Renesas X9110TV14IZ

Overview

X9110TV14IZ from Intersil is a dual-supply, low-power, 1024-tap digitally controlled potentiometer (XDCP™) with SPI interface, 100kΩ end-to-end resistance, ±5V analog supply range (V+/V−), and industrial temperature rating (−40°C to +85°C). It functions as a programmable three-terminal potentiometer or two-terminal variable resistor for precision analog trimming in voltage regulators, amplifier gain control, and sensor signal conditioning.

For engineers reviewing the X9110TV14IZ datasheet, X9110TV14IZ pinout, X9110TV14IZ application, or X9110TV14IZ equivalent, this device delivers verified 10-bit resolution, nonvolatile wiper position storage across four registers, power-on recall from DR0, <5µA standby current, and RoHS-compliant 14-lead TSSOP packaging - critical for embedded industrial and automotive subsystems requiring long-term calibration stability.

Technical Context

The X9110TV14IZ implements a monolithic CMOS resistor ladder of 1023 segments with CMOS-switched wiper selection controlled by a volatile 10-bit Wiper Counter Register (WCR). Its SPI interface supports four-byte read/write operations for WCR and four nonvolatile data registers (DR0–DR3), plus two-byte transfer instructions between registers.

Analog operation requires independent dual supplies: VCC (2.7V–5.5V) for logic and V+/V− (±2.7V to ±5.5V) for the potentiometer array, enabling rail-to-rail analog signal handling while maintaining digital interface integrity. Power-up automatically loads DR0 into WCR, ensuring deterministic startup behavior without host intervention.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (RoHS-compliant, M14.173 drawing), 5.0mm × 4.4mm × 1.2mm body, 0.65mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ100 and MCP41HV51-103, the X9110TV14IZ uniquely combines SPI interface, dual ±5.5V analog rails, 10-bit resolution, and four nonvolatile registers - making it the only option supporting autonomous power-on calibration in bipolar industrial signal chains.

Availability

X9110TV14IZ is available at Aetrix Electronics and suitable for industrial motor drives, automotive cabin controllers, and medical diagnostic equipment requiring stable component supply, long-term calibration retention, and extended temperature operation.

Supply support for X9110TV14IZ 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 (now part of Renesas Electronics) designs high-performance analog and mixed-signal ICs for industrial, aerospace, and communications markets, emphasizing precision, reliability, and long-term support.

The X9110 product line delivers digitally programmable analog front-ends for calibration-critical systems, targeting applications where mechanical potentiometers fail due to wear, vibration, or environmental stress.

FAQ

What is the operating temperature range for the X9110TV14IZ?

The X9110TV14IZ is rated for industrial operation from −40°C to +85°C, as confirmed in the Ordering Information table and Recommended Operating Conditions section of the FN8158 datasheet. This range applies to all electrical specifications including end-to-end resistance tolerance, wiper resistance, and SPI timing parameters - unlike commercial-grade variants (e.g., X9110TV14Z) limited to 0°C to +70°C.

Does the X9110TV14IZ support true bipolar analog operation?

Yes, the X9110TV14IZ supports true bipolar analog operation via independent V+ and V− supply pins, rated from ±2.7V to ±5.5V. This allows RH and RL terminals to handle signals spanning the full V− to V+ range, enabling use in AC-coupled amplifiers, dual-supply comparators, and precision offset trimming circuits - a capability absent in single-supply digital potentiometers like the MCP41HV51.

How does power-on recall work in the X9110TV14IZ?

On power-up, the X9110TV14IZ automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR), establishing a known wiper position without host intervention. This behavior is guaranteed per the "Power-on recall" feature and is independent of CS or SPI activity - critical for fail-safe startup in regulated power supplies and sensor interfaces where undefined wiper state could cause overvoltage or incorrect scaling.

Can the X9110TV14IZ be used as a two-terminal variable resistor?

Yes, the X9110TV14IZ can be configured as a two-terminal variable resistor by connecting either RH or RL to RW (wiper), effectively using only one half of the resistor ladder. The datasheet explicitly confirms this in the "Principles of Operation" section and Figure 13 ("TWO TERMINAL VARIABLE RESISTOR"), with wiper resistance specified at 100Ω typical - a key parameter for current-sensing and bias-setting applications where series resistance impacts accuracy.

What is the maximum SPI clock frequency supported by the X9110TV14IZ?

The X9110TV14IZ supports a maximum SPI clock frequency of 2.5MHz, as specified in the AC Timing table (Page 12 of FN8158 Rev 5.00). At this rate, full four-byte instructions (e.g., Write WCR) complete in under 2µs, enabling real-time wiper updates in closed-loop control systems. Timing parameters including tSU, tH, tWH, and tWL are all validated at 2.5MHz, ensuring robust operation without margin violation.