Renesas X9015WS8Z-2.7T1

Overview

X9015WS8Z-2.7T1 from Intersil is a volatile, low-noise, digitally controlled potentiometer (XDCP™) with 32-tap resolution, 10kΩ end-to-end resistance, and 2.7V–5.5V supply operation. It functions as a solid-state replacement for mechanical potentiometers in analog trimming circuits, featuring a three-wire up/down serial interface, 50µA max active current, and wiper position reset to Tap #15 at power-up. Used in precision voltage divider and variable resistor configurations.

For engineers reviewing the X9015WS8Z-2.7T1 datasheet, X9015WS8Z-2.7T1 pinout, X9015WS8Z-2.7T1 application, or X9015WS8Z-2.7T1 equivalent, key selection criteria include its 2.7V minimum VCC support, SOIC-8 package compatibility, ±1 MI absolute linearity, 200–400Ω wiper resistance at 5V, and standby current of ≤1µA - critical for battery-powered and low-power analog control systems.

Technical Context

The X9015WS8Z-2.7T1 implements a 5-bit up/down counter driving a 31-resistor ladder array via make-before-break electronic switches. Wiper position is updated on falling edges of the INC input, with direction controlled by the U/D logic level while CS is asserted low.

It operates in volatile mode only - no nonvolatile storage - and resets to Tap #15 on power-up. The device supports ratiometric operation with ±20 ppm/°C ratiometric temperature coefficient and maintains stable performance across 0°C to +70°C commercial temperature range.

Key Specifications

Pinout & Package

Package: 8-lead narrow-body SOIC (JEDEC MS-012-AA compliant), RoHS-compliant Pb-free plus anneal finish, M8.15 outline.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9015WS8Z-2.7T1, X9015US8Z-2.7T1 offers identical functionality in the same SOIC-8 package with updated manufacturing status, while AD5243BRMZ10 trades simple up/down control for higher resolution and I²C flexibility - requiring PCB redesign and firmware changes.

Availability

X9015WS8Z-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, portable audio equipment, and programmable power supply trimming requiring stable component supply and legacy design continuity.

Supply support for X9015WS8Z-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 is a precision analog and power management semiconductor provider, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure solutions.

The X9015 product line delivers volatile digital potentiometers optimized for low-noise, low-power analog trimming in cost-sensitive, space-constrained applications where EEPROM endurance or write time is unnecessary.

FAQ

What is the power-up behavior of the X9015WS8Z-2.7T1?

At power-up, the X9015WS8Z-2.7T1 initializes its wiper to Tap #15 (midpoint) regardless of prior state, as it is a volatile device with no nonvolatile memory. This behavior is guaranteed across the full 2.7V–5.5V supply range and 0°C to +70°C operating temperature. The wiper stabilizes within 5 µs after VCC reaches valid level, per tPU specification in the datasheet.

Does the X9015WS8Z-2.7T1 support true 3.3V-only operation?

Yes, the X9015WS8Z-2.7T1 is fully specified for 2.7V–5.5V operation, including reliable function at 3.3V nominal supply. All timing parameters (e.g., tCYC ≥ 4 µs, tIW = 1–5 µs), electrical characteristics (ICC1 ≤ 50 µA, ISB ≤ 1 µA), and analog performance (linearity, noise) are validated across this range - making it suitable for direct interface with 3.3V microcontrollers without level translation.

How does the "make-before-break" wiper switching affect circuit design?

The X9015WS8Z-2.7T1 uses make-before-break switching during tap transitions, meaning multiple resistor nodes connect briefly to RW/VW. This prevents open-circuit conditions but may temporarily reduce effective RTOTAL by up to ~30% if stepping across many taps rapidly. Designers should avoid high-frequency wiper updates in precision voltage dividers and allow ≥5 µs settling after each INC edge per tIW spec.

Can the X9015WS8Z-2.7T1 be used as a two-terminal variable resistor?

Yes, the X9015WS8Z-2.7T1 can operate as a two-terminal variable resistor by connecting either RH/VH or RL/VL to VSS (or VCC) and using RW/VW with the other fixed terminal. In this configuration, resistance varies from near 0Ω (Tap #0 or #31) to 10kΩ (full scale), with wiper resistance (200–1000Ω) contributing directly to total value - a key consideration for current-sensing or low-impedance load applications.

What is the maximum allowable voltage across RH/VH and RL/VL terminals?

The X9015WS8Z-2.7T1 specifies ΔV = |VH – VL| ≤ 5V maximum, independent of VCC. This limit ensures safe operation of the internal resistor string and transfer gates. Exceeding 5V differential risks permanent damage, even if individual terminal voltages remain within –1V to +7V absolute ratings relative to VSS. For ratiometric applications, both terminals should stay within 0V to VCC to maintain linearity and avoid leakage-induced errors.