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Allegro MicroSystems A1330LLETR-P-T
- Part No.:
- A1330LLETR-P-T
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
A1330LLETR-P-T.pdf
- Description:
- PROGRAMMABLE ANGLE SENSOR IC WIT
- Quantity:
- Payment:
- Shipping:
Inventory:2,164
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Product details
Overview
A1330LLETR-P-T from Allegro MicroSystems is a programmable 360° contactless angle sensor IC with PWM output, Circular Vertical Hall (CVH) sensing architecture, 12-bit angular resolution, 25 µs minimum angle refresh rate, and AEC-Q100 automotive qualification. It delivers precise rotational position, speed, and direction data in high-reliability motor control and steering applications.
For engineers reviewing the A1330LLETR-P-T datasheet, A1330LLETR-P-T pinout, A1330LLETR-P-T application, or A1330LLETR-P-T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific use cases, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The A1330LLETR-P-T implements a single-die system-on-chip (SoC) with CVH front end, digital signal processing, EEPROM-based calibration storage (100 write cycles), and programmable PWM backend. Its angle measurement path supports configurable averaging (1–128 samples) and fine scaling for short-stroke motion.
It features broken-ground-wire detection, user-programmable output clamps (5–95% VCC), undervoltage/overvoltage lockout (4.65 V rising / 3.9 V falling UVLO), and Manchester serial interface via VCC/VOUT pins for EEPROM programming. PWM carrier frequency is adjustable from 156.25 Hz to 20 kHz via 3-bit EEPROM field.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | PWM open-drain; duty cycle linearly proportional to 0°–360° angle, default 5–95% range |
| Angle Resolution | 12-bit internal resolution; enables ±0.4° typical angle error at 25°C with ideal magnet alignment |
| Refresh Rate | Configurable 25–3200 µs via ANG_AVE EEPROM register; 25 µs at zero averaging for high-RPM response |
| Supply Voltage | 4.5–5.5 V; includes undervoltage lockout (VUVLO(H) = 4.65 V) and overvoltage protection (VOVLO(H) = 6.3 V) |
| Operating Temp | –40°C to +150°C ambient; qualified per AEC-Q100 Grade 0; angle drift ≤ ±1.8° over full range |
| Package | 8-pin TSSOP (LE package); lead-free, 100% matte-tin leadframe; RθJA = 145°C/W |
| Current Draw | 8.5–10 mA typical (PWM mode, unloaded); lower than analog-output variants for power-sensitive systems |
Pinout & Package
8-pin TSSOP (LE package), lead-free, 100% matte-tin leadframe plating. Pin 1 = VCC, Pin 2 = VOUT (PWM output), Pins 3/5/6/7/8 = NC (must be tied to GND for ESD performance), Pin 4 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Power supply input & Manchester serial input | Supplies 4.5–5.5 V; also carries Manchester-encoded commands during programming |
| VOUT (Pin 2) | PWM output & Manchester serial output | Open-drain PWM signal; also transmits Manchester-encoded Read Acknowledge frames |
| GND (Pin 4) | Reference ground & broken-wire detection node | Internal circuit reference; enables open-circuit detection on ground connection failure |
| NC (Pins 3,5,6,7,8) | No-connect terminals | Must be externally tied to GND to ensure optimal ESD immunity and noise margin |
Key Features
| Feature | Design Value |
|---|---|
| Programmable PWM carrier frequency | 8 selectable frequencies (156.25 Hz – 20 kHz) via EEPROM; allows noise vs. response trade-off |
| EEPROM-based angle calibration | 100-cycle non-volatile memory stores zero-angle offset, rotation direction (CW/CCW), and gain |
| Diagnostic output clamps | User-configurable HIGH_CLAMP/LOW_CLAMP (5–95% VCC); enables short-circuit/open-load fault detection |
| Built-in broken-ground detection | Monitors GND pin continuity; asserts diagnostic flag if ground path opens-critical for safety-critical systems |
| Short-stroke angle scaling | Programmable GAIN setting maps sub-360° mechanical rotation to full 0–360° output scale |
Applications
| Electric Power Steering (EPS) | Automotive Throttle Control |
|---|---|
Use Scenario: Real-time measurement of steering column rotation angle for assist torque calculation and redundancy monitoring. IC Role / Device Role / Timing Role: Primary angle sensor providing 360° absolute position with <25 µs latency and AEC-Q100-compliant reliability. Use Value: Enables fail-operational EPS architecture via diagnostic clamps, broken-ground detection, and EEPROM-trimmed zero-angle stability across temperature. |
Use Scenario: Monitoring throttle plate angular position in gasoline/diesel engines under high-vibration, wide-temperature conditions. IC Role / Device Role / Timing Role: Contactless angular transducer delivering PWM output compatible with standard microcontroller capture peripherals. Use Value: Eliminates potentiometer wear-out; programmable clamps detect stuck-throttle conditions; short-stroke mode optimizes resolution for 0–90° mechanical travel. |
| Industrial Motor Feedback | Robot Joint Position Sensing |
Use Scenario: Closed-loop commutation feedback for BLDC motors in factory automation drives requiring high-speed, high-accuracy rotor position. IC Role / Device Role / Timing Role: High-bandwidth angle sensor with 25 µs refresh supporting >7,000 RPM operation and real-time current vector control. Use Value: Reduces phase lag vs. resolvers; eliminates analog-to-digital conversion latency; internal averaging suppresses vibration-induced noise without sacrificing bandwidth. |
Use Scenario: Compact joint angle measurement in collaborative robots where space-constrained PCB layout demands small TSSOP footprint and minimal external components. IC Role / Device Role / Timing Role: Single-die SoC angle sensor with integrated EEPROM trimming-enables factory calibration and field re-zeroing without external DAC or MCU intervention. Use Value: Low 10 mA supply current extends battery life; PWM output simplifies isolation; missing-magnet flag prevents false motion detection during maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar angle sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS5055A-DSO | 12-bit SPI output only; no PWM; requires external microcontroller for protocol handling; no EEPROM trimming | Lacks built-in diagnostics (no broken-ground detection, no output clamps); not AEC-Q100 qualified | Select when SPI interface and external calibration are acceptable; avoid in safety-critical automotive systems |
| TLE5012B E1000 | 14-bit resolution; dual-output (PWM + SENT); integrated SENT transmitter; higher supply current (13 mA) | Includes SENT interface for direct ECU integration; supports higher magnetic field tolerance (±1500 G) | Prefer when dual-output redundancy or SENT compliance is required; higher cost and power vs. A1330LLETR-P-T |
Compared with AS5055A-DSO and TLE5012B E1000, the A1330LLETR-P-T offers the lowest system-level BOM count for PWM-only automotive applications due to its integrated EEPROM calibration, diagnostic features, and AEC-Q100 qualification-without requiring external fault-handling logic or secondary communication interfaces.
Availability
A1330LLETR-P-T is available at Aetrix Electronics and suitable for electric power steering, throttle control, and industrial motor feedback applications requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for A1330LLETR-P-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 designer and manufacturer of high-performance Hall-effect sensors, motor drivers, and power ICs, serving automotive, industrial, and consumer markets since 1989.
The A1330 product line delivers programmable contactless angle sensing for safety-critical motion control, emphasizing diagnostic integrity, EEPROM-based end-of-line calibration, and robust operation across –40°C to +150°C.
FAQ
What output interface does the A1330LLETR-P-T provide?
The A1330LLETR-P-T provides a pulse-width-modulated (PWM) open-drain output, where duty cycle is linearly proportional to measured angle (0° = 5%, 360° = 95%). It does not support analog voltage output-this function is exclusive to the A1330LLETR-T variant. The PWM carrier frequency is programmable from 156.25 Hz to 20 kHz via EEPROM configuration.
Is the A1330LLETR-P-T AEC-Q100 qualified?
Yes, the A1330LLETR-P-T is fully AEC-Q100 Grade 0 qualified (–40°C to +150°C ambient), with test evidence including HTOL, TC, UHAST, and ESD validation. This qualification covers the entire device-including EEPROM programming, PWM timing accuracy, and diagnostic features like broken-ground detection-making it suitable for automotive safety-related systems.
How is the A1330LLETR-P-T calibrated and programmed?
The A1330LLETR-P-T uses an on-chip EEPROM (100 write cycles) to store calibration parameters including zero-angle offset, rotation direction (CW/CCW), gain, clamp levels, and hysteresis settings. Programming occurs via Manchester-encoded pulses on the VCC (input) and VOUT (output) pins using a dedicated controller-no external programmer hardware is needed beyond a GPIO-capable MCU.
Does the A1330LLETR-P-T support diagnostic features?
Yes, the A1330LLETR-P-T integrates multiple hardware diagnostics: broken-ground-wire detection on the GND pin, programmable output clamps (5–95% VCC) for short-circuit/open-load detection, missing-magnet error flag, undervoltage/overvoltage lockout with hysteresis, and EEPROM CRC-protected configuration. These are active during normal operation and require no host MCU polling.
What is the thermal performance of the A1330LLETR-P-T in its TSSOP package?
The A1330LLETR-P-T in the 8-pin TSSOP (LE) package has a junction-to-ambient thermal resistance (RθJA) of 145°C/W for the single-die configuration. At maximum 10 mA supply current and 5.5 V VCC, power dissipation remains below 55 mW-ensuring junction temperature stays within safe limits (<125°C) even at 150°C ambient with modest PCB copper area.
A1330LLETR-P-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- 4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-TSSOP
A1330LLETR-P-T FAQ
1.How can I place an order for A1330LLETR-P-T through Aetrix?
Please submit a Request for Quotation (RFQ) for A1330LLETR-P-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 A1330LLETR-P-T reliable?
The price and inventory of A1330LLETR-P-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A1330LLETR-P-T is usually 5 days.
3.What payment methods are accepted for A1330LLETR-P-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A1330LLETR-P-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A1330LLETR-P-T?
A1330LLETR-P-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A1330LLETR-P-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 A1330LLETR-P-T?
For technical support, including A1330LLETR-P-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A1330LLETR-P-T requirements.
6.How does Aetrix verify that A1330LLETR-P-T is sourced from the original manufacturer or authorized distributors?
All A1330LLETR-P-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 A1330LLETR-P-T meets industry standards.
7.What is the process for return or replacement of A1330LLETR-P-T?
All A1330LLETR-P-T units undergo pre-shipment inspection (PSI). If there is an issue with A1330LLETR-P-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 A1330LLETR-P-T part is unused and in its original packaging.
Return procedure for A1330LLETR-P-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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