Renesas X9315WSIZ-2.7

Overview

X9315WSIZ-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 2.7V–5.5V single-supply operation. It functions as a three-terminal voltage divider or two-terminal variable resistor in precision analog trimming applications requiring power-up repeatability and low drift.

For engineers reviewing the X9315WSIZ-2.7 datasheet, X9315WSIZ-2.7 pinout, X9315WSIZ-2.7 application, or X9315WSIZ-2.7 equivalent, this device delivers verified 10kΩ end-to-end resistance, ±20% tolerance, -40°C to +85°C industrial temperature range, Pb-free SOIC-8 packaging, and 5µA standby current - critical for battery-powered sensor calibration and programmable gain control.

Technical Context

The X9315WSIZ-2.7 uses a 5-bit up/down counter driving a decoder that selects one of 32 wiper taps across a monolithic resistor array. Wiper position is stored in nonvolatile EEPROM upon CS↑ with INC HIGH and recalled automatically at power-up.

Its 3-wire serial interface (CS, U/D, INC) operates with make-before-break switching, enabling glitch-free transitions. Terminal voltages are rail-to-rail (0V to VCC), wiper resistance is 400–1000Ω at 2.7V, and absolute linearity error is ±1 MI (minimum increment = RTOTAL/31).

Key Specifications

Pinout & Package

Package: 8-lead narrow-body SOIC (Pb-free), JEDEC MS-012-AA compliant, M8.15 footprint (4.80mm × 3.80mm × 1.27mm height).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ10 and MCP41010-I/P, the X9315WSIZ-2.7 uniquely combines guaranteed power-up wiper recall, minimal 3-wire control overhead, and industrial temperature qualification - making it optimal for unattended, self-initializing analog trimming tasks.

Availability

X9315WSIZ-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and medical device analog trimming requiring stable component supply, RoHS-compliant packaging, and long-term obsolescence management.

Supply support for X9315WSIZ-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) designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.

The X9315WSIZ-2.7 belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered specifically for replacing mechanical trimmers in industrial, medical, and communications equipment where reliability, repeatability, and nonvolatile setting retention are mandatory.

FAQ

What is the exact end-to-end resistance value and tolerance of the X9315WSIZ-2.7?

The X9315WSIZ-2.7 has a nominal end-to-end resistance (RTOTAL) of 10kΩ with a tolerance of ±20%, measured across RH/VH and RL/VL terminals. This value is specified over the full -40°C to +85°C operating temperature range and remains stable due to its temperature-compensated resistor array design.

Does the X9315WSIZ-2.7 retain its wiper position after power cycling?

Yes, the X9315WSIZ-2.7 stores the wiper position in nonvolatile EEPROM memory. Upon power-up, it automatically recalls the last stored value, ensuring repeatable analog settings without host intervention. Data retention is rated for 100 years under normal operating conditions.

What package type and lead count does the X9315WSIZ-2.7 use?

The X9315WSIZ-2.7 is housed in an 8-lead narrow-body SOIC package (JEDEC MS-012-AA), Pb-free and RoHS-compliant, with dimensions 4.80mm × 3.80mm × 1.27mm. Its M8.15 footprint is compatible with standard SOIC-8 PCB layouts and reflow profiles.

Can the X9315WSIZ-2.7 operate from a 3.3V supply?

Yes, the X9315WSIZ-2.7 supports supply voltages from 2.7V to 5.5V, making it fully compatible with 3.3V systems. At 3.3V, its active current remains ≤80µA, standby current ≤5µA, and wiper resistance falls within the 400–1000Ω range specified for 2.7V operation.

How is the wiper position programmed on the X9315WSIZ-2.7?

The X9315WSIZ-2.7 uses a 3-wire interface: CS (active-low chip select), U/D (direction control), and INC (negative-edge-triggered increment clock). With CS LOW, toggling INC moves the wiper one position up or down per edge, determined by the U/D logic level. Storing to EEPROM requires CS rising while INC is HIGH.