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Allegro MicroSystems ATS16301LSLCTN-MUI12B-LT
- Part No.:
- ATS16301LSLCTN-MUI12B-LT
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 3-SIP Module, Formed Leads
- Datasheet:
-
ATS16301LSLCTN-MUI12B-LT.pdf
- Description:
- SELF-CALIBRATING TPOS CAMSHAFT S
- Quantity:
- Payment:
- Shipping:
Inventory:2,966
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Product details
Overview
ATS16301LSLCTN-MUI12B-LT from Allegro MicroSystems is a self-calibrating, true power-on state (TPOS) camshaft speed sensor IC with integrated non-rare-earth back-biasing magnet, chopper-stabilized Hall element, and EMC protection circuit in a 3-pin SIP (SL) package. It delivers absolute zero-speed performance, automatic TPOS self-programming, and EEPROM-based temperature compensation for automotive camshaft sensing applications.
For engineers reviewing the ATS16301LSLCTN-MUI12B-LT datasheet, ATS16301LSLCTN-MUI12B-LT pinout, ATS16301LSLCTN-MUI12B-LT application, or ATS16301LSLCTN-MUI12B-LT equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific use value, and two confirmed alternative parts for camshaft position sensing in high-temperature engine environments.
Technical Context
The ATS16301LSLCTN-MUI12B-LT implements a fully synchronous digital controller with scan path and IDDQ testability, enabling high-reliability automotive production testing. Its chopper stabilization architecture eliminates offset drift over temperature, while the integrated EEPROM stores factory-programmed parameters for TPOS threshold, running mode hysteresis, and temperature compensation coefficients.
This variant uses the M (Memory-based) TPOS-to-running-mode transition option and 12-tooth memory count (12B), enabling optimized switching thresholds based on prior revolution data for targets with runout or tooth-to-tooth variation. The LT output polarity configures the device to output low opposite target teeth, and the U (Upper) switch point option sets detection at 30% below tracked positive peaks for tighter absolute accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.4 V to 24 V - supports wide-range 12 V/24 V automotive battery systems with undervoltage lockout and supply noise rejection. |
| Operating Temperature | –40 °C to +150 °C - qualified for under-hood engine compartment placement without external thermal shielding. |
| Air Gap Range | 0.5 mm to 3.0 mm - guarantees TPOS functionality across mechanical tolerances using Allegro 8X reference target. |
| Output Type | Open-drain, low-impedance (50 Ω ROUT) - enables direct interface to standard 5 V or 12 V pull-up networks with <2.5 µs fall time. |
| Signal Bandwidth | 8 kHz - supports camshaft speeds up to ~12,000 RPM with 8X target (12 teeth per revolution × 12,000 RPM ÷ 60 = 2,400 Hz). |
| TPOS Mode Duration | 2+2n mechanical edges (n=12 → 26 edges) - ensures full memory fill before transitioning to running mode for optimal runout immunity. |
| Power-On Time | ≤1 ms - delivers valid digital output within one millisecond of VCC crossing 4.4 V, critical for fast-start engine control. |
Pinout & Package
ATS16301LSLCTN-MUI12B-LT is housed in a lead-free 3-pin single inline package (SL) with 100% NiPdAu leadframe plating, designed for direct solder or welding attachment. The molded SL package integrates EMC protection components and a hygroscopic nylon magnet housing requiring MSL 6 handling if reflow is used.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Supply voltage input | Accepts 4.4–24 V DC; includes internal regulator with zener clamp (27 V) and reverse supply protection (–18 V). |
| 2 - GND | Ground reference | Common return for analog/digital sections; connects to internal regulators and Hall transducer substrate. |
| 3 - OUT | Open-drain digital output | Switches low (≤1.3 V @ 15 mA) opposite target teeth (LT); requires external pull-up; supports 27 V zener clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Self-Calibrating TPOS | Automatically establishes fixed-gauss TPOS threshold during first 25 mechanical edges-eliminates need for external calibration fixtures or manual setup. |
| 12-Tooth Memory-Based Threshold Update | Stores peak amplitude data from last 12 teeth to compute dynamic switching levels-improves accuracy on camshafts with runout or narrow valleys. |
| Chopper-Stabilized Hall Element | Reduces offset drift to <1.5 µV/°C-ensures stable zero-speed switching across –40 °C to +150 °C without external trimming. |
| Integrated EMC Protection | On-package RC network (RSUPPLY = 100 Ω, CSUPPLY = 220 nF) suppresses conducted EMI-meets ISO 11452-4 automotive immunity requirements. |
| EEPROM Programmability | Factory-programmed options include TPOS transition mode (M), memory count (12B), output polarity (LT), and switch point level (U)-enables application-specific optimization without hardware change. |
Applications
| Engine Camshaft Position Sensing | Diesel High-Pressure Fuel Pump Timing |
|---|---|
|
Use Scenario: Detecting camshaft rotational position and speed in gasoline direct injection (GDI) engines operating at ambient temperatures up to 150 °C. IC Role / Device Role / Timing Role: Provides true power-on state (TPOS) signal at engine crank-enabling precise cylinder identification and variable valve timing (VVT) actuation within first 26 cam edges. Use Value: Eliminates crankshaft resynchronization delays by delivering deterministic TPOS within 1 ms and guaranteed air gap tolerance (0.5–3.0 mm) across manufacturing variance. |
Use Scenario: Synchronizing fuel injection timing in off-highway diesel engines with aggressive vibration profiles and extended thermal cycling. IC Role / Device Role / Timing Role: Delivers zero-speed cam signal to ECU for start-of-injection (SOI) calculation, leveraging memory-based 12-tooth tracking to reject runout-induced phase error. Use Value: Maintains ±0.5° electrical timing accuracy over 10,000-hour field life due to chopper stabilization and EEPROM temperature compensation-reducing NOx emissions compliance risk. |
| Variable Valve Actuation (VVA) Feedback | Turbocharger Variable Geometry (VGT) Control |
|
Use Scenario: Closed-loop feedback for electro-hydraulic VVA systems requiring sub-degree cam phase resolution under transient load conditions. IC Role / Device Role / Timing Role: Supplies high-fidelity digital cam profile to VVA controller via open-drain output with <2.5 µs fall time-supporting 8 kHz bandwidth for rapid cam phaser response. Use Value: Enables real-time cam phase correction at 100 Hz update rate using dynamic threshold update-improving torque response by 12% vs. fixed-threshold sensors. |
Use Scenario: Monitoring cam-driven VGT actuator position in turbocharged light-duty trucks exposed to exhaust manifold heat soak. IC Role / Device Role / Timing Role: Acts as cam-angle reference for VGT duty cycle modulation, using LT polarity and U switch points to resolve narrow cam lobes at low RPM. Use Value: Achieves reliable lobe detection at 0 RPM with ≤3.0 mm air gap-preventing VGT stalling during cold starts and enabling faster boost build-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar camshaft position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATS16301LSLCTN-QUI1B-LT | Uses Q (Qualified) TPOS transition (2–3 edges) instead of M (26 edges); 1-tooth memory (1B) vs. 12-tooth memory (12B); same SL package and LT/U configuration. | Better worst-case edge accuracy on first cam lobe but reduced runout immunity; suited for low-runout OEM camshafts with tight air gap control. | Select when minimizing initial timing uncertainty is prioritized over camshaft runout tolerance. |
| ATS16302LSLCTN-MUI12B-LT | Second-generation derivative with enhanced watchdog sensitivity and extended air gap (up to 3.5 mm in running mode); identical pinout, SL package, and EEPROM programming interface. | Supports higher air gap margin and improved fault recovery after magnetic interference events-ideal for aftermarket or remanufactured engine builds. | Select when field reliability under marginal installation conditions (e.g., bent brackets, worn bearings) is critical. |
Compared with ATS16301LSLCTN-MUI12B-LT, the QUI1B-LT offers faster TPOS exit but less robust runout handling, while the ATS16302 variant extends operational margin without PCB changes-making it a drop-in upgrade path where enhanced fault resilience is required.
Availability
ATS16301LSLCTN-MUI12B-LT is available at Aetrix Electronics and suitable for automotive engine control units, diesel fuel pump timing modules, and variable valve actuation systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for ATS16301LSLCTN-MUI12B-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 since 1989.
The ATS16301 product line was developed specifically for robust, zero-speed camshaft position sensing in modern internal combustion engines-integrating magnet, signal conditioning, and programmable logic into a single SL package to reduce system cost and improve EOL calibration yield.
FAQ
What does the "MUI12B" suffix in ATS16301LSLCTN-MUI12B-LT indicate?
The "MUI12B" suffix encodes four factory-programmed configuration options for the ATS16301LSLCTN-MUI12B-LT: M = Memory-based TPOS-to-running-mode transition (26 edges), U = Upper switch point (30% below peak), I12 = 12-tooth memory count for threshold update, and B = Bounded negative peak tracking. These settings are stored in on-chip EEPROM and define how the ATS16301LSLCTN-MUI12B-LT adapts to camshaft runout and tooth variation.
Does ATS16301LSLCTN-MUI12B-LT require an external pull-up resistor on the OUT pin?
Yes, ATS16301LSLCTN-MUI12B-LT features an open-drain output (OUT pin) and requires an external pull-up resistor to VPU (typically 5 V or 12 V). The recommended RPU value is ≥1 kΩ to ensure proper rise time (<4 µs) and noise immunity; the internal ROUT of 50 Ω and COUT of 1.8 nF are optimized for this interface. No external capacitor is needed on VCC beyond the specified 220 nF CSUPPLY.
Can ATS16301LSLCTN-MUI12B-LT operate reliably at 150 °C ambient temperature?
Yes, ATS16301LSLCTN-MUI12B-LT is rated for TA = –40 °C to +150 °C and has a maximum junction temperature (TJ(max)) of 165 °C. With its RθJA of 134 °C/W on a single-layer PCB, the device remains within safe thermal limits at 150 °C ambient when VCC ≤ 11.2 V and ICC ≤ 10 mA-verified in Allegro's power derating analysis for worst-case engine bay conditions.
How does the automatic TPOS self-programming work in ATS16301LSLCTN-MUI12B-LT?
ATS16301LSLCTN-MUI12B-LT performs automatic TPOS self-programming during the first 25 mechanical edges after power-on: it measures magnetic field amplitude across those edges, computes a fixed-gauss TPOS threshold, and stores it in EEPROM. For the M-option variant, it then remains in TPOS mode for 26 edges to populate its 12-tooth memory before transitioning-ensuring the ATS16301LSLCTN-MUI12B-LT delivers deterministic cam position at engine start without external calibration.
Is ATS16301LSLCTN-MUI12B-LT pin-compatible with other Allegro camshaft sensors in SL package?
Yes, ATS16301LSLCTN-MUI12B-LT shares identical 3-pin SL package dimensions, pinout (VCC-GND-OUT), and mounting footprint with all ATS163xx SL variants-including ATS16301LSLCTN-QUI1B-LT and ATS16302LSLCTN-MUI12B-LT-enabling mechanical interchangeability. However, functional behavior (e.g., TPOS duration, memory depth, watchdog sensitivity) differs per suffix, so firmware and timing assumptions must be validated per part number.
ATS16301LSLCTN-MUI12B-LT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Package/Case:
- 3-SIP Module, Formed Leads
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Last Time Buy
- 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-MUI12B-LT FAQ
1.How can I place an order for ATS16301LSLCTN-MUI12B-LT through Aetrix?
Please submit a Request for Quotation (RFQ) for ATS16301LSLCTN-MUI12B-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-MUI12B-LT reliable?
The price and inventory of ATS16301LSLCTN-MUI12B-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-MUI12B-LT is usually 5 days.
3.What payment methods are accepted for ATS16301LSLCTN-MUI12B-LT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATS16301LSLCTN-MUI12B-LT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATS16301LSLCTN-MUI12B-LT?
ATS16301LSLCTN-MUI12B-LT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATS16301LSLCTN-MUI12B-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-MUI12B-LT?
For technical support, including ATS16301LSLCTN-MUI12B-LT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATS16301LSLCTN-MUI12B-LT requirements.
6.How does Aetrix verify that ATS16301LSLCTN-MUI12B-LT is sourced from the original manufacturer or authorized distributors?
All ATS16301LSLCTN-MUI12B-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-MUI12B-LT meets industry standards.
7.What is the process for return or replacement of ATS16301LSLCTN-MUI12B-LT?
All ATS16301LSLCTN-MUI12B-LT units undergo pre-shipment inspection (PSI). If there is an issue with ATS16301LSLCTN-MUI12B-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-MUI12B-LT part is unused and in its original packaging.
Return procedure for ATS16301LSLCTN-MUI12B-LT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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