Renesas X9111TV14Z

Overview

X9111TV14Z from Intersil is a single-supply, low-power, 1024-tap digitally controlled potentiometer (XDCP™) with SPI interface, 100kΩ end-to-end resistance, 2.7V–5.5V operation, and 14-lead TSSOP package. It functions as a 3-terminal potentiometer or 2-terminal variable resistor for precision analog trimming in voltage regulators, amplifier gain control, and sensor signal conditioning.

For engineers reviewing the X9111TV14Z datasheet, X9111TV14Z pinout, X9111TV14Z application, or X9111TV14Z equivalent, this device delivers verified 10-bit resolution, nonvolatile wiper position storage across four registers, power-on recall from DR0, <3µA standby current, and RoHS-compliant 14 Ld TSSOP packaging - all critical for embedded analog tuning and long-life industrial calibration.

Technical Context

The X9111TV14Z implements a monolithic CMOS resistor ladder of 1023 segments with CMOS-switched wiper access controlled by a volatile 10-bit Wiper Counter Register (WCR). Its SPI interface supports four-byte read/write/transfer instructions and two-byte register transfers, with hardware write protection via WP pin and HOLD for serial bus pause.

Power-up behavior is deterministic: DR0 contents load into WCR at VCC stabilization, enabling immediate analog function without host initialization. Nonvolatile writes to DR0–DR3 require high-voltage internal cycles (5–10 ms), monitored via WIP status bit, while wiper response after instruction is ≤10 µs.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (4.4mm width), RoHS-compliant, moisture sensitivity level per MSL3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5241BRMZ10 and MCP41010-I/P, the X9111TV14Z uniquely combines 10-bit resolution, four nonvolatile registers with DR0 power-on recall, and 100kΩ impedance - making it optimal for factory-calibrated, maintenance-free analog tuning in industrial and medical equipment.

Availability

X9111TV14Z is available at Aetrix Electronics and suitable for voltage regulator trimming, audio volume control, sensor calibration, and op-amp offset adjustment requiring stable component supply and long-term calibration integrity.

Supply support for X9111TV14Z 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 expertise in high-reliability industrial and infrastructure solutions.

The X9111 product line delivers digitally programmable analog tuning for calibration-critical systems, emphasizing nonvolatile storage, low-power operation, and robust SPI interface - targeting medical devices, test equipment, and industrial control.

FAQ

What is the guaranteed operating temperature range for the X9111TV14Z?

The X9111TV14Z is specified for commercial temperature range: 0°C to +70°C. This is confirmed in the Ordering Information table on page 2 of FN8159 Rev 5.00, where X9111TV14Z is explicitly listed with "0 to +70" under TEMP RANGE. The -40°C to +85°C variant is designated as X9111TV14IZ.

Does the X9111TV14Z support true 10-bit resolution across its full 100kΩ range?

Yes, the X9111TV14Z provides 1024 discrete tap points (0–1023) across its 100kΩ resistor array, delivering true 10-bit resolution. Absolute linearity is ±1 MI (where MI = RTOT/1023 ≈ 97.7Ω), and relative linearity is ±0.5 MI, as verified in the Analog Characteristics table on page 10 of FN8159 Rev 5.00.

How does the power-on recall feature work in the X9111TV14Z?

At power-up, after VCC stabilizes, the X9111TV14Z automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR). This occurs without host intervention and ensures the wiper assumes a known, factory-programmed position immediately upon power application - a behavior confirmed in the Device Description section on page 4 of FN8159 Rev 5.00.

Can the X9111TV14Z be used as a 2-terminal variable resistor, and what are the design implications?

Yes, the X9111TV14Z can operate as a 2-terminal variable resistor by connecting either RH or RL to RW (Figure 13, page 15). In this mode, resistance varies from ~0Ω (wiper at terminal) to 100kΩ (wiper at opposite end). Wiper resistance (40Ω typ.) becomes part of the total resistance, and maximum wiper current is ±3mA per Analog Characteristics table (page 10).

What is the maximum SPI clock frequency supported by the X9111TV14Z?

The X9111TV14Z supports an SPI clock frequency (fSCK) up to 2.5 MHz, as specified in the AC Timing table on page 12 of FN8159 Rev 5.00. Minimum clock cycle time is 400 ns, with minimum high/low times of 150 ns each. This allows fast register reads/writes while maintaining compatibility with common microcontroller SPI peripherals.