Renesas X9315TMIZ-2.7

Overview

X9315TMIZ-2.7 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 wiper tap positions, nonvolatile wiper position storage, and 3-wire serial interface (CS/U/D/INC). It operates from 2.7V to 5.5V, delivers ±20% end-to-end resistance tolerance, and features 100kΩ total resistance (RTOTAL), -40°C to +85°C industrial temperature range, and Pb-free 8-lead MSOP package. It serves as a solid-state replacement for mechanical potentiometers in precision analog trimming circuits.

For engineers reviewing the X9315TMIZ-2.7 datasheet, X9315TMIZ-2.7 pinout, X9315TMIZ-2.7 application, or X9315TMIZ-2.7 equivalent, this page provides verified specifications including wiper resistance at 2.7V (400–1000Ω), active current (80µA max), standby current (5µA), noise (-120dBV), and absolute linearity (±1 MI), all confirmed for the exact X9315TMIZ-2.7 variant.

Technical Context

The X9315TMIZ-2.7 integrates a 5-bit up/down counter, nonvolatile memory for wiper position retention, and a resistor array with make-before-break wiper switching. Its control logic responds to CS (chip select), U/D (direction), and negative-edge-triggered INC (increment) signals to move the wiper across 32 discrete taps.

It supports both three-terminal potentiometer and two-terminal variable resistor configurations, with terminal voltages constrained between VSS and VCC. The device uses temperature-compensated resistive elements, exhibits ±300 ppm/°C RTOTAL temperature coefficient, and maintains ratiometric stability within ±20 ppm/°C.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (Pb-free), JEDEC MO-187BA compliant, dimensions 3.0mm × 3.0mm × 0.85mm (M8.118 drawing).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ100 and MCP41010-I/P, the X9315TMIZ-2.7 uniquely combines 3-wire simplicity, guaranteed nonvolatile recall, and industrial temperature rating in a compact MSOP-making it optimal for unattended, maintenance-free analog trimming where power loss events are frequent.

Availability

X9315TMIZ-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, battery-powered audio controls, programmable power supply trimming, and PLC analog output scaling requiring stable component supply and long-term calibration integrity.

Supply support for X9315TMIZ-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 Corporation (now part of Renesas Electronics) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, communications, and computing markets.

The X9315 product line delivers digitally controlled potentiometers optimized for high-reliability analog trimming in harsh environments-designed to replace mechanical pots with solid-state robustness, programmability, and nonvolatile memory retention.

FAQ

What is the maximum wiper current rating for the X9315TMIZ-2.7?

The X9315TMIZ-2.7 has a maximum wiper current (IW) rating of ±3.75mA under recommended operating conditions. This limit ensures safe operation without exceeding the 10mW maximum power rating or causing thermal stress to the internal resistor array or wiper switches. Exceeding ±3.75mA may degrade long-term reliability or cause temporary resistance shifts due to self-heating. Always verify current through RW/VW in your application's voltage divider or variable resistor configuration before final design sign-off.

Does the X9315TMIZ-2.7 retain its wiper position after power removal?

Yes, the X9315TMIZ-2.7 stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. This behavior is guaranteed for 100 years of data retention and survives 100,000 store cycles. The store operation occurs when CS transitions HIGH while INC is held HIGH; once stored, the X9315TMIZ-2.7 powers up with that exact wiper position-no host initialization is required. This makes the X9315TMIZ-2.7 ideal for fail-safe calibration in unattended systems.

Can the X9315TMIZ-2.7 operate from a 3.3V supply?

Yes, the X9315TMIZ-2.7 is fully specified for operation from 2.7V to 5.5V, making 3.3V a valid and commonly used supply voltage. At 3.3V, its active current remains ≤80µA, standby current ≤5µA, and wiper resistance falls within the 400–1000Ω range. All timing parameters-including tCYC (4µs min), tIW (1–5µs), and tWR (5–10ms)-are met at 3.3V, ensuring reliable 3-wire interface operation with standard microcontrollers.

What is the temperature coefficient of the X9315TMIZ-2.7's total resistance?

The X9315TMIZ-2.7 has a total resistance temperature coefficient (RTOTAL TC) of ±300 ppm/°C over the -40°C to +85°C industrial range. Its ratiometric temperature coefficient is tighter at ±20 ppm/°C-meaning the relative voltage division ratio remains highly stable despite ambient temperature changes. This ratiometric stability is critical for applications like sensor biasing and reference scaling where absolute resistance drift is less important than consistent proportionality.

Is the X9315TMIZ-2.7 pin-compatible with other X9315 variants?

Yes, all X9315 variants-including X9315TMIZ-2.7-share identical 8-pin MSOP pinouts and electrical interface behavior. Differences lie only in RTOTAL (100kΩ), supply voltage range (2.7–5.5V), temperature grade (-40°C to +85°C), and packaging (Pb-free MSOP). No PCB layout change is needed when substituting between X9315WMIZ-2.7 (10kΩ), X9315UMIZ-2.7 (50kΩ), or X9315TMIZ-2.7 (100kΩ), provided the application's resistance range and power budget are compatible.