Renesas X9250TS24IZ-2.7T2

Overview

X9250TS24IZ-2.7T2 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution per channel, SPI serial interface, and dual analog supply rails (V+ = +2.7V to +5.5V, V− = −2.7V to −5.5V). It integrates four independent 100kΩ potentiometers in a single 24-lead SOIC package, supporting precision voltage divider, gain/offset adjustment, and programmable biasing in mixed-signal systems.

For engineers reviewing the X9250TS24IZ-2.7T2 datasheet, X9250TS24IZ-2.7T2 pinout, X9250TS24IZ-2.7T2 application, or X9250TS24IZ-2.7T2 equivalent, key selection criteria include its −2.7V to +5.5V analog supply range, nonvolatile wiper position storage across four data registers per pot, 40Ω typical wiper resistance at 5V, and support for industrial temperature operation (−40°C to +85°C).

Technical Context

The X9250TS24IZ-2.7T2 implements four independent resistor arrays-each with 255 segments and 256 tap points-controlled by dedicated 8-bit volatile Wiper Counter Registers (WCRs). Each array connects to VH/RH, VL/RL, and VW/RW terminals, enabling three-terminal potentiometer or two-terminal variable resistor configurations.

It uses standard SPI protocol (CS, SCK, SI, SO) with device addressing via A0/A1 pins, hardware write protection via WP, and communication pause capability via HOLD. Nonvolatile storage supports 100,000 write cycles per register bit and 100-year data retention, with power-up auto-recall of DR0 contents to each WCR.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (300 mil), Pb-free, RoHS-compliant (M24.3 drawing).

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 X9250TS24IZ-2.7T2 uniquely delivers quad-channel control, true bipolar analog operation, and industrial-grade nonvolatile storage-making it optimal for compact, high-reliability mixed-signal calibration systems where SPI is available and supply flexibility is critical.

Availability

X9250TS24IZ-2.7T2 is available at Aetrix Electronics and suitable for industrial automation, precision instrumentation, and programmable power supply applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for X9250TS24IZ-2.7T2 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 company specializing in precision analog, power management, and interface ICs for industrial, communications, and computing markets.

The X9250 series was designed as a drop-in replacement for mechanical potentiometers in digitally calibrated systems-emphasizing nonvolatile configuration, SPI simplicity, and robust analog performance across extended temperature ranges.

FAQ

What is the analog supply voltage range supported by the X9250TS24IZ-2.7T2?

The X9250TS24IZ-2.7T2 supports V+ = +2.7V to +5.5V and V− = −2.7V to −5.5V, enabling true bipolar operation. This allows the device to function in AC-coupled circuits, dual-supply op-amp configurations, and precision offset adjustment without external level-shifting components. The "-2.7" suffix explicitly denotes this extended low-voltage analog rail capability.

How does nonvolatile storage work in the X9250TS24IZ-2.7T2?

The X9250TS24IZ-2.7T2 provides four 8-bit nonvolatile Data Registers (DR0–DR3) per potentiometer. Writes to these registers trigger an internal 5–10ms high-voltage programming cycle, confirmed via the Read Status command's WIP bit. On power-up, DR0 automatically loads into the corresponding volatile Wiper Counter Register (WCR), ensuring repeatable startup behavior without host intervention.

Can the X9250TS24IZ-2.7T2 be used as a two-terminal variable resistor?

Yes, the X9250TS24IZ-2.7T2 supports two-terminal operation by connecting either VH/RH or VL/RL to a fixed potential and using VW/RW with the remaining terminal. Its 40Ω typical wiper resistance and 100kΩ end-to-end resistance make it suitable for current-limiting, bias adjustment, and programmable load applications-provided wiper current stays within ±7.5mA limits.

What is the purpose of the HOLD pin on the X9250TS24IZ-2.7T2?

The HOLD pin pauses ongoing SPI communication without resetting the instruction sequence. When asserted LOW while SCK is LOW, it freezes data transfer; returning HOLD HIGH (with SCK still LOW) resumes from the exact point of interruption. This feature is valuable in real-time systems where host MCU interrupts must temporarily suspend potentiometer reconfiguration without losing context.

Does the X9250TS24IZ-2.7T2 require specific power supply sequencing?

No strict sequencing is required for VCC, V+, and V−, but all three must reach final values within 1ms of each other. During ramp-up, voltages on VH/RH, VL/RL, and VW/RW pins must remain between V− and V+ at all times. Wiper position recall from nonvolatile memory only occurs after all supplies stabilize-ensuring deterministic startup behavior in complex power domains.