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Allegro MicroSystems ATS699LSN-RSWPH-T
- Part No.:
- ATS699LSN-RSWPH-T
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 3-SSIP Module
- Datasheet:
-
ATS699LSN-RSWPH-T.pdf
- Description:
- SENSOR ROTARY SOLDER PAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,444
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Product details
Overview
ATS699LSN-RSWPH-T from Allegro MicroSystems is a two-wire, differential Hall-effect gear-tooth sensor IC with integrated back-biasing magnet and on-chip 10 nF supply capacitor. It delivers true zero-speed speed and direction output via pulse-width modulation (45 µs forward / 180 µs reverse), operates from 4–24 V, and supports air gaps up to 2.5 mm with vibration immunity in automotive transmission applications.
For engineers reviewing the ATS699LSN-RSWPH-T datasheet, ATS699LSN-RSWPH-T pinout, ATS699LSN-RSWPH-T application, or ATS699LSN-RSWPH-T equivalent, key selection criteria include its differential magnetic sensing architecture, programmable rotation direction (R = pin 3 → pin 1), wide-pulse (W) reverse output mode, high-vibration-immunity (H) algorithm, and lead-free 3-pin SIP package optimized for under-hood reliability.
Technical Context
The ATS699LSN-RSWPH-T employs dual differential Hall elements with synchronous digital controller, Automatic Gain Control (AGC), and proprietary offset adjustment to reject vibration-induced false pulses while maintaining accurate edge detection across varying air gaps. Its two-wire current-loop output uses variable pulse width (not frequency) to encode both speed (pulse rate) and direction (pulse duration).
This variant implements the -RSWPH configuration: Reverse-rotation sensing (R), Wide-pulse reverse output (W), High-vibration-immunity algorithm (H), and Pin 3 → Pin 1 forward rotation definition (F is inverted per R suffix). It blanks direction pulses during vibration transients and requires ≥1× TTARGET rotation to revalidate direction before resuming FWD/REV pulse output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4–24 V - Enables direct connection to automotive battery without external regulator |
| Output Protocol | Two-wire, current-sink PWM - Eliminates need for separate signal wire and reduces EMI susceptibility |
| Pulse Width (FWD/REV) | 45 µs (typ) / 180 µs (typ) - Unambiguous direction encoding independent of target speed or air gap |
| Air Gap Range | 0.5–2.5 mm with 60-tooth steel target - Supports mechanical tolerance and thermal expansion in transmission housings |
| Operating Temperature | –40 to +150 °C - Qualified for under-hood placement in automatic and dual-clutch transmissions |
| Vibration Immunity | Rejects engine-cranking vibration - Prevents false direction pulses during cranking and idle shake |
| Magnetic Input Range | 30–1200 G peak-to-peak differential - Accommodates wide variation in magnet strength and target geometry |
Pinout & Package
Package: 3-pin Single-In-Line (SIP), lead-free matte tin-plated leadframe, branded face orientation defined for optimal magnetic coupling to ferromagnetic gear targets.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply input - Dual VCC pins (1 & 2) share internal regulator and reduce IR drop in high-current pulses |
| 2 | VCC | Positive supply input - Electrically tied to Pin 1 internally; used for mechanical stability and current sharing |
| 3 | GND | Ground return - Serves as current-sink output reference; completes two-wire loop with load resistor RL |
Key Features
| Feature | Design Value |
|---|---|
| Dual differential Hall sensing | Rejects common-mode EMI and mechanical stress-induced offsets, enabling stable operation in noisy powertrain environments |
| Integrated 10 nF supply capacitor | Eliminates external ceramic capacitor, reducing BOM count and PCB area while improving ESD robustness |
| Programmable vibration immunity (H-mode) | Suppresses direction pulses during large-amplitude vibration and resumes only after validated constant rotation - prevents false gear engagement signals |
| True zero-speed operation | Detects stationary or near-zero RPM targets using phase comparison, critical for park/neutral detection and start-stop systems |
| Back-biased rare-earth magnet | Enables self-contained operation without external magnets; optimized field alignment for maximum signal-to-noise ratio at extended air gaps |
Applications
| Automatic Transmission Gear Detection | Electric Power Steering (EPS) Motor Position |
|---|---|
|
Use Scenario: Monitoring gear tooth passage on input shaft to determine engaged gear and clutch state in DCT/AT systems. IC Role / Device Role / Timing Role: Two-wire differential sensor providing direction-encoded pulses synchronized to mechanical rotation, immune to engine vibration. Use Value: Enables precise gear position feedback without additional signal conditioning, supporting ASIL-B functional safety requirements through deterministic pulse timing. |
Use Scenario: Sensing rotor position in brushless EPS motor for commutation and torque estimation. IC Role / Device Role / Timing Role: Zero-speed-capable Hall sensor delivering direction-resolved pulses to MCU for real-time angular tracking. Use Value: Delivers reliable low-RPM feedback during parking maneuvers where traditional encoders fail, improving steering assist accuracy at standstill. |
| Start-Stop System Crank Detection | Hybrid Vehicle e-CVT Speed Monitoring |
|
Use Scenario: Detecting crankshaft rotation initiation during engine restart to trigger fuel injection and spark timing. IC Role / Device Role / Timing Role: Vibration-tolerant gear-tooth sensor rejecting cranking noise while capturing first valid tooth edge. Use Value: Reduces restart latency by eliminating false vibration pulses, ensuring immediate and deterministic crank angle acquisition. |
Use Scenario: Measuring input/output shaft speeds in electric continuously variable transmissions for ratio control and slip monitoring. IC Role / Device Role / Timing Role: Differential Hall IC with wide air-gap capability sensing steel gears inside oil-filled e-CVT housings. Use Value: Maintains signal integrity despite oil contamination, temperature cycling, and mechanical misalignment-critical for closed-loop ratio control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar two-wire differential gear-tooth sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATS6858LSN-TN | Lacks integrated capacitor; requires external 10 nF; no vibration immunity algorithm; fixed narrow-pulse output (90 µs) | Suitable for lower-vibration environments (e.g., auxiliary pumps); not qualified for transmission cranking vibration rejection | Select when cost sensitivity outweighs vibration robustness and board space constraints allow external capacitor |
| APS12905KSA | Three-wire interface (VCC, GND, OUT); higher supply current (15–20 mA); no programmable H/L vibration mode | Better suited for non-automotive industrial gear sensing where wiring harness allows third wire and vibration is minimal | Choose when system architecture supports three-wire topology and higher power budget is acceptable for improved SNR |
Compared with ATS699LSN-RSWPH-T, ATS6858LSN-TN offers lower cost but sacrifices vibration resilience and integration; APS12905KSA provides higher signal fidelity at the expense of wiring complexity and power consumption-making ATS699LSN-RSWPH-T the optimal choice for space-constrained, high-reliability automotive transmission sensing.
Availability
ATS699LSN-RSWPH-T is available at Aetrix Electronics and suitable for automatic transmission control units, electric power steering modules, start-stop system crank sensors, and hybrid e-CVT speed monitoring requiring stable component supply across extended temperature and vibration profiles.
Supply support for ATS699LSN-RSWPH-T 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 semiconductor company specializing in high-performance magnetic sensing and power ICs for automotive and industrial motion control.
The ATS699 family is designed specifically for robust gear-tooth speed and direction sensing in automotive powertrain applications, emphasizing vibration immunity, zero-speed detection, and two-wire simplicity.
FAQ
What does the "RSWPH" suffix in ATS699LSN-RSWPH-T indicate?
The "RSWPH" suffix specifies the device configuration: R = reverse-rotation sensing logic (pin 3 → pin 1 defines forward rotation), S = single-pulse-per-tooth-valley pair, W = wide-pulse reverse output (180 µs typical), P = pulses during calibration, H = high-vibration-immunity algorithm. This exact configuration ensures deterministic direction validation after vibration events in transmission applications.
Does ATS699LSN-RSWPH-T require an external capacitor?
No. ATS699LSN-RSWPH-T integrates a 10 nF internal supply capacitor between VCC and GND, eliminating the need for external decoupling components. This reduces PCB footprint, improves ESD robustness, and simplifies layout-particularly valuable in space-constrained transmission control modules where routing density is high.
How does ATS699LSN-RSWPH-T handle vibration during engine cranking?
ATS699LSN-RSWPH-T uses proprietary vibration detection algorithms that distinguish between true target rotation and cranking-induced vibration. In H-mode, it suppresses directional pulses until ≥1× TTARGET of validated constant rotation occurs-ensuring no false gear engagement or neutral-detection errors during startup sequences.
What is the maximum air gap supported by ATS699LSN-RSWPH-T?
ATS699LSN-RSWPH-T supports an air gap range of 0.5–2.5 mm when used with the Allegro 60-0 reference target (60-tooth low-carbon steel gear). This wide range accommodates mechanical tolerances, thermal expansion, and housing deformation in automotive transmission assemblies without sacrificing signal integrity or direction accuracy.
Can ATS699LSN-RSWPH-T operate at true zero speed?
Yes. ATS699LSN-RSWPH-T delivers true zero-speed operation by detecting relative phase between its dual differential Hall channels-even when the target is stationary or rotating below 1 RPM. This enables critical functions like park/neutral detection, static gear verification, and start-stop system readiness confirmation.
ATS699LSN-RSWPH-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Package/Case:
- 3-SSIP Module
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- -
- For Measuring:
- Rotary Position
- Technology:
- Resistive
- Rotation Angle - Electrical, Mechanical:
- -
- Linear Range:
- -
- Output:
- Resistive
- Output Signal:
- Clockwise Increase
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- -
- Resistance:
- -
- Resistance Tolerance:
- -
- Voltage - Supply:
- 4V ~ 24V
- Mounting Type:
- Through Hole
- Termination Style:
- Solder Pad
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 3-SIP
ATS699LSN-RSWPH-T FAQ
1.How can I place an order for ATS699LSN-RSWPH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ATS699LSN-RSWPH-T 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 ATS699LSN-RSWPH-T reliable?
The price and inventory of ATS699LSN-RSWPH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATS699LSN-RSWPH-T is usually 5 days.
3.What payment methods are accepted for ATS699LSN-RSWPH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATS699LSN-RSWPH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATS699LSN-RSWPH-T?
ATS699LSN-RSWPH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATS699LSN-RSWPH-T 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 ATS699LSN-RSWPH-T?
For technical support, including ATS699LSN-RSWPH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATS699LSN-RSWPH-T requirements.
6.How does Aetrix verify that ATS699LSN-RSWPH-T is sourced from the original manufacturer or authorized distributors?
All ATS699LSN-RSWPH-T 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 ATS699LSN-RSWPH-T meets industry standards.
7.What is the process for return or replacement of ATS699LSN-RSWPH-T?
All ATS699LSN-RSWPH-T units undergo pre-shipment inspection (PSI). If there is an issue with ATS699LSN-RSWPH-T, 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 ATS699LSN-RSWPH-T part is unused and in its original packaging.
Return procedure for ATS699LSN-RSWPH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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