Renesas X9110TV14I-2.7

Overview

X9110TV14I-2.7 from Intersil is a dual-supply, low-power, 1024-tap digitally controlled potentiometer (XDCP™) with SPI interface, 100kΩ end-to-end resistance, ±5V analog voltage range (V+/V−), and 2.7V to 5.5V system supply (VCC). It implements a volatile wiper counter register (WCR) and four nonvolatile data registers (DR0–DR3), enabling programmable gain control in audio amplifiers and precision DC bias adjustment in sensor signal conditioning circuits.

For engineers reviewing the X9110TV14I-2.7 datasheet, X9110TV14I-2.7 pinout, X9110TV14I-2.7 application, or X9110TV14I-2.7 equivalent, this device supports SPI-based wiper positioning, power-on recall from DR0, <5µA standby current, and operation across −40°C to +85°C industrial temperature range - critical for embedded instrumentation and industrial control systems requiring stable, nonvolatile trim calibration.

Technical Context

The X9110TV14I-2.7 integrates a monolithic CMOS resistor ladder of 1023 segments with CMOS switch-controlled wiper (RW) selection via a 10-bit Wiper Counter Register (WCR). Its dual analog supply rails (V+ and V−) enable bidirectional signal handling up to ±5V, while the system supply (VCC) operates independently from 2.7V to 5.5V - decoupling logic and analog domains for noise-sensitive applications.

SPI communication uses CS, SCK, SI, and SO pins with HOLD and WP for bus management and hardware write protection. The device supports four-byte read/write instructions for WCR and DR registers, two-byte transfer commands between them, and status monitoring via the WIP bit during nonvolatile writes lasting up to 10ms.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (RoHS-compliant, M14.173 drawing), surface-mount, 5.0mm × 4.4mm footprint, 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 MCP42010-I/P, the X9110TV14I-2.7 uniquely delivers dual analog supply capability (±5.5V), nonvolatile wiper storage across four registers, and SPI-native power-on recall - making it the only option among the three suitable for precision bipolar instrumentation and field-reprogrammable industrial calibrations.

Availability

X9110TV14I-2.7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, programmable power supplies, and embedded audio systems requiring stable component supply, long-term calibration retention, and extended temperature operation.

Supply support for X9110TV14I-2.7 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) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, aerospace, and communications markets.

The X9110 product line delivers digitally controlled potentiometers optimized for high-accuracy, low-drift analog trimming in harsh environments - designed specifically for replacing mechanical pots in test equipment, medical devices, and factory automation systems.

FAQ

What is the operating temperature range for the X9110TV14I-2.7?

The X9110TV14I-2.7 is rated for industrial operation from −40°C to +85°C. This range is confirmed in the Ordering Information table and Recommended Operating Conditions section of the FN8158 datasheet. Unlike commercial-grade variants (e.g., X9110TV14Z-2.7), the "I" suffix explicitly denotes the extended temperature grade, ensuring reliable performance in factory-floor and outdoor embedded systems where thermal stability is critical. The X9110TV14I-2.7 maintains full specification compliance across this range.

Does the X9110TV14I-2.7 support true bipolar analog signal control?

Yes, the X9110TV14I-2.7 supports true bipolar analog signal control via independent V+ and V− supply pins, rated from −5.5V to +5.5V. This allows RH, RL, and RW terminals to handle signals spanning the full V− to V+ range - essential for op-amp circuits requiring symmetric rail-to-rail operation. The datasheet specifies analog voltage limits separately from VCC, confirming that the X9110TV14I-2.7 can condition ±5V sensor outputs or adjust bipolar DAC references without clipping or distortion.

How does power-on recall work in the X9110TV14I-2.7?

On power-up, the X9110TV14I-2.7 automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR), positioning the wiper accordingly. This behavior is hardwired and requires no host intervention. The FN8158 datasheet states that DR0 serves as the default register for power-on recall, and its value persists for 100 years. To ensure correct startup behavior, users must pre-program DR0 with the desired initial wiper position - for example, via a firmware routine during manufacturing or field calibration. The X9110TV14I-2.7 executes this load after all supplies (VCC, V+, V−) stabilize within 1ms.

Can the X9110TV14I-2.7 be used as a two-terminal variable resistor?

Yes, the X9110TV14I-2.7 can be configured as a two-terminal variable resistor by connecting either RH or RL to RW (wiper), leaving the other fixed terminal unused. Figure 13 in the FN8158 datasheet explicitly illustrates this configuration for variable current control. In this mode, resistance varies from near-zero (wiper at shorted terminal) to 100kΩ (wiper at open terminal), with wiper resistance (100–500Ω depending on VCC) contributing minimally to total resistance. This configuration is commonly used in LED current limiting and RC timing networks where precise, software-adjustable resistance is required.

What is the maximum SPI clock frequency supported by the X9110TV14I-2.7?

The X9110TV14I-2.7 supports a maximum SPI clock frequency of 2.5MHz, as specified in the AC Timing table (Page 12 of FN8158 Rev 5.00). This limit applies to all SPI operations including read, write, and transfer instructions. The datasheet defines minimum timing parameters such as tCYC (400ns), tWH/tWL (150ns each), and setup/hold times (50ns), confirming robust timing margins at this rate. Operating above 2.5MHz risks command corruption or incomplete register updates, especially during nonvolatile writes where internal high-voltage generation depends on precise clock phasing.