Melexis Technologies NV MLX90614KSF-ABA-000-TU

Overview

MLX90614KSF-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 from 0°C to +50°C for both ambient (Ta) and object (To) temperature, with object range spanning -70°C to +380°C and ambient range -40°C to +125°C. It integrates thermopile detector and signal-conditioning ASSP, supports SMBus digital interface and configurable PWM output, and is used in automotive blind-angle detection, thermal comfort control, and medical-grade body temperature sensing.

For engineers reviewing the MLX90614KSF-ABA-000-TU datasheet, pinout, applications, or equivalent options, key selection factors include its TO-39 package compatibility, SMBus slave address 0x5A, 10-bit PWM resolution, medical-accuracy option support, and thermal gradient compensation capability in xCx variants - all verified against Melexis Doc#3901090614 Rev 021.

Technical Context

The MLX90614KSF-ABA-000-TU implements a chopper-stabilized low-noise amplifier, 17-bit sigma-delta ADC, and programmable DSP for IR signal processing, enabling 0.02°C measurement resolution in SMBus mode. Its internal state machine controls dual-sensor readout (second sensor unimplemented in ABA variant), FIR/IIR filtering, and real-time Ta/To computation using factory-stored calibration coefficients stored in EEPROM.

Communication operates exclusively in SMBus slave mode at 10–100 kHz, with fixed 0x5A slave address (LSB programmable), POR-initiated default SMBus activation, and no sleep mode support - consistent with its Axx-series 5V supply architecture. The device uses an integrated long-wave pass optical filter (5.5–14 µm) for ambient/sunlight immunity and relies on isothermal mounting for specified accuracy.

Key Specifications

Pinout & Package

MLX90614KSF-ABA-000-TU is housed in an industry-standard 4-pin TO-39 metal can package with hermetically sealed IR window and integrated long-wave pass optical filter (5.5–14 µm). The metal can must connect to VSS only; no other electrical connection is permitted per Melexis EMC and isothermal guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MLX90614ESF-ACC-000-TU, the MLX90614KSF-ABA-000-TU provides extended ambient operation critical for engine bay or industrial enclosures, while AMG8833 trades single-point accuracy for pixel-level thermal profiling - making MLX90614KSF-ABA-000-TU optimal for cost-sensitive, high-reliability spot-sensing where mechanical ruggedness and factory calibration are mandatory.

Availability

MLX90614KSF-ABA-000-TU is available at Aetrix Electronics and suitable for automotive blind-angle detection, medical body temperature screening, and industrial moving-part monitoring requiring stable component supply, long-term lifecycle continuity, and traceable sourcing.

Supply support for MLX90614KSF-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 wireless RF ICs for automotive, industrial, and healthcare markets, with core expertise in magnetic, IR, and pressure sensing technologies.

The MLX90614 product line delivers factory-calibrated, single/dual-zone IR thermometers optimized for non-contact temperature measurement in space-constrained, thermally demanding environments - targeting automotive safety, medical diagnostics, and smart building control.

FAQ

What is the operating temperature range for MLX90614KSF-ABA-000-TU?

The MLX90614KSF-ABA-000-TU supports an ambient temperature range of -40°C to +125°C and an object temperature range of -70°C to +380°C. These ranges are validated per Melexis Doc#3901090614 Rev 021. Accuracy specifications (±0.5°C) apply only between 0°C and +50°C for both Ta and To, and require isothermal mounting conditions to maintain thermal equilibrium across the TO-39 package.

Does MLX90614KSF-ABA-000-TU support sleep mode?

No, MLX90614KSF-ABA-000-TU does not support sleep mode. As an Axx-series 5V device, it lacks the low-power sleep functionality found in Bxx (3V) variants. Its typical supply current is 1.3–2.5 mA in active operation, and power-down requires external VDD control. This is explicitly stated in Note 6 of Section 3.2.1 and confirmed in Table 7 footnotes of the official datasheet.

What is the default communication interface for MLX90614KSF-ABA-000-TU?

The factory default power-on reset (POR) setting for MLX90614KSF-ABA-000-TU is SMBus mode. Pin 2 (SDA/PWM) functions as an open-drain SMBus data line, and Pin 1 (SCL/Vz) serves as the clock input. The device operates as a slave with fixed 7-bit address 0x5A (LSB programmable), and switching to PWM mode requires EEPROM configuration via SMBus write to register 0x02.

Can MLX90614KSF-ABA-000-TU measure human body temperature accurately?

Yes, MLX90614KSF-ABA-000-TU achieves ±0.5°C accuracy from 0°C to +50°C - covering normal human body temperature (36°C–37.5°C) - when mounted under isothermal conditions. A dedicated medical-accuracy version (±0.2°C near 37°C) exists but requires specific variant ordering (e.g., MLX90614xxx-ABA-001-TU); the standard MLX90614KSF-ABA-000-TU supports this use case with proper optical path and calibration validation.

What optical filter is integrated into MLX90614KSF-ABA-000-TU?

MLX90614KSF-ABA-000-TU incorporates an integrated long-wave pass optical filter with transmission band 5.5 µm to 14 µm, blocking visible and near-infrared radiation to ensure ambient light and sunlight immunity. This filter is part of the TO-39 package assembly and is specified in Section 1 and Figure 1 of the datasheet; it is not present in xCH/xCI variants, which use uncoated silicon lenses instead.