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Allegro MicroSystems A1330LLETR-T-C02
- Part No.:
- A1330LLETR-T-C02
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
A1330LLETR-T-C02.pdf
- Description:
- PROGRAMMABLE ANGLE SENSOR IC WIT
- Quantity:
- Payment:
- Shipping:
Inventory:4,276
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Product details
Overview
A1330LLETR-T-C02 from Allegro MicroSystems is a programmable 360° contactless angle sensor IC based on Circular Vertical Hall (CVH) technology, delivering high-resolution angular position data via analog output. It features EEPROM-programmable angle scaling, adjustable averaging (ANG_AVE = 3), enhanced analog hysteresis, and operates from 4.5–5.5 V over –40°C to +150°C. Designed for automotive throttle, steering, and EPS systems requiring robust diagnostics and AEC-Q100 compliance.
For engineers reviewing the A1330LLETR-T-C02 datasheet, A1330LLETR-T-C02 pinout, A1330LLETR-T-C02 application, or A1330LLETR-T-C02 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts with functional trade-offs for safety-critical rotational sensing.
Technical Context
The A1330LLETR-T-C02 implements a system-on-chip architecture with a CVH front end, 12-bit angle resolution ADC, digital signal processing, and analog backend with programmable clamps and hysteresis. Its EEPROM supports up to 100 read/write cycles for end-of-line calibration of zero-angle reference, rotation direction, clamp thresholds, and short-stroke gain.
It delivers configurable angle refresh rates from 25 µs (no averaging) to 3200 µs (128-sample averaging), with the C02 variant specifically configured for increased internal averaging and higher analog hysteresis to reduce angle noise in low-RPM applications. Built-in diagnostics include broken-ground-wire detection, missing-magnet flag, undervoltage/overvoltage lockout, and open-circuit monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Angle Resolution | 12-bit internal resolution (4096 codes), enabling ±0.4° typical angle error at 25°C with ideal magnet alignment. |
| Output Type | Analog voltage output (0.25–4.75 V at VCC = 5 V), ratiometric to supply, with EEPROM-programmable high/low clamps for diagnostic fault signaling. |
| Refresh Rate | Configurable from 25 µs to 3200 µs; A1330LLETR-T-C02 uses ANG_AVE = 3 → 200 µs response time with improved noise immunity. |
| Operating Temp | –40°C to +150°C ambient, qualified per AEC-Q100 Grade 0, supporting under-hood automotive deployment. |
| Supply Voltage | 4.5–5.5 V nominal; includes undervoltage lockout (VUVLO(H) = 4.65 V) and overvoltage protection (VOVLO(H) = 6.3 V). |
| Magnetic Range | Supports input fields up to 1200 G; optimized for 300 G operation with <±0.5° max angle drift from 25°C to 150°C. |
| EEPROM Endurance | 100 write/erase cycles for field-programmable calibration parameters including zero-angle offset, direction (CW/CCW), and short-stroke scaling. |
Pinout & Package
Package: 8-pin TSSOP (LE package), lead-free with 100% matte-tin leadframe plating. Single-die configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Power supply input & Manchester communication line | Supplies 4.5–5.5 V; also carries serial programming commands via Manchester encoding during calibration. |
| VOUT (Pin 2) | Analog angle output & EEPROM programming pulse input | Delivers ratiometric 0.25–4.75 V output; accepts high-voltage (18–19.5 V) pulses for EEPROM write activation. |
| GND (Pin 4) | Reference ground & broken-wire detection node | Internal circuit reference; open-circuit detection triggers diagnostic flag if disconnected. |
| NC (Pins 3,5,6,7,8) | No-connect terminals | Must be tied to GND for optimal ESD performance; no internal connection. |
Key Features
| Feature | Design Value |
|---|---|
| Circular Vertical Hall (CVH) Sensing | Single-channel magnetic sensing with air-gap independence-enables consistent accuracy across mechanical tolerances without dual-Hall alignment. |
| Programmable Short Stroke Mode | Configurable gain and min/max angle thresholds allow full-scale analog output for sub-360° mechanical rotations (e.g., 0–90° throttle), improving effective resolution. |
| EEPROM-Based Diagnostics | User-defined clamp levels (5–95% VCC) and hysteresis (0–1.406°) convert output voltage excursions into actionable fault signals for host MCU. |
| Built-in Safety Monitoring | Detects broken ground wire, missing magnet (low-field flag), undervoltage, overvoltage, and EEPROM lock status-reducing need for external watchdog circuits. |
| AEC-Q100 Qualified | Grade 0 qualification (–40°C to +150°C) with <±0.5° lifetime angle drift post-stress, meeting ASIL-B functional safety prerequisites for steering/throttle sensors. |
Applications
| Automotive Throttle Position Sensing | Electric Power Steering (EPS) Angle Feedback |
|---|---|
|
Use Scenario: Measures butterfly valve rotation in gasoline/diesel engine intake manifolds under vibration, temperature cycling, and EMI. IC Role / Device Role / Timing Role: Primary contactless angular transducer providing real-time 0–100% throttle opening feedback to ECU with <200 µs latency. Use Value: A1330LLETR-T-C02's enhanced hysteresis and averaging suppress noise-induced false zero-crossings during idle, improving closed-loop fuel control stability. |
Use Scenario: Monitors rack-and-pinion or column-assist motor shaft angle for torque overlay and assist ratio calculation in 12 V EPS systems. IC Role / Device Role / Timing Role: Redundant or primary angle sensor feeding absolute position to EPS controller with diagnostic-ready analog output. Use Value: Broken-ground detection and missing-magnet flag enable immediate fail-safe shutdown before loss of steering assist-critical for ISO 26262 ASIL-B compliance. |
| Industrial Valve Actuator Feedback | Robot Joint Position Sensing |
|
Use Scenario: Provides absolute angular feedback for pneumatic/hydraulic linear-to-rotary actuators in oil/gas pipeline control valves exposed to wide temperature swings. IC Role / Device Role / Timing Role: High-reliability non-contact position sensor interfacing directly to PLC analog inputs with ratiometric scaling. Use Value: EEPROM-programmable zero-angle reference allows field calibration after mechanical installation, eliminating manual potentiometer trimming. |
Use Scenario: Mounted on servo motor output shafts in collaborative robots to track joint articulation within ±180° range with sub-degree repeatability. IC Role / Device Role / Timing Role: Compact, high-precision angle transducer enabling closed-loop motion control with integrated diagnostics for predictive maintenance. Use Value: Short-stroke mode configures full 0–5 V output for ±90° joint travel, maximizing ADC utilization and reducing quantization error vs. standard 360° mapping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar angle sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS5055A-DSOQ | 12-bit SPI-output magnetic encoder; no analog/PWM output; requires external ADC or microcontroller interface. | Lacks integrated analog driver and EEPROM-based diagnostics; needs additional components for clamp-level fault signaling. | Choose when digital interface, smaller footprint (SOIC-8), or lower power (5 mA typ.) outweigh need for self-contained analog output. |
| TLE5012BE1000 | 16-bit angle sensor with BISS-C/SENT output; includes on-chip temperature compensation and dynamic angle error correction. | Higher resolution but no native analog output; requires signal conditioning or DAC for legacy analog ECU interfaces. | Prefer when >12-bit precision, SENT compatibility, or advanced on-chip error compensation are required-accept added system complexity. |
Compared with AS5055A-DSOQ and TLE5012BE1000, the A1330LLETR-T-C02 uniquely combines factory-configured analog output, EEPROM-programmable diagnostics, and AEC-Q100 Grade 0 qualification in a single TSSOP-8 package-enabling drop-in replacement in existing analog-sensing designs without firmware or layout changes.
Availability
A1330LLETR-T-C02 is available at Aetrix Electronics and suitable for automotive throttle control, electric power steering systems, industrial valve actuation, and robotic joint positioning requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for A1330LLETR-T-C02 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 automotive subsystems-including throttle, steering, and transmission-where reliability, diagnostic capability, and AEC-Q100 compliance are mandatory.
FAQ
What distinguishes A1330LLETR-T-C02 from the base A1330LLETR-T?
The A1330LLETR-T-C02 is a factory-programmed variant of the A1330LLETR-T with increased internal angle averaging (ANG_AVE = 3) and higher analog hysteresis settings. This configuration reduces angle noise in low-speed applications like throttle sensing without requiring user EEPROM reprogramming. All other electrical, thermal, and pinout specifications remain identical to the base A1330LLETR-T part.
Does A1330LLETR-T-C02 support both analog and PWM output modes?
No. The A1330LLETR-T-C02 is factory-configured exclusively for analog output, as indicated by the "T" suffix in its part number. PWM output is only available on variants with "P" in the suffix (e.g., A1330LLETR-P-T). The analog output provides a ratiometric voltage (0.25–4.75 V at 5 V supply) proportional to measured angle, with EEPROM-programmable clamp levels for diagnostics.
Can A1330LLETR-T-C02 be used in redundant sensing architectures?
Yes. The A1330LLETR-T-C02 supports dual-die configurations (e.g., A1330LLETR-DD-T), but the C02 variant itself is single-die. For redundancy, designers may use two A1330LLETR-T-C02 units with independent magnets and signal paths. Its built-in diagnostics-including broken-ground detection, missing-magnet flag, and EEPROM-locked calibration-enable cross-checking between channels per ISO 26262 requirements.
What is the maximum recommended PCB trace length for VOUT routing in A1330LLETR-T-C02?
For optimal noise immunity and stability, Allegro recommends limiting VOUT trace length to ≤5 cm with 4.7 kΩ pull-up/pull-down resistors to VCC or GND, and keeping output capacitance ≤10 nF. Longer traces increase susceptibility to EMI and may degrade the 12-bit effective resolution-especially critical in high-vibration automotive environments where the A1330LLETR-T-C02 is commonly deployed.
How does the EEPROM programming interface of A1330LLETR-T-C02 work without dedicated serial pins?
The A1330LLETR-T-C02 uses a single-wire Manchester-encoded serial interface: VCC serves as the bidirectional data line for commands, and VOUT acts as the response/output line. Programming pulses (18–19.5 V) are applied to VOUT to activate EEPROM cells. This eliminates need for extra pins while maintaining secure, low-pin-count calibration-fully documented in the A1330 datasheet Rev. 4 under "Programming Serial Interface."
A1330LLETR-T-C02 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:
- Analog Voltage
- 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:
- SMD (SMT) Tab
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-eTSSOP
A1330LLETR-T-C02 FAQ
1.How can I place an order for A1330LLETR-T-C02 through Aetrix?
Please submit a Request for Quotation (RFQ) for A1330LLETR-T-C02 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-T-C02 reliable?
The price and inventory of A1330LLETR-T-C02 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A1330LLETR-T-C02 is usually 5 days.
3.What payment methods are accepted for A1330LLETR-T-C02?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A1330LLETR-T-C02 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A1330LLETR-T-C02?
A1330LLETR-T-C02 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A1330LLETR-T-C02 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-T-C02?
For technical support, including A1330LLETR-T-C02 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A1330LLETR-T-C02 requirements.
6.How does Aetrix verify that A1330LLETR-T-C02 is sourced from the original manufacturer or authorized distributors?
All A1330LLETR-T-C02 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-T-C02 meets industry standards.
7.What is the process for return or replacement of A1330LLETR-T-C02?
All A1330LLETR-T-C02 units undergo pre-shipment inspection (PSI). If there is an issue with A1330LLETR-T-C02, 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-T-C02 part is unused and in its original packaging.
Return procedure for A1330LLETR-T-C02:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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