Melexis Technologies NV MLX90614ESF-ABA-000-TU

Overview

MLX90614ESF-ABA-000-TU from Melexis is a factory-calibrated, single-zone infrared thermometer IC in TO-39 metal can package, delivering ±0.5°C accuracy for object temperature (−70°C to +380°C) and ambient temperature (−40°C to +85°C) with 0.02°C measurement resolution in SMBus mode. It integrates thermopile detector and signal-conditioning ASSP, supports SMBus digital interface and configurable PWM output, and is used in non-contact thermal sensing for automotive HVAC, medical thermometry, and industrial temperature control.

For engineers reviewing the MLX90614ESF-ABA-000-TU datasheet, pinout, applications, or equivalent options, key selection considerations include its TO-39 package compatibility, SMBus slave address 0x5A, 5V supply operation (Axx variant), −40°C to +85°C ambient rating, and dual-mode digital output (SMBus default / programmable PWM).

Technical Context

The MLX90614ESF-ABA-000-TU implements a chopper-stabilized low-noise amplifier, 17-bit sigma-delta ADC, and embedded DSP for real-time ambient (Ta) and object (To) temperature computation. Its signal chain processes raw thermopile voltage through programmable FIR/IIR filtering before final calibration and rescaling.

It operates as an SMBus slave device with fixed 0x5A address (LSB configurable), supports 10–100 kHz clock frequency, and features EEPROM-programmable parameters including emissivity (0.1–1.0), PWM range, and thermal relay thresholds - all retained for 10 years at 85°C.

Key Specifications

Pinout & Package

MLX90614ESF-ABA-000-TU uses the industry-standard 4-pin TO-39 metal can package with hermetically sealed IR window and integrated long-wave pass optical filter (5.5 µm–14 µm). The metal case must be connected to VSS only; no other electrical connection is permitted.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar non-contact IR temperature sensing applications.

Compared with MLX90614ESF-BAA-000-TU, the MLX90614ESF-ABA-000-TU offers higher supply voltage tolerance and integrated zener protection but lacks sleep mode; versus AMG8833, it delivers superior single-point accuracy and factory calibration at the cost of zero spatial resolution.

Availability

MLX90614ESF-ABA-000-TU is available at Aetrix Electronics and suitable for automotive HVAC control, medical thermometry, and industrial moving-part monitoring requiring stable component supply, long-term calibration integrity, and TO-39 mechanical robustness.

Supply support for MLX90614ESF-ABA-000-TU 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

Melexis is a Belgian semiconductor company specializing in sensor and driver ICs for automotive, industrial, and consumer applications, with expertise in magnetic, infrared, and pressure sensing technologies.

The MLX90614 product line was designed for high-accuracy, low-cost non-contact temperature measurement in space-constrained environments, targeting automotive, healthcare, and smart appliance markets where reliability and factory calibration are critical.

FAQ

What is the operating temperature range for the MLX90614ESF-ABA-000-TU ambient sensor?

The MLX90614ESF-ABA-000-TU ambient temperature (Ta) operating range is −40°C to +85°C, as defined by its "E" temperature grade designation. This range ensures full functionality and calibration validity of the on-chip silicon temperature sensor and signal processing circuitry under specified thermal equilibrium conditions.

Does the MLX90614ESF-ABA-000-TU support both SMBus and PWM output simultaneously?

No, the MLX90614ESF-ABA-000-TU does not support simultaneous SMBus and PWM output. It operates in one communication mode at a time: SMBus is the factory default power-on state, while PWM mode must be explicitly enabled via EEPROM configuration. The SDA/PWM pin functions exclusively as either bidirectional SMBus data line or unidirectional PWM output.

Can the MLX90614ESF-ABA-000-TU measure object temperatures below 0°C?

Yes, the MLX90614ESF-ABA-000-TU measures object temperature (To) from −70°C to +380°C. Its thermopile detector and signal chain are fully functional across this full range, with ±0.5°C accuracy validated between 0°C and +50°C. Measurements outside that band retain monotonicity and resolution but may exhibit wider absolute error per datasheet specifications.

Is the MLX90614ESF-ABA-000-TU pin-compatible with other MLX90614 variants in TO-39 package?

Yes, all MLX90614 variants in SF (TO-39) package share identical 4-pin pinout and mechanical footprint, including MLX90614ESF-ABA-000-TU. However, electrical behavior differs: Axx variants (like this part) feature SCL zener clamping and 5 V operation, while Bxx variants use 3 V and lack zener protection - requiring corresponding PCB design adjustments despite identical pin layout.

How is emissivity configured on the MLX90614ESF-ABA-000-TU?

Emissivity on the MLX90614ESF-ABA-000-TU is configured by writing a 16-bit value to EEPROM address 0x04, where decimal value = round(65535 × ε) and ε ranges from 0.1 to 1.0. This setting adjusts the To calculation algorithm in real time and persists across power cycles. No recalibration or black-body reference is needed - the change takes effect immediately upon EEPROM write completion.