Renesas X9015UM8IZ

Overview

X9015UM8IZ from Intersil is a volatile, digitally controlled potentiometer with 32-tap resolution, 10kΩ end-to-end resistance, and MSOP-8 package. It operates from 2.7V to 5.5V, draws ≤50µA active current, and features a three-wire up/down serial interface for wiper position control in analog trimming applications such as precision voltage divider biasing in industrial sensor signal conditioning circuits.

For engineers reviewing the X9015UM8IZ datasheet, X9015UM8IZ pinout, X9015UM8IZ application, or X9015UM8IZ equivalent, this page delivers verified electrical parameters, validated terminal roles, confirmed industrial temperature range (–40°C to +85°C), and real-world use cases requiring low-noise, low-power digital resistance adjustment without nonvolatile storage.

Technical Context

The X9015UM8IZ implements a 5-bit up/down counter driving a 31-resistor string array with make-before-break electronic switches. Wiper position is set by edge-triggered INC input and direction-controlled U/D logic level, with CS enabling selection and standby mode entry.

It provides ratiometric performance with ±300 ppm/°C total resistance TC and ±20 ppm/°C ratiometric TC, while maintaining absolute linearity error within ±1 MI and relative linearity within ±0.2 MI across all 32 taps - critical for closed-loop calibration accuracy in programmable gain stages.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (M8.118), RoHS-compliant, 3.0mm × 3.0mm body, 0.65mm pitch, 0.85mm height - suitable for space-constrained PCB layouts in instrumentation modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9015UM8IZ, AD5243BRMZ10 adds nonvolatility at the cost of interface complexity and larger package, while MCP4017T-103E/MS offers SPI compatibility but increases active current and removes true up/down simplicity - making X9015UM8IZ optimal for low-power, GPIO-limited industrial trimming where volatility is acceptable.

Availability

X9015UM8IZ is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable power supplies, and embedded instrumentation requiring stable component supply with guaranteed –40°C to +85°C operation and RoHS-compliant packaging.

Supply support for X9015UM8IZ 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 is a precision analog and power management semiconductor provider, now part of Renesas Electronics, delivering high-reliability components for industrial, infrastructure, and computing markets.

The X9015 product line was designed specifically for digitally programmable analog trimming in space- and power-constrained systems where volatile, low-noise, and low-quiescent-current resistance adjustment is required - not for memory-retentive or high-speed reconfiguration use cases.

FAQ

What is the default wiper position of the X9015UM8IZ at power-up?

The X9015UM8IZ initializes its wiper to Tap #15 (midpoint) upon power-up. This behavior is hardwired and independent of prior state, as the device is volatile and does not retain wiper position across power cycles. The X9015UM8IZ's reset-to-midpoint feature ensures predictable startup conditions for analog circuits like symmetric bias networks or balanced amplifier configurations.

Does the X9015UM8IZ support nonvolatile wiper storage?

No, the X9015UM8IZ is strictly volatile and loses wiper position on power removal. It contains no EEPROM or flash memory. Any retained setting must be reprogrammed by the host controller at boot. This distinguishes the X9015UM8IZ from nonvolatile alternatives like the AD5243, and aligns with its design focus on low-power, low-cost trimming where persistence is unnecessary.

Can the X9015UM8IZ operate reliably at 2.7V supply voltage?

Yes, the X9015UM8IZ is explicitly rated for VCC = 2.7V to 5.5V per its ordering suffix "-2.7" and datasheet Section 4. It maintains full functionality including 50µA max ICC, 1µA max ISB, and valid wiper resistance (400–1000Ω) at 2.7V. This makes the X9015UM8IZ suitable for direct integration with 3.3V and even some 2.8V microcontroller GPIOs without level translation.

What is the significance of "make-before-break" switching in the X9015UM8IZ?

"Make-before-break" means the X9015UM8IZ briefly connects two adjacent taps during wiper transition, preventing open-circuit conditions. This avoids transient glitches in op-amp feedback paths or unstable states in comparator hysteresis networks. For the X9015UM8IZ, this behavior is inherent to its internal transfer gate architecture and ensures robust analog performance during dynamic reconfiguration.

How does the X9015UM8IZ differ from the X9015US8IZ?

The X9015UM8IZ uses an 8-lead MSOP package (M8.118) and shares the same –40°C to +85°C temperature rating and 2.7V–5.5V supply range as the X9015US8IZ, which uses an 8-lead SOIC package (M8.15). They are functionally identical except for package type, thermal characteristics, and board area - the X9015UM8IZ saves ~40% PCB footprint but has slightly higher thermal resistance than the SOIC variant.