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Allegro MicroSystems A19570LUBBTN-RSWPH
- Part No.:
- A19570LUBBTN-RSWPH
- Manufacturer:
- Allegro MicroSystems
- Package:
- 2-SIP Module
- Datasheet:
-
A19570LUBBTN-RSWPH.pdf
- Description:
- LARGE AIR GAP, VIBRATION IMMUNE,
- Quantity:
- Payment:
- Shipping:
Inventory:3,179
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Product details
Overview
A19570LUBBTN-RSWPH from Allegro MicroSystems is a giant magnetoresistance (GMR) transmission speed and direction sensor IC in a 2-pin SIP (UB) package, delivering two-wire current-source output with 90 µs reverse pulse width, ASIL B safety rating, and vibration-immune operation up to 150°C ambient for automotive transmission applications.
For engineers reviewing the A19570LUBBTN-RSWPH datasheet, A19570LUBBTN-RSWPH pinout, A19570LUBBTN-RSWPH application, or A19570LUBBTN-RSWPH equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply guidance for legacy design support and obsolescence management.
Technical Context
The A19570LUBBTN-RSWPH implements SolidSpeed Digital Architecture with differential GMR sensing elements (E1–E4) and integrated BiCMOS signal conditioning to reject common-mode magnetic interference while maintaining accurate speed/direction detection over large air gaps. Its internal diagnostics continuously monitor regulator, front-end, and oscillator faults to support ASIL B compliance.
This variant uses reverse-pulse-width encoding (90 µs) and high-vibration-immunity mode (H), enabling robust operation during mechanical shock and transient target motion. It features EEPROM-based device traceability, integrated 10 nF ceramic capacitor, and operates across 4–24 V supply with ICC(LOW) = 7 mA typical and ICC(HIGH) = 14 mA typical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Protocol | Two-wire current-source pulse-width modulation: 90 µs reverse pulse width confirms rotation direction without external components |
| Supply Voltage Range | 4–24 V DC: supports wide automotive battery range including cold-crank (4 V) and load-dump (24 V) conditions |
| Operating Temperature | –40 to +150°C: qualified for under-hood transmission control module placement |
| Vibration Immunity | High (H) mode: tolerates ≥2× target cycle duration disturbances without false direction reporting |
| Magnetic Sensitivity | 5 G pk-pk minimum differential field: enables reliable switching at >2 mm air gap with standard ring magnets |
| Safety Certification | ASIL B compliant: integrated diagnostics detect regulator, front-end, and oscillator faults per ISO 26262 |
| Package | UB 2-pin SIP: overmolded single-in-line package with molded lead stabilizing bar and integrated 10 nF capacitor for EMC robustness |
Pinout & Package
Package: UB - 2-pin single-in-line package (SIP), overmolded, Pb-free with tin-plated leadframe, includes integrated 10 nF ceramic capacitor between pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply Voltage Input | Pin 1 accepts 4–24 V DC; incorporates zener clamp (28 V) and internal regulator for stable core operation |
| GND | Ground Reference | Pin 2 serves as return path for current-source output and internal circuitry; forms two-wire loop with VCC |
Key Features
| Feature | Design Value |
|---|---|
| GMR Differential Sensing | Four-element array (E1–E4) with 1.4 mm spacing enables inherent rejection of stray fields and operation at >2 mm air gap |
| Integrated Capacitor | 10 nF high-temperature ceramic capacitor embedded in UB package eliminates external decoupling and improves EMC immunity |
| ASIL B Diagnostics | Real-time monitoring of regulator, front-end, and oscillator faults with safe-state current output (IRESET = 3.5 mA typical) |
| Flexible Installation | Supports parallel, perpendicular, or intermediate orientation relative to ring magnet-no retooling required for Hall replacement |
| EEPROM Traceability | Built-in scratch memory stores manufacturing data for full production traceability and counterfeit prevention |
Applications
| Automotive Transmission Speed Sensing | Electric Powertrain Motor Control |
|---|---|
Use Scenario: Monitoring input/output shaft speed and direction in automatic and dual-clutch transmissions under high vibration and temperature cycling. IC Role / Device Role / Timing Role: GMR-based two-wire sensor providing pulse-width-encoded speed and direction signals to TCU via current-loop interface. Use Value: Enables precise gear-shift timing and torque management using only two wires, eliminating need for separate power and ground routing in constrained transmission housings. | Use Scenario: Detecting rotor position and direction in e-axle inverters and integrated transmission motors where space and EMI are critical. IC Role / Device Role / Timing Role: Direction-aware speed sensor feeding closed-loop motor control algorithms with vibration-immune pulse timing. Use Value: Maintains accurate commutation timing during road-induced vibration and thermal transients up to 150°C, reducing torque ripple and acoustic noise. |
| Off-Highway Vehicle Driveline Monitoring | Industrial Gearmotor Feedback |
Use Scenario: Measuring PTO and final drive shaft rotation in construction and agricultural machinery exposed to dust, shock, and wide temperature swings. IC Role / Device Role / Timing Role: Robust two-wire GMR sensor delivering direction-resolved speed pulses to vehicle controller over long cable runs. Use Value: Eliminates encoder slip and Hall drift issues in high-shock environments; 90 µs reverse pulse ensures unambiguous direction identification even during rapid reversals. | Use Scenario: Providing speed and direction feedback for closed-loop control of industrial gearmotors in conveyor, pump, and mixer systems. IC Role / Device Role / Timing Role: Compact, EMC-hardened sensor interfacing directly to PLC analog/digital inputs via current-loop signaling. Use Value: Reduces system BOM by integrating decoupling capacitance and diagnostics, while ASIL B compliance supports functional safety requirements in machinery control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GMR-based transmission speed and direction sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A19570LUBBTN-FSWPH | Same package and architecture but outputs 45 µs forward pulse width instead of 90 µs reverse pulse width; identical vibration immunity and ASIL B diagnostics | Designed for forward-rotation dominant applications (e.g., primary shaft sensing); requires matching firmware interpretation of pulse width | Select when forward-direction pulses are preferred for legacy software compatibility or directional bias in target motion profile |
| ATS6858LSGT-T | Two-wire GMR sensor with programmable pulse width (30–120 µs), wider operating voltage (3.3–26.5 V), but no integrated capacitor or EEPROM traceability | Lacks ASIL B certification and built-in diagnostics; requires external decoupling and traceability handling | Choose for cost-sensitive designs where ASIL B is not mandated and board space allows external capacitor placement |
Compared with A19570LUBBTN-RSWPH, the A19570LUBBTN-FSWPH offers identical hardware and safety features but encodes direction via forward-pulse width instead of reverse-requiring firmware alignment. The ATS6858LSGT-T provides greater pulse-width flexibility and voltage range but omits integrated EMC capacitance and ASIL B diagnostics, increasing system-level validation burden.
Availability
A19570LUBBTN-RSWPH is available at Aetrix Electronics and suitable for automotive transmission control, electric powertrain monitoring, and off-highway driveline applications requiring stable component supply despite end-of-life status.
Supply support for A19570LUBBTN-RSWPH 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 markets.
The A19570 product line delivers vibration-immune, large-air-gap GMR speed and direction sensing for transmission and driveline applications, designed to replace Hall-effect sensors with higher accuracy and reliability under harsh conditions.
FAQ
What does the "R" in A19570LUBBTN-RSWPH indicate?
The "R" in A19570LUBBTN-RSWPH specifies reverse-pulse-width encoding: the device outputs a 90 µs pulse width during reverse rotation (target feature moving from pin 2 to pin 1). This distinguishes direction without requiring additional signal lines or external decoding logic, and is confirmed in the A19570 datasheet Section "Configuration Options" and Figure 11.
Is A19570LUBBTN-RSWPH still in production?
No, A19570LUBBTN-RSWPH is discontinued as of December 16, 2025. Allegro MicroSystems has declared it a discontinued product with no new shipments or samples available. Aetrix Electronics maintains limited legacy stock for last-time-buy support and offers continuity planning for customers transitioning from A19570LUBBTN-RSWPH.
What is the function of the integrated capacitor in A19570LUBBTN-RSWPH?
The integrated 10 nF high-temperature ceramic capacitor in A19570LUBBTN-RSWPH is connected between VCC (pin 1) and GND (pin 2) to provide local supply decoupling and enhance EMC robustness. It eliminates the need for an external capacitor on the PCB, reducing layout complexity and improving immunity to conducted noise in automotive environments, as specified in the "INTERNAL DISCRETE CAPACITOR RATINGS" table.
How does A19570LUBBTN-RSWPH achieve ASIL B compliance?
A19570LUBBTN-RSWPH achieves ASIL B compliance through integrated diagnostics that continuously monitor regulator, front-end amplifier, and oscillator functionality. Upon detecting a fault, it enters a safe state with defined current output (IRESET = 1.5–3.9 mA) and error protocols (EP1/EP2), all certified under ISO 26262. This capability is documented in the "ASIL Safe State Output Protocol" section and Safety Manual referenced in the A19570 datasheet.
Can A19570LUBBTN-RSWPH replace Hall-effect sensors in existing designs?
Yes, A19570LUBBTN-RSWPH supports flexible orientation-including rotation to match Hall-effect mounting-and delivers two-wire current-loop output compatible with existing Hall interface circuits. Its differential GMR sensing provides superior air-gap tolerance and vibration immunity over Hall sensors, making it a drop-in upgrade in many transmission applications, as stated in the "Flexible orientation for xMR or Hall replacement" feature description.
A19570LUBBTN-RSWPH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 2-SIP Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Type:
- Hall Effect
- Output Type:
- Current
- Actuator Material:
- Magnet
- Termination Style:
- -
- Frequency:
- 12 kHz
- Voltage - Supply:
- 4V ~ 24V
- Must Operate:
- -
- Must Release:
- -
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
A19570LUBBTN-RSWPH FAQ
1.How can I place an order for A19570LUBBTN-RSWPH through Aetrix?
Please submit a Request for Quotation (RFQ) for A19570LUBBTN-RSWPH 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 A19570LUBBTN-RSWPH reliable?
The price and inventory of A19570LUBBTN-RSWPH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A19570LUBBTN-RSWPH is usually 5 days.
3.What payment methods are accepted for A19570LUBBTN-RSWPH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A19570LUBBTN-RSWPH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A19570LUBBTN-RSWPH?
A19570LUBBTN-RSWPH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A19570LUBBTN-RSWPH 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 A19570LUBBTN-RSWPH?
For technical support, including A19570LUBBTN-RSWPH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A19570LUBBTN-RSWPH requirements.
6.How does Aetrix verify that A19570LUBBTN-RSWPH is sourced from the original manufacturer or authorized distributors?
All A19570LUBBTN-RSWPH 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 A19570LUBBTN-RSWPH meets industry standards.
7.What is the process for return or replacement of A19570LUBBTN-RSWPH?
All A19570LUBBTN-RSWPH units undergo pre-shipment inspection (PSI). If there is an issue with A19570LUBBTN-RSWPH, 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 A19570LUBBTN-RSWPH part is unused and in its original packaging.
Return procedure for A19570LUBBTN-RSWPH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
A19570LUBBTN-RSWPH Tags
-
HS-3511-02-0300
PIC GmbH
-
ATS19480LSNBTN
Allegro MicroSystems
-
55100-2M-02-A
Littelfuse Inc.
-
55100-3H-02-A
Littelfuse Inc.
-
55100-3M-02-A
Littelfuse Inc.
-
55100-3M-03-A
Littelfuse Inc.
-
55100-3H-04-A
Littelfuse Inc.
-
55140-3H-02-A
Littelfuse Inc.
-
55100-AP-02-A
Littelfuse Inc.
-
GS101201
ZF Electronics
-
55505-00-02-A
Littelfuse Inc.
-
GS100701
ZF Electronics
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