Renesas X9C104SIZT1

Overview

X9C104SIZT1 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 wiper tap points, ±20% end-to-end resistance tolerance, nonvolatile wiper position storage, and 5V CMOS operation. It functions as a three-terminal voltage divider or two-terminal variable resistor in precision analog trimming applications including power supply feedback networks and sensor calibration circuits.

For engineers reviewing the X9C104SIZT1 datasheet, X9C104SIZT1 pinout, X9C104SIZT1 application, or X9C104SIZT1 equivalent, key selection criteria include its 100 kΩ end-to-end resistance, -40°C to +85°C industrial temperature range, SOIC-8 RoHS-compliant package, and three-wire serial interface with store-on-CS-high capability.

Technical Context

The X9C104SIZT1 integrates a 7-bit up/down counter, nonvolatile memory for wiper position retention, and a 99-resistor ladder with make-before-break switching. Its wiper terminal (VW/RW) exhibits 40 Ω typical series resistance and supports ±5 V terminal voltages relative to VSS.

Control is executed via negative-edge-triggered INC, level-sensitive U/D, and active-low CS inputs. A store operation occurs when CS transitions high while INC is high, writing the current wiper position to EEPROM with 100-year data retention and 100,000-cycle endurance.

Key Specifications

Pinout & Package

Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, surface-mount, 3.90 mm × 4.90 mm footprint with 1.27 mm lead pitch.

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 X9C104SIZT1 uniquely delivers 100 kΩ resistance, true nonvolatile wiper storage, and a minimal three-wire interface-making it optimal for standalone analog trimming where deterministic power-on behavior and single-supply simplicity are critical.

Availability

X9C104SIZT1 is available at Aetrix Electronics and suitable for industrial instrumentation, power supply feedback loops, and sensor calibration systems requiring stable component supply, long-term parameter retention, and RoHS-compliant packaging.

Supply support for X9C104SIZT1 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

Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The X9C104SIZT1 belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in analog signal-path applications requiring electronic programmability and nonvolatile setting retention.

FAQ

What is the end-to-end resistance value of the X9C104SIZT1?

The X9C104SIZT1 has a nominal end-to-end resistance of 100 kΩ with a tolerance of ±20%, as specified in the FN8222 datasheet. This value is fixed per device variant and applies across the full operating temperature range of -40°C to +85°C. The resistance is implemented using a monolithic 99-element resistor array, and the 100 kΩ rating directly determines voltage division ratios and current limiting capabilities in circuit implementations of the X9C104SIZT1.

Does the X9C104SIZT1 retain its wiper position after power cycling?

Yes, the X9C104SIZT1 retains its wiper position after power cycling using on-chip nonvolatile memory. When CS transitions high while INC is high, the current wiper position is stored with guaranteed 100-year data retention and 100,000 write cycles. Upon subsequent power-up, the stored value is automatically recalled to the wiper, ensuring deterministic startup behavior without MCU intervention-this is a core functional differentiator of the X9C104SIZT1 versus volatile digital potentiometers.

What package type is used for the X9C104SIZT1?

The X9C104SIZT1 uses an 8-lead narrow-body SOIC package conforming to outline drawing M8.15E. It is RoHS-compliant, surface-mountable, measures 3.90 mm × 4.90 mm, and features a 1.27 mm lead pitch. This package replaces earlier MDP0027 variants and is optimized for automated assembly with JEDEC MS-012-AA compatibility, making the X9C104SIZT1 suitable for high-volume industrial PCB manufacturing.

Can the X9C104SIZT1 operate with bipolar analog signals?

Yes, the X9C104SIZT1 supports bipolar analog signals: its VH/RH and VL/RL terminals accept voltages from -5 V to +5 V relative to VSS, enabled by an internal charge pump powered from the 5 V VCC supply. This allows direct use in AC-coupled or dual-supply signal paths without external level-shifting circuitry-confirming the X9C104SIZT1's suitability for audio, sensor, and instrumentation applications requiring symmetric signal swing.

How many wiper positions does the X9C104SIZT1 provide?

The X9C104SIZT1 provides exactly 100 discrete wiper positions, corresponding to 99 resistive elements in its ladder network. Each step represents a minimum increment (MI) of RTOTAL/99 ≈ 1.01 kΩ for the 100 kΩ variant. This 1% resolution is confirmed in the datasheet's Absolute Linearity specification (±1 MI) and enables precise analog adjustments in applications such as power supply trimming and sensor calibration where the X9C104SIZT1 is deployed.