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Allegro MicroSystems A33230LLHALT-YZ-S-AR-03
- Part No.:
- A33230LLHALT-YZ-S-AR-03
- Manufacturer:
- Allegro MicroSystems
- Category:
- Linear, Compass (ICs)
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
A33230LLHALT-YZ-S-AR-03.pdf
- Description:
- 3D HALL-EFFECT SENSOR WITH SINE/
- Quantity:
- Payment:
- Shipping:
Inventory:3,923
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Product details
Overview
A33230LLHALT-YZ-S-AR-03 from Allegro MicroSystems is a 3D Hall-effect sensor IC designed for high-accuracy angular position sensing of rotating magnet targets using orthogonal Y- and Z-axis Hall elements. It delivers ratiometric sine/cosine analog outputs, supports 300 G magnetic sensitivity, operates from 4.5–5.5 V, and is qualified to AEC-Q100 Grade 0 (–40°C to +150°C) for automotive powertrain and EPS applications.
For engineers reviewing the A33230LLHALT-YZ-S-AR-03 datasheet, A33230LLHALT-YZ-S-AR-03 pinout, A33230LLHALT-YZ-S-AR-03 application, or A33230LLHALT-YZ-S-AR-03 equivalent, this page provides verified technical context, validated pin functions, confirmed YZ-axis pre-programming, real-world angle error performance under dynamic correction, and direct alternatives with documented sensitivity and calibration differences.
Technical Context
The A33230LLHALT-YZ-S-AR-03 integrates vertical (Y) and planar (Z) Hall plates with orthogonal sensing axes, generating inherently 90° phase-separated sine/cosine outputs independent of air gap or pole pitch. Its front-end includes anti-aliasing low-pass filters and tuned filters before dual back-end amplifiers.
Output signals are ratiometric to VCC, with quiescent voltage fixed at VCC/2 ±125 mV over temperature. Native angle error is ±1.2° (1000 G) or ±2.2° (300 G); dynamic external correction reduces this to ±0.2°, enabled by real-time offset/amplitude tracking per rotation cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5–5.5 V - Enables direct connection to standard 5 V automotive rails without regulation. |
| Operating Temperature | –40°C to +150°C - Validated for engine bay and transmission control unit environments. |
| Magnetic Sensitivity | 3.6 mV/G (typ.) at 300 G - Delivers robust signal-to-noise ratio in low-field rotary sensing. |
| Orthogonality Error | ±1° - Ensures precise quadrature between Y/Z outputs without field-dependent calibration. |
| Dynamic Angle Accuracy | ±0.2° (max) - Achieved via real-time external amplitude/offset correction per 270° rotation. |
| Bandwidth | 50 kHz - Supports high-speed motor commutation up to 300,000 RPM with <6.7 µs response time. |
| Output Load Range | 8 kΩ to ∞ - Compatible with standard ADC input stages and low-power microcontroller interfaces. |
Pinout & Package
Package: 5-pin SOT23-W (LH), RoHS-compliant, matte-tin leadframe, footprint compatible with JEDEC MO-178AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTPUTA | Cosine output for YZ-axis pair - Ratiometric analog voltage referenced to VCC/2. |
| 2 | OUTPUTB | Sine output for YZ-axis pair - Provides 90° phase shift relative to OUTPUTA for angle computation. |
| 3 | NC | No-connect terminal - Must be tied to GND for optimal EMC performance per datasheet guidance. |
| 4 | GND | Analog ground reference - Shared return path for Hall front-end and output amplifiers. |
| 5 | VCC | Positive supply input - Powers all internal circuitry; clamped at 7 V for reverse/overvoltage protection. |
Key Features
| Feature | Design Value |
|---|---|
| Pre-programmed YZ-axis configuration | Factory-set orthogonal Y/Z sensing - Eliminates need for post-manufacture axis reconfiguration. |
| Ratiometric sine/cosine outputs | Output scale tracks VCC variation - Maintains angular accuracy across supply ripple or drift without external scaling. |
| Low quiescent current | 7.0 mA typical - Reduces thermal load in sealed modules and enables multi-sensor clusters. |
| AEC-Q100 Grade 0 qualification | Validated for 150°C ambient operation - Meets requirements for transmission, turbocharger, and e-axle position feedback. |
| Input-referred noise density | 4.5 mGrms/√Hz at 25°C - Enables sub-degree resolution in high-bandwidth motor control loops. |
Applications
| Automotive Electric Power Steering (EPS) | Transmission Gear Position Sensing |
|---|---|
Use Scenario: Real-time detection of steering column rotation angle for assist torque calculation and fault monitoring. IC Role / Device Role / Timing Role: Primary angular position transducer delivering synchronized Y/Z sine/cosine signals to MCU-based CORDIC engine. Use Value: ±0.2° dynamic angle accuracy ensures precise torque vectoring and meets ISO 26262 ASIL-B functional safety requirements. | Use Scenario: Monitoring gear selector shaft rotation in automatic transmissions to validate mechanical position against commanded state. IC Role / Device Role / Timing Role: Redundant position sensor co-located with primary resolver, providing independent analog feedback for diagnostic cross-check. Use Value: 50 kHz bandwidth and –40°C to +150°C operation enable reliable detection during hot-shift events and cold-start conditions. |
| Electric Motor Commutation (Traction Inverter) | Turbocharger Wastegate Actuator Feedback |
Use Scenario: High-speed rotor angle measurement for field-oriented control (FOC) of permanent magnet synchronous motors (PMSM). IC Role / Device Role / Timing Role: High-bandwidth 3D Hall sensor replacing resolvers in compact inverter designs where size and weight are critical. Use Value: 6.7 µs response time and 300 G sensitivity support accurate commutation up to 300,000 RPM with minimal latency. | Use Scenario: Closed-loop position feedback for variable geometry turbocharger (VGT) actuators exposed to exhaust manifold heat. IC Role / Device Role / Timing Role: Direct-mount angular sensor on wastegate lever arm, reporting absolute position to ECU for boost pressure regulation. Use Value: 150°C junction rating and ±125 mV QVO error over temperature ensure stable zero-point and gain across full thermal range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3D Hall angular position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMS AS5055A-DSO | 12-bit SPI digital output; requires external MCU for angle computation; no native sine/cosine analog outputs. | Used in space-constrained PCBs where digital interface and lower power (3.5 mA) are prioritized over analog signal chain simplicity. | Select when system already uses SPI-based sensor fusion and requires integrated diagnostics - not for direct analog replacement. |
| Melexis MLX90393ELD-ABA-000-TU | Triaxis I²C/TWI output; 16-bit resolution; supports XYZ simultaneous measurement; higher cost and larger 16-pin SOIC package. | Deployed in industrial servo drives requiring full 3-axis field vector capture and programmable gain/offset compensation. | Select when XYZ full-space field mapping is required - not for dedicated YZ rotary sensing with minimal BOM count. |
Compared with AMS AS5055A-DSO and Melexis MLX90393, the A33230LLHALT-YZ-S-AR-03 offers plug-and-play analog sine/cosine outputs with guaranteed orthogonality and automotive-grade thermal stability, eliminating ADC sampling synchronization and external computation overhead while maintaining the smallest footprint (SOT23-W) among the three.
Availability
A33230LLHALT-YZ-S-AR-03 is available at Aetrix Electronics and suitable for automotive electric power steering, transmission position feedback, and traction motor commutation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for A33230LLHALT-YZ-S-AR-03 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 and power ICs, founded in 1985 and headquartered in Manchester, NH.
The A33230 product line delivers 3D Hall-based angular position sensing for automotive powertrain and chassis systems, engineered specifically to replace resolvers and incremental encoders in harsh-environment motor control and actuation feedback applications.
FAQ
What is the pre-programmed axis configuration for A33230LLHALT-YZ-S-AR-03?
The A33230LLHALT-YZ-S-AR-03 is factory-configured for YZ-axis sensing - meaning its vertical Hall element measures along the Y-axis and its planar Hall element measures along the Z-axis. This orthogonal pairing generates inherent 90° phase separation between OUTPUTA (cosine) and OUTPUTB (sine), enabling direct arctangent-based angle computation without field-dependent calibration. No user programming is required to activate this mode.
Does A33230LLHALT-YZ-S-AR-03 require external linearization for automotive use?
Yes - while the A33230LLHALT-YZ-S-AR-03 provides ratiometric outputs and ±1° orthogonality, user-defined linearization and error compensation are explicitly required per the datasheet for automotive-grade angular accuracy. Native angle error reaches ±2.2° at 300 G; dynamic external correction (e.g., real-time peak detection) is needed to achieve the ±0.2° specification cited in production systems.
What is the maximum operating temperature and thermal resistance of A33230LLHALT-YZ-S-AR-03?
The A33230LLHALT-YZ-S-AR-03 is rated for –40°C to +150°C ambient operation and has a maximum junction temperature of 165°C. Its SOT23-W (LH) package exhibits a thermal resistance RθJA of 124°C/W on a 4-layer JEDEC-standard PCB. Power dissipation must be derated above 100°C ambient to maintain safe junction temperatures, with maximum PD dropping from ~1000 mW at 25°C to ~400 mW at 125°C.
Can A33230LLHALT-YZ-S-AR-03 be used with 3.3 V microcontrollers?
No - the A33230LLHALT-YZ-S-AR-03 requires a minimum supply voltage of 4.5 V and is specified only for 4.5–5.5 V operation. Its ratiometric outputs scale directly with VCC, so a 3.3 V supply would violate absolute maximum ratings and prevent proper biasing of internal amplifiers and Hall plates. A dedicated 5 V LDO or DC-DC regulator is required for interface with 3.3 V MCUs.
What is the purpose of Pin 3 (NC) on A33230LLHALT-YZ-S-AR-03?
Pin 3 on the A33230LLHALT-YZ-S-AR-03 is designated NC (Not Connected) but must be externally tied to GND for optimal electromagnetic compatibility (EMC) performance. This connection stabilizes internal reference nodes and reduces susceptibility to radiated emissions - a requirement explicitly stated in the datasheet's Pinout List and Typical Application Circuit. Leaving Pin 3 floating degrades noise immunity and may cause output instability.
A33230LLHALT-YZ-S-AR-03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Hall Effect
- Axis:
- Y, Z
- Output Type:
- Analog Voltage
- Sensing Range:
- ±30mT
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Supply (Max):
- 10mA
- Current - Output (Max):
- 1mA
- Resolution:
- 12 b
- Bandwidth:
- 75kHz
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Supplier Device Package:
- SOT-23W-5
- Mounting Type:
- Surface Mount
A33230LLHALT-YZ-S-AR-03 FAQ
1.How can I place an order for A33230LLHALT-YZ-S-AR-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for A33230LLHALT-YZ-S-AR-03 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 A33230LLHALT-YZ-S-AR-03 reliable?
The price and inventory of A33230LLHALT-YZ-S-AR-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A33230LLHALT-YZ-S-AR-03 is usually 5 days.
3.What payment methods are accepted for A33230LLHALT-YZ-S-AR-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A33230LLHALT-YZ-S-AR-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A33230LLHALT-YZ-S-AR-03?
A33230LLHALT-YZ-S-AR-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A33230LLHALT-YZ-S-AR-03 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 A33230LLHALT-YZ-S-AR-03?
For technical support, including A33230LLHALT-YZ-S-AR-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A33230LLHALT-YZ-S-AR-03 requirements.
6.How does Aetrix verify that A33230LLHALT-YZ-S-AR-03 is sourced from the original manufacturer or authorized distributors?
All A33230LLHALT-YZ-S-AR-03 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 A33230LLHALT-YZ-S-AR-03 meets industry standards.
7.What is the process for return or replacement of A33230LLHALT-YZ-S-AR-03?
All A33230LLHALT-YZ-S-AR-03 units undergo pre-shipment inspection (PSI). If there is an issue with A33230LLHALT-YZ-S-AR-03, 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 A33230LLHALT-YZ-S-AR-03 part is unused and in its original packaging.
Return procedure for A33230LLHALT-YZ-S-AR-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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