Renesas X9015US8ZT1

Overview

X9015US8ZT1 from Intersil is a volatile digitally controlled potentiometer (XDCP™) with 32-tap resolution, 10kΩ end-to-end resistance, and 3-wire up/down serial interface. It operates from 2.7V to 5.5V, draws ≤50µA active current, and powers up at Tap #15. It serves as a solid-state replacement for mechanical potentiometers in analog voltage divider and variable resistor configurations.

For engineers reviewing the X9015US8ZT1 datasheet, X9015US8ZT1 pinout, X9015US8ZT1 application, or X9015US8ZT1 equivalent, this device supports precision analog trimming, programmable gain control, and DC bias adjustment in space-constrained industrial and consumer systems requiring low-noise, low-power digital resistance tuning.

Technical Context

The X9015US8ZT1 implements a 5-bit up/down counter driving a 31-resistor string array with make-before-break electronic switches. Wiper position is set by edge-triggered INC input and direction-controlled U/D logic level, with CS enabling selection and standby mode entry.

It features volatile memory-wiper state resets to Tap #15 on power-up-and exhibits ±1 MI absolute linearity and ±0.2 MI relative linearity. Wiper resistance is 200–400Ω at 5V and 400–1000Ω at 2.7V, with 10pF/10pF/25pF terminal capacitances (CH/CL/CW).

Key Specifications

Pinout & Package

Package: 8-lead SOIC (M8.15), RoHS-compliant, narrow-body plastic package with 1.27mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9015US8ZT1, AD5170BRMZ-10 adds nonvolatility and I²C compatibility at the cost of increased firmware complexity, while MCP4017T-103E/OT offers higher resolution and smaller size but lacks dual-ended terminal symmetry and has tighter VCC tolerance.

Availability

X9015US8ZT1 is available at Aetrix Electronics and suitable for audio signal conditioning, DC bias trimming, programmable gain control, and LED current regulation requiring stable component supply and RoHS-compliant packaging.

Supply support for X9015US8ZT1 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 is a precision analog and power management semiconductor provider, now part of Renesas Electronics, delivering high-reliability solutions for industrial, infrastructure, and consumer markets.

The X9015 product line was designed for applications demanding low-noise, low-power, and mechanically robust digital replacement of analog potentiometers-especially where simplicity, predictability, and fast wiper response are prioritized over nonvolatility.

FAQ

What is the default wiper position of the X9015US8ZT1 at power-up?

The X9015US8ZT1 powers up with the wiper at Tap #15, regardless of prior state. This is a fixed, guaranteed behavior defined in the datasheet and applies to every power cycle since the device uses volatile memory. The X9015US8ZT1 does not retain wiper position after power removal, ensuring repeatable initialization for safety-critical or calibration-sensitive circuits.

Does the X9015US8ZT1 support I²C or SPI communication?

No, the X9015US8ZT1 uses only a 3-wire up/down serial interface (CS, INC, U/D) with no clock or data lines-unlike I²C or SPI devices. It relies on edge-triggered INC pulses and level-sensitive U/D control. This simplifies host MCU implementation but precludes multi-device addressing or bidirectional data exchange. The X9015US8ZT1 is not compatible with standard serial protocols and requires dedicated GPIO control.

What is the maximum allowable voltage difference between VH and VL terminals on the X9015US8ZT1?

The X9015US8ZT1 specifies ΔV = |VH – VL| ≤ 5V as an absolute maximum rating. Exceeding this risks permanent damage. In normal operation, both VH and VL must remain within 0V to VCC, and VCC itself must be ≥ VH, VL, and VW. The X9015US8ZT1 is not rated for split-supply or floating-terminal operation beyond these limits.

Can the X9015US8ZT1 be used in a two-terminal variable resistor configuration?

Yes, the X9015US8ZT1 supports two-terminal operation by connecting either RH/VH or RL/VL to the wiper RW/VW and using the remaining fixed terminal with the wiper as the variable resistance element. This configuration is explicitly shown in the datasheet's "Basic Circuits" section and maintains the same 32-tap resolution and linearity specs. The X9015US8ZT1 functions reliably in both two- and three-terminal modes.

Is the X9015US8ZT1 RoHS compliant and what packaging does it use?

Yes, the X9015US8ZT1 is RoHS compliant, using Intersil's Pb-free plus anneal process with 100% matte tin termination and RoHS-compliant molding compounds. It is supplied in an 8-lead narrow-body SOIC package (JEDEC MS-012-AA, POD M8.15), tape-and-reel format (T1 suffix), with 1.27mm lead pitch and specified land pattern dimensions for reliable reflow assembly. The X9015US8ZT1 meets IPC/JEDEC J-STD-020 moisture sensitivity level requirements for Pb-free reflow.