My Inquiry
My Account
Allegro MicroSystems AAS33001LLPBTR-5-DD
- Part No.:
- AAS33001LLPBTR-5-DD
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 24-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
AAS33001LLPBTR-5-DD.pdf
- Description:
- ASIL ANGLE SENSOR W/ LINEARIZATI
- Quantity:
- Payment:
- Shipping:
Inventory:2,096
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AAS33001LLPBTR-5-DD from Allegro MicroSystems is a dual-die 360° contactless angle sensor IC based on circular vertical Hall (CVH) technology, delivering 12-bit or 15-bit angular position data with ≤1.38° hysteresis and <±0.4° angle error at 25°C. It supports SPI (up to 10 MHz), PWM (98 Hz–3.125 kHz), and selectable ABI/UVW outputs, and operates from 3.7 V to 18 V across –40°C to 150°C for automotive electronic power steering (EPS) and BLDC motor commutation.
For engineers reviewing the AAS33001LLPBTR-5-DD datasheet, AAS33001LLPBTR-5-DD pinout, AAS33001LLPBTR-5-DD application, or AAS33001LLPBTR-5-DD equivalent, key selection considerations include its dual-die ASIL D capability, 24-pin eTSSOP package with thermal pad, 32-segment on-chip linearization, 100-cycle EEPROM for calibration storage, and support for both 3.3 V and 5 V SPI interfaces.
Technical Context
The AAS33001LLPBTR-5-DD implements a stacked dual-die architecture in a single 24-pin eTSSOP package, with independent die-level SPI (SCLK_1/MISO_1/MOSI_1/CS_1 and SCLK_2/MISO_2/MOSI_2/CS_2), dual PWM outputs, and redundant ABI/UVW channels. Each die integrates a CVH front end, ΣΔ ADC, digital signal processing, and on-chip 32-segment linearization to correct magnet misalignment and imperfect magnetization errors.
It supports ASIL D fail-operational safety when integrated per the AAS33001 Safety Manual, featuring LBIST, CVH self-test, watchdog timers, 4-bit SPI CRC, and ECC-enabled EEPROM. The device enables diagnostic coverage via programmable error signaling on PWM (e.g., 5% duty cycle = watchdog error) and delivers 1 µs angle refresh rate with ≤10 µs latency on ABI/UVW outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Angle Resolution | 12-bit or 15-bit via SPI; 12-bit fixed on PWM; configurable resolution on ABI/UVW - enables high-precision closed-loop control in EPS and transmission actuators. |
| Angle Error | ±0.4° max at 25°C, B = 300 G, ideal alignment - ensures accurate rotor position feedback without external calibration. |
| Operating Voltage | 3.7 V to 18 V, absolute max 28 V - supports direct 12 V battery connection and ISO 7637-2 Pulse 5b (39 V) transient immunity. |
| Temperature Range | –40°C to 150°C ambient - qualified for under-hood automotive environments including EPS and EPB systems. |
| SPI Interface | Up to 10 MHz clock, 3.3 V or 5 V logic compatible - allows low-latency angle and diagnostic reads; supports daisy-chaining multiple ICs on same bus. |
| Linearization | On-chip 32-segment correction - compensates for mechanical misalignment and target magnet non-uniformity, reducing system-level calibration effort. |
| EEPROM | 100 read/write cycles, single-bit ECC, dual-bit error detection - stores factory and customer calibration parameters with robust data integrity. |
Pinout & Package
The AAS33001LLPBTR-5-DD is housed in a 24-pin eTSSOP (LP-24) package with exposed thermal pad, 1 mm profile for minimal air gap to target magnet, Pb-free construction, and 100% matte tin leadframe plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS_1, CS_2 | SPI chip-select (active low) | Independent enable for each die's SPI interface; allows isolated communication or synchronized multi-die reads. |
| SCLK_1, SCLK_2 | SPI clock input | Supports up to 10 MHz operation; enables deterministic timing for safety-critical angle updates. |
| MOSI_1, MOSI_2 | SPI data input | Used for configuration writes and Manchester address selection; supports production-line EEPROM programming over VCC/PWM if pins are limited. |
| MISO_1, MISO_2 | SPI data output | Delivers angle, diagnostics, and status registers with 4-bit CRC; supports daisy-chain topology. |
| A_1/U_1, A_2/U_2 | Quadrature A or motor phase U output | Selectable ABI or UVW mode per die; push-pull output with ≤10 µs latency for real-time BLDC commutation. |
| PWM_1, PWM_2 | Pulse-width modulated angle output | Duty cycle proportional to angle (5–95%); built-in error codes (e.g., 5% = watchdog failure) simplify system diagnostics. |
| VCC_1, VCC_2 | Power supply inputs | Independent supplies per die enhance fault isolation; supports 3.7–18 V with internal regulator and bypass (BYP_1/BYP_2). |
| GND_1, GND_2, GND | Ground terminals | Three dedicated ground pins minimize noise coupling between analog, digital, and power domains. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-die ASIL D architecture | Stacked die construction with independent signal paths enables redundant sensing and channel-to-channel matching for fail-operational automotive safety systems. |
| 32-segment on-chip linearization | Corrects angular errors caused by magnet-to-sensor misalignment or non-ideal magnetization without requiring external lookup tables or host MCU computation. |
| Multi-format outputs | Simultaneous SPI (low-latency diagnostics), PWM (instant startup position), and ABI/UVW (high-resolution commutation) reduce system BOM and simplify integration across ECU architectures. |
| EEPROM-based calibration storage | 100-cycle endurance with ECC allows field-updatable offset, gain, and linearization parameters - eliminates need for post-assembly calibration fixtures. |
| Robust automotive qualification | AEC-Q100 Grade 0 compliant; withstands –40°C to 150°C, reverse battery (–18 V), and ISO 7637-2 transients - suitable for EPS, EPB, and transmission actuator modules. |
Applications
| Electronic Power Steering (EPS) | Electronic Parking Brake (EPB) |
|---|---|
Use Scenario: Real-time measurement of steering column rotation angle for assist torque calculation and active return control. IC Role / Device Role / Timing Role: Primary 360° angle sensor providing 12-bit position data via ABI interface with ≤10 µs latency to MCU for closed-loop torque control. Use Value: On-chip linearization reduces sensitivity to magnet mounting tolerances, enabling lower-cost mechanical assemblies while maintaining <±0.5° total system error. | Use Scenario: Monitoring caliper motor shaft position during parking brake engagement and release sequences. IC Role / Device Role / Timing Role: Dual-die AAS33001LLPBTR-5-DD delivers redundant angle data via independent SPI and UVW outputs for ASIL D-compliant brake actuation logic. Use Value: Stacked die architecture provides inherent channel matching and fault detection, eliminating need for external cross-checking circuitry in safety-critical brake control units. |
| BLDC Motor Commutation | Transmission Actuator Position Sensing |
Use Scenario: Rotor position feedback for 3-phase brushless DC pumps in engine cooling or HVAC systems. IC Role / Device Role / Timing Role: UVW output directly drives gate driver ICs; PWM provides initial position at startup before ABI lock-in. Use Value: 1 µs angle refresh rate and programmable ABI slew time ensure precise commutation timing across 0–15,000 rpm, reducing torque ripple and acoustic noise. | Use Scenario: Gear position detection in automatic transmission shift-by-wire actuators. IC Role / Device Role / Timing Role: High-accuracy 360° angle measurement with 15-bit SPI readout and EEPROM-stored calibration for gear selector feedback. Use Value: 32-segment linearization compensates for magnetic field distortion caused by nearby ferrous transmission housings, improving position repeatability to ±0.3° over lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar angle sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AAS33001LLPBTR-DD | Same dual-die eTSSOP-24 package, but 3.3 V SPI interface only - lacks 5 V logic compatibility. | Requires 3.3 V host MCU; unsuitable for mixed-voltage systems where 5 V SPI peripherals coexist. | Select when system uses only 3.3 V controllers and cost optimization is prioritized over interface flexibility. |
| A1333LLETR-2 | Single-die predecessor; no on-chip linearization, lower diagnostic coverage, ASIL B only, 14-pin TSSOP package. | Limited to non-redundant ASIL B applications; requires external calibration and offers no EEPROM-based parameter storage. | Choose for legacy designs migrating from A1333 where dual-die redundancy and ASIL D are not required. |
Compared with AAS33001LLPBTR-DD and A1333LLETR-2, the AAS33001LLPBTR-5-DD uniquely supports 5 V SPI logic, dual-die ASIL D compliance, and embedded 32-segment linearization - making it the only option for new high-safety automotive platforms requiring voltage-flexible, self-calibrating, redundant angle sensing.
Availability
AAS33001LLPBTR-5-DD is available at Aetrix Electronics and suitable for electronic power steering (EPS), transmission actuator control, and BLDC motor commutation requiring stable component supply, long-term lifecycle management, and AEC-Q100-qualified performance.
Supply support for AAS33001LLPBTR-5-DD 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, headquartered in Manchester, NH, serving automotive, industrial, and consumer markets since 1989.
The AAS33001 product line delivers precision contactless angle sensing for safety-critical automotive subsystems, with dual-die variants engineered specifically for ASIL D-compliant EPS, EPB, and transmission actuation systems.
FAQ
What is the operating voltage range for the AAS33001LLPBTR-5-DD?
The AAS33001LLPBTR-5-DD operates from 3.7 V to 18 V supply voltage, with an absolute maximum rating of 28 V continuous. Its internal regulator supports both 3.3 V and 5 V SPI logic levels, and it withstands ISO 7637-2 Pulse 5b transients up to 39 V - making it suitable for direct 12 V battery connection in automotive environments. This wide range ensures reliable operation across cold-crank and load-dump conditions.
Does the AAS33001LLPBTR-5-DD support ASIL D compliance?
Yes, the AAS33001LLPBTR-5-DD is designed to meet ASIL D requirements when integrated per the AAS33001 Safety Manual. Its dual-die architecture provides hardware redundancy, and it includes LBIST, CVH self-test, oscillator watchdogs, 4-bit SPI CRC, and ECC-enabled EEPROM to achieve high diagnostic coverage. Safety validation remains the responsibility of the end customer's system-level implementation and analysis.
How does the on-chip 32-segment linearization improve accuracy in the AAS33001LLPBTR-5-DD?
The AAS33001LLPBTR-5-DD uses on-chip 32-segment linearization to correct angular errors arising from magnet-to-sensor misalignment or non-uniform magnetization. By applying programmable correction coefficients stored in EEPROM, it converts raw electrical angles into precise mechanical angles - reducing system-level calibration effort and enabling tighter mechanical tolerances. This feature is especially valuable in EPS and transmission actuators where housing-induced field distortion is common.
What output interfaces does the AAS33001LLPBTR-5-DD provide?
The AAS33001LLPBTR-5-DD provides three concurrent output formats: SPI (up to 10 MHz, 3.3 V or 5 V compatible), PWM (programmable 98 Hz–3.125 kHz with diagnostic duty-cycle encoding), and selectable ABI quadrature or UVW motor commutation outputs. Each die has independent interfaces, allowing simultaneous use of SPI for diagnostics and ABI/UVW for real-time control - simplifying integration in complex automotive ECUs.
Is the AAS33001LLPBTR-5-DD pin-compatible with earlier Allegro angle sensors?
Yes, the AAS33001LLPBTR-5-DD is pin-compatible with the dual-die A1333 devices in the 24-pin eTSSOP package, enabling drop-in migration. However, it adds significant enhancements including on-chip 32-segment linearization, ASIL D support, EEPROM-based calibration storage, and dual-voltage SPI - all while maintaining identical footprint and pin assignments for CS, SCLK, MOSI, MISO, PWM, and ABI/UVW signals.
AAS33001LLPBTR-5-DD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- For Measuring:
- Angle
- Technology:
- Hall Effect
- Rotation Angle - Electrical, Mechanical:
- 0° ~ 360°
- Linear Range:
- -
- Output:
- PWM
- Output Signal:
- Clockwise Increase
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- -
- Resistance:
- -
- Resistance Tolerance:
- -
- Voltage - Supply:
- 3.7V ~ 18V
- Mounting Type:
- Surface Mount
- Termination Style:
- SMD (SMT) Tab
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 24-TSSOP-EP
AAS33001LLPBTR-5-DD FAQ
1.How can I place an order for AAS33001LLPBTR-5-DD through Aetrix?
Please submit a Request for Quotation (RFQ) for AAS33001LLPBTR-5-DD 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 AAS33001LLPBTR-5-DD reliable?
The price and inventory of AAS33001LLPBTR-5-DD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AAS33001LLPBTR-5-DD is usually 5 days.
3.What payment methods are accepted for AAS33001LLPBTR-5-DD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAS33001LLPBTR-5-DD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AAS33001LLPBTR-5-DD?
AAS33001LLPBTR-5-DD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AAS33001LLPBTR-5-DD 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 AAS33001LLPBTR-5-DD?
For technical support, including AAS33001LLPBTR-5-DD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAS33001LLPBTR-5-DD requirements.
6.How does Aetrix verify that AAS33001LLPBTR-5-DD is sourced from the original manufacturer or authorized distributors?
All AAS33001LLPBTR-5-DD 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 AAS33001LLPBTR-5-DD meets industry standards.
7.What is the process for return or replacement of AAS33001LLPBTR-5-DD?
All AAS33001LLPBTR-5-DD units undergo pre-shipment inspection (PSI). If there is an issue with AAS33001LLPBTR-5-DD, 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 AAS33001LLPBTR-5-DD part is unused and in its original packaging.
Return procedure for AAS33001LLPBTR-5-DD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AAS33001LLPBTR-5-DD Tags
-
TLV493DA1B6HTSA2
Infineon Technologies
-
EVW-AE4001B14
Panasonic Electronic Components
-
3382G-1-103G
Bourns Inc.
-
TLE5501E0001XUMA1
Infineon Technologies
-
HAL830UT-A
TDK-Micronas GmbH
-
TLE5009E1000FUMA1
Infineon Technologies
-
TLE5501E0002XUMA1
Infineon Technologies
-
HAL3725DJ-A
TDK-Micronas GmbH
-
HAL3727DJ-A
TDK-Micronas GmbH
-
HMC1501-TR
Honeywell Aerospace
-
HMC1512-TR
Honeywell Aerospace
-
AAS33001LLEATR-5
Allegro MicroSystems
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
