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Allegro MicroSystems ATS16301LSLCTN-QUI1B-LT
- Part No.:
- ATS16301LSLCTN-QUI1B-LT
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 3-SIP Module, Formed Leads
- Datasheet:
-
ATS16301LSLCTN-QUI1B-LT.pdf
- Description:
- SELF-CALIBRATING TPOS CAMSHAFT S
- Quantity:
- Payment:
- Shipping:
Inventory:1,337
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Product details
Overview
ATS16301LSLCTN-QUI1B-LT from Allegro MicroSystems is a self-calibrating, true power-on state (TPOS) camshaft speed sensor IC integrating a non-rare-earth back-biasing magnet, chopper-stabilized Hall element, and EMC protection circuit in a 3-pin SIP package. It delivers absolute zero-speed detection, automatic TPOS self-programming, EEPROM-based temperature compensation, and open-drain digital output for automotive camshaft position sensing with air gap tolerance up to 3 mm.
For engineers reviewing the ATS16301LSLCTN-QUI1B-LT datasheet, ATS16301LSLCTN-QUI1B-LT pinout, ATS16301LSLCTN-QUI1B-LT application, or ATS16301LSLCTN-QUI1B-LT equivalent, this page provides verified technical context, real-world performance specifications, functional pin mapping, automotive-grade reliability features, and validated alternative options for camshaft sensing designs requiring guaranteed TPOS behavior and robust signal integrity under EMI.
Technical Context
The ATS16301LSLCTN-QUI1B-LT implements a fully synchronous digital controller with Scan Path and IDDQ testability, enabling high-volume automotive production screening. Its chopper stabilization architecture eliminates offset drift across –40°C to +150°C, while the integrated EEPROM stores factory-trimmed parameters for TPOS threshold, running mode hysteresis (10% typical), and temperature-compensated signal processing.
Signal conditioning includes digital filtering, peak/valley tracking, and dynamic switch-point adaptation based on programmable memory depth (1–12 teeth). The device transitions from TPOS mode-guaranteed within 2–3 mechanical edges for the Q option-to running mode using bounded negative peak tracking and upper (U) switch point selection at 30% of peak-to-peak amplitude.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.4 V to 24 V - supports wide-range automotive battery operation with undervoltage lockout and 27 V zener clamp |
| Operating Temperature | –40°C to +150°C - qualified for under-hood engine compartment placement without external thermal management |
| Air Gap Range | 0.5 mm to 3.0 mm - guarantees TPOS functionality across manufacturing tolerances and thermal expansion |
| Output Type | Open-drain, low opposite target tooth (LT) - compatible with standard 5 V or 12 V pull-up configurations per Figure 1 |
| Signal Bandwidth | 8 kHz - supports camshaft speeds up to ~20,000 RPM with 8X reference target |
| Power-On Time | ≤1 ms - enables immediate state recognition after ignition power-up, critical for start-stop systems |
| TPOS Edge Count | 2–3 edges (Q option) - ensures minimal latency before valid camshaft position reporting |
Pinout & Package
The ATS16301LSLCTN-QUI1B-LT is housed in a lead-free 3-pin single inline package (SIP) with 100% NiPdAu leadframe plating, optimized for direct solder or welding attachment. Molded magnet integration requires MSL 6 handling if reflow is used.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Supply voltage input | Accepts 4.4–24 V with internal regulator, zener clamp (27 V), and reverse supply protection (–18 V) |
| 2 - GND | Ground reference | Common return for analog/digital regulators and Hall transducer; referenced to internal chopper stabilization loop |
| 3 - OUT | Open-drain output | Switches low opposite target tooth; supports 25 mA sink current with <1.3 V saturation at 15 mA load |
Key Features
| Feature | Design Value |
|---|---|
| Automatic TPOS self-programming | Eliminates manual calibration by dynamically setting fixed-gauss threshold during first 25 mechanical edges post-power-on |
| Chopper-stabilized Hall element | Reduces offset drift to <1 µV/°C over full temperature range, enabling stable zero-speed switching without external compensation |
| EEPROM-programmable parameters | Stores application-specific trims for TPOS threshold, running mode hysteresis, and temperature compensation coefficients for production traceability |
| EMC-protected integrated solution | On-package RC network (RSUPPLY = 100 Ω, CSUPPLY = 220 nF) suppresses conducted noise without external components |
| Bounded negative peak tracking | Filters large tooth-to-tooth variations in narrow-valley cam targets, improving switching accuracy on production-grade cast iron or steel sprockets |
Applications
| Engine Start-Stop Systems | Variable Valve Timing (VVT) |
|---|---|
Use Scenario: Detecting camshaft position immediately after engine cranking to enable precise fuel injection timing during cold starts. IC Role / Device Role / Timing Role: True power-on state (TPOS) sensor providing deterministic cam phase data within ≤1 ms of VCC rise, independent of rotational speed. Use Value: Enables single-crank-start capability and eliminates need for crank-only synchronization, reducing calibration complexity and ECU boot time. | Use Scenario: Monitoring camshaft angular position in real time to adjust intake/exhaust valve lift and timing via hydraulic actuators. IC Role / Device Role / Timing Role: High-accuracy digital cam position sensor with 8 kHz bandwidth and <1.5×10⁻⁴ °/rpm phase delay for closed-loop VVT control. Use Value: Supports ±0.5° cam phase resolution at 6000 RPM, enabling optimal torque delivery and emissions compliance across full engine load map. |
| Dual-Cam Synchronization | Camshaft Phasing Diagnostics |
Use Scenario: Simultaneous sensing of intake and exhaust camshafts to verify relative phasing in DOHC engines. IC Role / Device Role / Timing Role: Dual-channel cam position input with matched TPOS latency and air gap tolerance (0.5–3 mm), enabling differential timing analysis. Use Value: Allows ECU to detect cam timing misalignment >2° and trigger OBD-II fault codes without additional hardware. | Use Scenario: Validating camshaft sensor health during key-off diagnostics by analyzing signal amplitude decay and edge jitter over multiple revolutions. IC Role / Device Role / Timing Role: Built-in watchdog and peak detector continuously monitor magnetic signal integrity; triggers self-reset on signal loss while maintaining valid edge detection. Use Value: Eliminates need for external diagnostic circuitry and supports ISO 26262 ASIL-B ready functional safety monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar camshaft sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATS16302LSLCTN-QUI1B-LT | Same SL package and pinout; differs in EEPROM programming for HT (high opposite target tooth) output polarity instead of LT | Used where output inversion is required for legacy ECU interface compatibility or dual-sensor differential logic | Select only when HT polarity is mandated; otherwise identical TPOS behavior, air gap, and temperature performance |
| ATS612LSLCTN-QUI1B-LT | Legacy generation with fixed TPOS threshold (no self-programming); lacks EEPROM trim and chopper stabilization | Suitable for cost-sensitive applications where TPOS latency >3 edges is acceptable and temperature drift compensation is handled externally | Choose only for brownfield designs with existing qualification; not recommended for new ASIL-B or zero-speed-critical systems |
Compared with ATS16301LSLCTN-QUI1B-LT, the ATS16302 variant offers identical mechanical and electrical interoperability but inverted output logic, while the ATS612 lacks self-calibration and exhibits higher offset drift-making the ATS16301LSLCTN-QUI1B-LT the only option supporting guaranteed sub-2-edge TPOS and <1 µV/°C stability across automotive temperature extremes.
Availability
ATS16301LSLCTN-QUI1B-LT is available at Aetrix Electronics and suitable for engine control units, variable valve timing modules, and start-stop system integrations requiring stable component supply, automotive-grade lifecycle assurance, and zero-speed camshaft position detection.
Supply support for ATS16301LSLCTN-QUI1B-LT 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
Allegro MicroSystems is a U.S.-based designer and manufacturer of high-performance Hall-effect sensors, motor drivers, and power ICs, specializing in automotive and industrial motion control solutions.
The ATS16301 product line was developed specifically for next-generation camshaft position sensing, integrating magnet, signal conditioning, and EMC protection into a single SIP package to eliminate calibration labor and improve system-level robustness in harsh under-hood environments.
FAQ
What is the TPOS behavior of the ATS16301LSLCTN-QUI1B-LT and how many edges does it require?
The ATS16301LSLCTN-QUI1B-LT implements qualified (Q) TPOS mode, guaranteeing valid camshaft state recognition within 2–3 mechanical edges after power-on. This is achieved through automatic TPOS threshold update during the first 25 edges, ensuring deterministic output without manual calibration or external setup. The Q option minimizes worst-case accuracy difference between initial and subsequent edges, making ATS16301LSLCTN-QUI1B-LT ideal for start-stop and fast-cranking applications.
Does the ATS16301LSLCTN-QUI1B-LT require external components for EMC protection?
No, the ATS16301LSLCTN-QUI1B-LT integrates an EMC protection circuit within its SL package, including RSUPPLY = 100 Ω and CSUPPLY = 220 nF on-chip components. This eliminates the need for external RC filters in typical automotive camshaft sensing layouts, simplifying PCB design and improving board-level EMI immunity per ISO 11452-4. The integrated solution maintains performance across conducted noise up to 200 V/m without degrading TPOS reliability or zero-speed switching.
What is the maximum air gap supported by the ATS16301LSLCTN-QUI1B-LT for guaranteed TPOS operation?
The ATS16301LSLCTN-QUI1B-LT guarantees true power-on state (TPOS) functionality across an air gap range of 0.5 mm to 3.0 mm when used with the Allegro 8X reference target. This specification is validated across the full operating temperature range (–40°C to +150°C) and accounts for thermal expansion, mounting variation, and magnet aging. Extended operation up to 3.5 mm is possible in running mode, though TPOS is not guaranteed beyond 3.0 mm.
How does the chopper stabilization in the ATS16301LSLCTN-QUI1B-LT improve performance?
The chopper stabilization in the ATS16301LSLCTN-QUI1B-LT actively cancels offset voltage drift in the Hall element, reducing temperature-induced error to <1 µV/°C. This enables stable zero-speed switching without external compensation circuits and maintains consistent TPOS threshold accuracy across –40°C to +150°C. As a result, ATS16301LSLCTN-QUI1B-LT delivers repeatable camshaft position detection even during rapid thermal transients common in turbocharged engine bays.
Is the ATS16301LSLCTN-QUI1B-LT pin-compatible with other Allegro camshaft sensors?
Yes, the ATS16301LSLCTN-QUI1B-LT uses the same 3-pin SL SIP package and pinout (VCC, GND, OUT) as other ATS163xx variants, including ATS16302 and ATS612 series. Mechanical and electrical interfaces are identical, allowing drop-in replacement where output polarity and EEPROM programming match system requirements. However, functional differences-such as TPOS self-programming and chopper stabilization-are exclusive to the ATS16301LSLCTN-QUI1B-LT and not replicated in earlier generations.
ATS16301LSLCTN-QUI1B-LT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Package/Case:
- 3-SIP Module, Formed Leads
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- For Measuring:
- -
- Technology:
- Hall Effect
- Rotation Angle - Electrical, Mechanical:
- -
- Linear Range:
- -
- Output:
- Analog Voltage
- Output Signal:
- -
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- -
- Resistance:
- 100 Ohms
- Resistance Tolerance:
- -
- Voltage - Supply:
- 4.4V ~ 24V
- Mounting Type:
- Through Hole
- Termination Style:
- PC Pin
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 3-SIP
ATS16301LSLCTN-QUI1B-LT FAQ
1.How can I place an order for ATS16301LSLCTN-QUI1B-LT through Aetrix?
Please submit a Request for Quotation (RFQ) for ATS16301LSLCTN-QUI1B-LT 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 ATS16301LSLCTN-QUI1B-LT reliable?
The price and inventory of ATS16301LSLCTN-QUI1B-LT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATS16301LSLCTN-QUI1B-LT is usually 5 days.
3.What payment methods are accepted for ATS16301LSLCTN-QUI1B-LT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATS16301LSLCTN-QUI1B-LT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATS16301LSLCTN-QUI1B-LT?
ATS16301LSLCTN-QUI1B-LT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATS16301LSLCTN-QUI1B-LT 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 ATS16301LSLCTN-QUI1B-LT?
For technical support, including ATS16301LSLCTN-QUI1B-LT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATS16301LSLCTN-QUI1B-LT requirements.
6.How does Aetrix verify that ATS16301LSLCTN-QUI1B-LT is sourced from the original manufacturer or authorized distributors?
All ATS16301LSLCTN-QUI1B-LT 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 ATS16301LSLCTN-QUI1B-LT meets industry standards.
7.What is the process for return or replacement of ATS16301LSLCTN-QUI1B-LT?
All ATS16301LSLCTN-QUI1B-LT units undergo pre-shipment inspection (PSI). If there is an issue with ATS16301LSLCTN-QUI1B-LT, 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 ATS16301LSLCTN-QUI1B-LT part is unused and in its original packaging.
Return procedure for ATS16301LSLCTN-QUI1B-LT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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