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Melexis Technologies NV MLX91377GGO-ADB-081-RE
- Part No.:
- MLX91377GGO-ADB-081-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Linear, Compass (ICs)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MLX91377GGO-ADB-081-RE.pdf
- Description:
- TRIAXIS POSITION SENSORLINEAR HA
- Quantity:
- Payment:
- Shipping:
Inventory:1,455
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Product details
Overview
MLX91377GGO-ADB-081-RE from Melexis is a dual-die, AEC-Q100 Grade 0 qualified linear Hall effect sensor IC for high-accuracy absolute position sensing in automotive safety-critical systems. It delivers 12-bit SPC (SENT-compliant) output with 1.5 µs tick time, ±10–100 mT magnetic input span, and ASIL-C functional safety certification for SPC mode. Used in steering torque and brake pedal sensors where redundancy and EMC robustness are mandatory.
For engineers reviewing the MLX91377GGO-ADB-081-RE datasheet, pinout, applications, or equivalent options, this page provides verified technical context, TSSOP-16 dual-die package mapping, real-world timing behavior (450 µs latency in SPC mode), intrinsic linearity error <±0.25%, and validated alternatives for torque-sensing and redundant position feedback designs.
Technical Context
The MLX91377GGO-ADB-081-RE implements a monolithic dual-die architecture in a single TSSOP-16 package, with isolated VSS1/VSS2 and VDD1/VDD2 rails enabling full hardware redundancy. Its signal chain integrates a Hall front-end, 12-bit ADC, DSP-based piecewise-linear (PWL) correction (up to 32 segments), and SENT/SPC encoder compliant with SAE J2716 APR2016.
It operates across –40°C to +160°C with 4.5–5.5 V supply, supports programmable measurement range and transfer characteristic, and features inter-die synchronicity of 8.45–9.71 µs at 1.5 µs tick time. Safety mechanisms include dual watchdogs (IWD/AWD), broken-wire diagnostics on both outputs, and ECC-protected NVRAM for calibration data storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Mode | SPC (Short PWM Code) per SAE J2716 APR2016, 12-bit resolution, 1.5 µs tick time |
| Functional Safety | ASIL-C Safety Element out of Context (SEooC) for SPC output per ISO 26262 |
| Magnetic Input Span | ±10 mT to ±100 mT - configurable gain maps field range to full-scale output |
| Latency (SPC) | 450 µs - deterministic delay from magnetic step to SENT frame transmission |
| Inter-Die Synchronicity | 8.45–9.71 µs - enables synchronized dual-channel acquisition for cross-checking |
| Accuracy (INL) | ±0.12% (typ), ±0.25% (max) at 35°C - calibrated linearity over full stroke |
| Operating Temp | –40°C to +160°C - AEC-Q100 Grade 0 qualification for under-hood applications |
Pinout & Package
TSSOP-16 dual-die package with fully isolated die domains (VDD1/VSS1 and VDD2/VSS2), 0.65 mm pitch, RoHS compliant, and qualified for reflow soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 9 | VDEC1 / VDEC2 | Dedicated decoupling pins per die - require local 100 nF ceramic capacitors to GND |
| 2, 10 | VSS1 / VSS2 | Independent ground returns - must be routed separately to avoid coupling between dies |
| 3, 11 | VDD1 / VDD2 | Independent supply inputs - enable true power-domain isolation for redundancy |
| 6, 15 | OUT2 / OUT1 | SPC output terminals - each die drives one SENT channel for cross-validation |
| 7, 8, 14, 16 | N.C. | Not connected - must be tied to PCB ground per Melexis EMC recommendation |
Key Features
| Feature | Design Value |
|---|---|
| Dual-die TSSOP-16 package | Hardware-level redundancy with >4 MΩ isolation resistance between dice - meets ASIL-C fault containment requirements |
| Programmable PWL transfer | Up to 32-segment piecewise-linear correction - eliminates mechanical hysteresis and magnet nonlinearity in torque sensors |
| SPC timing control | Configurable trigger-to-acquisition delay (10 µs typ) and jitter <5 µs - ensures deterministic ECU synchronization |
| Broken-wire diagnostics | Detects open-circuit faults on either output via VDD/VSS pull-up/down monitoring - no external components required |
| 48-bit programmable ID | Unique device identification stored in NVRAM - enables traceability and calibration data binding per unit |
Applications
| Steering Torque Sensing | Brake Pedal Position |
|---|---|
|
Use Scenario: Real-time measurement of torsional twist in steering column using diametrically magnetized ring magnet. IC Role / Device Role / Timing Role: Dual-die MLX91377GGO-ADB-081-RE provides two independent SPC streams for cross-checked torque calculation with 450 µs latency. Use Value: Enables ASIL-C compliant steer-by-wire backup path by delivering synchronized, fault-detectable position data without software intervention. |
Use Scenario: Non-contact detection of brake pedal travel in electric brake boosters with temperature-compensated analog interface. IC Role / Device Role / Timing Role: MLX91377GGO-ADB-081-RE operates in SPC mode with 1.5 µs tick time to meet 500 µs ECU frame deadlines. Use Value: Delivers <±0.25% INL accuracy over –40°C to +160°C, eliminating need for external temperature compensation circuitry. |
| Clutch Actuator Feedback | Float-Level Sensing |
|
Use Scenario: Linear position feedback in dual-clutch transmission actuators exposed to oil immersion and vibration. IC Role / Device Role / Timing Role: MLX91377GGO-ADB-081-RE uses redundant die outputs to validate actuator stroke against expected PWM duty cycle. Use Value: Inter-die synchronicity <9.71 µs allows sub-millisecond differential diagnosis of mechanical slippage or sensor drift. |
Use Scenario: Fuel tank level measurement via float arm with embedded magnet, requiring long-term stability in wide thermal cycles. IC Role / Device Role / Timing Role: MLX91377GGO-ADB-081-RE leverages 48-bit programmable ID and NVRAM to store tank-specific calibration curves per vehicle VIN. Use Value: Total drift <3.0 LSB12 over lifetime enables 15+ year fuel gauge accuracy without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear Hall position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX91377GGO-ADB-080-RE | Identical dual-die TSSOP-16 package and SPC protocol, but configured for 1.5 µs tick time without optional diagnostic enhancements | Same torque/brake use cases; lacks extended diagnostic configuration bits present in -081 revision | Select -080-RE only if legacy ECU firmware does not support enhanced SPC status nibbles introduced in -081 |
| TLV493DW2B6HTSA1 | Single-die 3D Hall IC in TDSO-8; I²C interface; no ASIL certification; 12-bit resolution; ±150 mT Bz range | Suitable for non-safety-critical industrial position sensing, not automotive ASIL-B/C systems | Choose TLV493DW2B6HTSA1 only for cost-sensitive consumer or industrial designs where functional safety is not mandated |
Compared with MLX91377GGO-ADB-081-RE, the -080-RE variant offers identical hardware redundancy and timing but omits updated diagnostic flags, while TLV493DW2B6HTSA1 trades ASIL compliance and dual-die robustness for smaller footprint and I²C flexibility-making it unsuitable for torque-sensing in ADAS or braking systems.
Availability
MLX91377GGO-ADB-081-RE is available at Aetrix Electronics and suitable for automotive steering systems, brake-by-wire modules, and industrial linear actuators requiring stable component supply, long-lifecycle assurance, and AEC-Q100 Grade 0 compliance.
Supply support for MLX91377GGO-ADB-081-RE 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 magnetic sensing, infrared thermometry, and automotive ICs, with design centers in Europe and Asia and ISO/TS 16949-certified manufacturing.
The MLX91377 product line targets high-reliability automotive position sensing, specifically engineered for ASIL-C redundant torque and pedal sensors where magnetic immunity, thermal stability, and functional safety are non-negotiable.
FAQ
What is the functional safety classification of MLX91377GGO-ADB-081-RE?
The MLX91377GGO-ADB-081-RE is certified as an ASIL-C Safety Element out of Context (SEooC) for its SPC output mode per ISO 26262, with ASIL-B capability for analog output. This classification applies to the integrated safety mechanisms-including dual watchdogs, ECC-protected NVRAM, and broken-wire diagnostics-not the full system. MLX91377GGO-ADB-081-RE requires integration into a compliant safety architecture to achieve end-system ASIL-C.
Does MLX91377GGO-ADB-081-RE support analog output?
No, MLX91377GGO-ADB-081-RE is factory-configured exclusively for SPC (Short PWM Code) output per SAE J2716 APR2016 with 1.5 µs tick time. Analog output capability exists in the MLX91377 family (e.g., ADB-010 variants), but the -081 option code explicitly selects SPC mode and disables analog functionality at firmware level. MLX91377GGO-ADB-081-RE cannot be reprogrammed to analog output in the field.
What is the purpose of the dual-die architecture in MLX91377GGO-ADB-081-RE?
The dual-die architecture in MLX91377GGO-ADB-081-RE provides hardware-level redundancy: two independent Hall sensing chains, ADCs, DSPs, and SPC encoders share one TSSOP-16 package but operate on isolated power (VDD1/VDD2) and ground (VSS1/VSS2) rails. This enables real-time cross-checking of position data, fault detection via output divergence, and compliance with ASIL-C fault containment requirements. MLX91377GGO-ADB-081-RE achieves >4 MΩ inter-die isolation resistance per datasheet Table 6.
Can MLX91377GGO-ADB-081-RE be used in non-automotive applications?
Yes, MLX91377GGO-ADB-081-RE is technically suitable for industrial linear position sensing (e.g., hydraulic cylinder feedback, robotic joint encoders) due to its –40°C to +160°C operation, 12-bit SPC output, and robust EMC performance. However, its AEC-Q100 Grade 0 qualification, ASIL-C safety documentation, and dual-die redundancy are optimized for automotive safety-critical use. MLX91377GGO-ADB-081-RE remains valid for industrial applications demanding extreme reliability-but at higher cost than single-die alternatives.
How is the magnetic input span configured for MLX91377GGO-ADB-081-RE?
The magnetic input span (±10 mT to ±100 mT) of MLX91377GGO-ADB-081-RE is set via programmable gain registers (GAIN and DIG_GAIN) stored in NVRAM during calibration. The device does not auto-detect field range; instead, users configure gain to match the expected Bz span at the die surface-e.g., ±25 mT input requires ~82 LSB/mT digital gain to utilize full 12-bit output range. MLX91377GGO-ADB-081-RE supports multi-point calibration to correct for magnet and mechanical tolerances.
MLX91377GGO-ADB-081-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Hall Effect
- Axis:
- Single
- Output Type:
- SPC
- Sensing Range:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Supply (Max):
- 13.5mA
- Current - Output (Max):
- 35mA
- Resolution:
- 16 b
- Bandwidth:
- -
- Operating Temperature:
- -40°C ~ 160°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Features:
- Programmable, Temperature Compensated
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
MLX91377GGO-ADB-081-RE FAQ
1.How can I place an order for MLX91377GGO-ADB-081-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX91377GGO-ADB-081-RE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MLX91377GGO-ADB-081-RE reliable?
The price and inventory of MLX91377GGO-ADB-081-RE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX91377GGO-ADB-081-RE is usually 5 days.
3.What payment methods are accepted for MLX91377GGO-ADB-081-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX91377GGO-ADB-081-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX91377GGO-ADB-081-RE?
MLX91377GGO-ADB-081-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX91377GGO-ADB-081-RE order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MLX91377GGO-ADB-081-RE?
For technical support, including MLX91377GGO-ADB-081-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX91377GGO-ADB-081-RE requirements.
6.How does Aetrix verify that MLX91377GGO-ADB-081-RE is sourced from the original manufacturer or authorized distributors?
All MLX91377GGO-ADB-081-RE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MLX91377GGO-ADB-081-RE meets industry standards.
7.What is the process for return or replacement of MLX91377GGO-ADB-081-RE?
All MLX91377GGO-ADB-081-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX91377GGO-ADB-081-RE, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MLX91377GGO-ADB-081-RE part is unused and in its original packaging.
Return procedure for MLX91377GGO-ADB-081-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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