°C) and ensures reliable operation when used in voltage divider configurations with load impedances ≥10kΩ. Exceeding this current may cause drift or permanent damage to the internal CMOS switches.

Does the X9116WS8IZT1 require external components to operate?

No, the X9116WS8IZT1 operates autonomously with only VCC, VSS, and three digital control signals (CS, U/D, INC). No external pull-ups, decoupling capacitors beyond standard 0.1µF VCC–VSS placement, or EEPROM support circuitry is required. Its integrated nonvolatile memory and internal logic eliminate dependency on host microcontrollers for basic trim functionality.

How is wiper position stored in nonvolatile memory on the X9116WS8IZT1?

Wiper position is stored in EEPROM when CS transitions from LOW to HIGH while INC is held HIGH. This store command consumes ~400µA for 5–10ms (tWR), after which the device automatically enters standby mode (<1µA). The stored value is automatically recalled at next power-up, ensuring consistent startup behavior without host intervention.

Can the X9116WS8IZT1 be used in a 3.3V system?

Yes, the X9116WS8IZT1 supports VCC from 2.7V to 5.5V, making it fully compatible with 3.3V logic and analog systems. At 3.3V, wiper resistance increases to 400–1000Ω (per datasheet Table "RW Wiper resistance"), and active current remains below 50µA-enabling direct interfacing with 3.3V MCUs without level shifters.

What is the absolute linearity error specification for the X9116WS8IZT1?

The X9116WS8IZT1 has an absolute linearity error of ±1 MI (Minimum Increment), where MI = RTOTAL/15 ≈ 667Ω. This translates to ±667Ω deviation between actual and ideal wiper voltage at any tap position, corresponding to ±1% of full-scale resistance. This specification is guaranteed over the industrial temperature range and ensures predictable performance in precision calibration tasks.