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Allegro MicroSystems ASEK1363LKT-01-T-DK

Name: ASEK1363LKT-01-T-DK
Brand: Allegro MicroSystems
SKU: ASEK1363LKT-01-T-DK
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ASEK1363LKT-01-T-DK

Manufacturer:: Allegro MicroSystems

Category:: Sensor Evaluation Boards

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Datasheet:: ASEK1363LKT-01-T-DK.pdf

Description:: BOARD DEMO A1363LKT-01 SENSOR

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Product details

Overview

The ASEK1363LKT-01-T-DK from Allegro MicroSystems is a programmable linear Hall-effect current sensor IC designed for high-accuracy, high-bandwidth current sensing in automotive power electronics. It delivers 120 kHz analog bandwidth, ±0.25% linearity error, factory-programmed temperature-compensated sensitivity (0.6–1.3 mV/G), and operates across –40°C to 150°C - enabling precise closed-loop control in HEV inverter phase-leg monitoring.

For engineers reviewing the ASEK1363LKT-01-T-DK datasheet, ASEK1363LKT-01-T-DK pinout, ASEK1363LKT-01-T-DK application, or ASEK1363LKT-01-T-DK equivalent, key selection criteria include ratiometric output stability over supply voltage variation, user-adjustable quiescent voltage (2.3–2.7 V at 5 V_CC), broken-ground-wire detection, and AEC-Q100 qualification for automotive safety-critical systems.

Technical Context

This device implements proprietary segmented linear interpolated digital temperature compensation stored in on-chip EEPROM, achieving <±0.5% total sensitivity drift (ΔSens_TC) from –40°C to 150°C without sacrificing analog signal path integrity. Its BiCMOS interface integrates a low-noise amplifier, chopper stabilization (500 kHz), and dynamic offset cancellation to maintain 1.1 mG_RMS/√Hz noise floor at full bandwidth.

The sensor uses a single-axis Hall element with magnetic flux direction perpendicular to the branded package face; output is ratiometric to V_CC, with programmable clamps (0.15–0.45 V low / 4.55–4.85 V high) and open-circuit ground detection. Programming occurs via Manchester-encoded serial interface on V_CC and V_OUT pins using coarse (2-bit) and fine (9-bit) sensitivity bits plus 9-bit quiescent voltage trim.

Key Specifications

Parameter	Value and Actual Design Meaning
Bandwidth	120 kHz – Enables real-time current feedback for 20 kHz PWM inverters without phase lag
Sensitivity Range	0.6–1.3 mV/G (SENS_COARSE = 00) – Optimized for low-field current sensing with minimal gain error
Temperature Drift (ΔSens_TC)	±2.5% (–40°C to 150°C) – Factory-compensated via digital interpolation for stable gain across thermal cycling
Quiescent Output Range	2.3–2.7 V at V_CC = 5 V – User-programmable to match ADC reference and minimize headroom loss
Noise Density	1.1 mG_RMS/√Hz – Supports sub-ampere resolution in high-precision motor phase current measurement
Operating Temp	–40°C to 150°C – Validated for under-hood EPS and inverter applications per AEC-Q100 Grade 0
Supply Voltage	4.5–5.5 V – Ratiometric operation ensures immunity to 10% rail variation in automotive 5 V domains

Pinout & Package

ASEK1363LKT-01-T-DK is housed in a 4-pin Single In-line Package (SIP), 1 mm case thickness, Pb-free with 100% matte tin leadframe plating. The package features an ejector pin mark on the opposite side of the branded face and is optimized for ring-concentrator mounting in current-sensing PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
1: V_CC	Power input & programming channel	Supplies 4.5–5.5 V; also carries Manchester-encoded programming data during configuration
2: V_OUT	Analog output & programming channel	Delivers ratiometric voltage proportional to magnetic field; dual-use for serial programming communication
3: NC	No-connect terminal	Must be connected to GND for optimal ESD performance (±9 kV HBM); no internal connection
4: GND	Reference ground & fault detection node	Provides return path; enables broken-wire detection by monitoring open-circuit voltage at this pin

Key Features

Feature	Design Value
Factory digital temperature compensation	EEPROM-stored TC coefficients eliminate analog compensation circuitry, preserving 120 kHz bandwidth
User-programmable quiescent voltage	9-bit trim allows 2.3–2.7 V setting at 5 V_CC, matching 12-bit ADC mid-scale for maximum dynamic range
Broken ground wire detection	Monitors GND pin impedance to flag open-circuit faults before system failure in EPS or inverter control loops
Selective output clamping	Programmable high/low voltage clamps (0.15–0.45 V / 4.55–4.85 V) enable short-circuit diagnostics without external components
AEC-Q100 Grade 0 qualification	Validated for 150°C junction operation with lifetime drift ≤±1% sensitivity shift post-qualification stress

Applications

Hybrid Electric Vehicle (HEV) Inverter Phase Legs	Electric Power Steering (EPS) Motor Current Sensing
Use Scenario: Real-time phase current measurement in IGBT/SiC half-bridge legs for torque vectoring and overcurrent protection. IC Role / Device Role / Timing Role: High-bandwidth analog current sensor providing 120 kHz feedback to MCU-based PWM controllers. Use Value: Enables <1 µs overcurrent response time and <±0.5% current loop gain stability across –40°C to 150°C ambient.	Use Scenario: Bidirectional motor current monitoring in column-assist EPS systems requiring fail-safe torque control. IC Role / Device Role / Timing Role: Ratiometric Hall sensor interfacing directly to 12-bit SAR ADC with programmable zero-point alignment. Use Value: Delivers <±0.25% linearity and broken-ground detection to meet ISO 26262 ASIL-B diagnostic coverage requirements.
DC-DC Converter Primary-Side Current Monitoring	Onboard Charger (OBC) Isolated Current Feedback
Use Scenario: High-side current sensing in 400 V–800 V bidirectional DC-DC converters for battery management systems. IC Role / Device Role / Timing Role: Linear Hall sensor mounted on copper busbar with ring concentrator for galvanic isolation. Use Value: Provides 120 kHz bandwidth and <1.1 mG_RMS/√Hz noise to support 100+ kHz switching frequencies without aliasing.	Use Scenario: Secondary-side current feedback in transformer-isolated OBC topologies where compact SIP footprint minimizes creepage distance. IC Role / Device Role / Timing Role: Low-profile 4-pin SIP sensor placed adjacent to secondary winding for accurate charge/discharge current reporting. Use Value: 1 mm case thickness and AEC-Q100 qualification ensure reliability in thermally constrained OBC enclosures.

Hybrid Electric Vehicle (HEV) Inverter Phase Legs

Electric Power Steering (EPS) Motor Current Sensing

Use Scenario: Real-time phase current measurement in IGBT/SiC half-bridge legs for torque vectoring and overcurrent protection.

IC Role / Device Role / Timing Role: High-bandwidth analog current sensor providing 120 kHz feedback to MCU-based PWM controllers.

Use Value: Enables <1 µs overcurrent response time and <±0.5% current loop gain stability across –40°C to 150°C ambient.

Use Scenario: Bidirectional motor current monitoring in column-assist EPS systems requiring fail-safe torque control.

IC Role / Device Role / Timing Role: Ratiometric Hall sensor interfacing directly to 12-bit SAR ADC with programmable zero-point alignment.

Use Value: Delivers <±0.25% linearity and broken-ground detection to meet ISO 26262 ASIL-B diagnostic coverage requirements.

DC-DC Converter Primary-Side Current Monitoring

Onboard Charger (OBC) Isolated Current Feedback

Use Scenario: High-side current sensing in 400 V–800 V bidirectional DC-DC converters for battery management systems.

IC Role / Device Role / Timing Role: Linear Hall sensor mounted on copper busbar with ring concentrator for galvanic isolation.

Use Value: Provides 120 kHz bandwidth and <1.1 mG_RMS/√Hz noise to support 100+ kHz switching frequencies without aliasing.

Use Scenario: Secondary-side current feedback in transformer-isolated OBC topologies where compact SIP footprint minimizes creepage distance.

IC Role / Device Role / Timing Role: Low-profile 4-pin SIP sensor placed adjacent to secondary winding for accurate charge/discharge current reporting.

Use Value: 1 mm case thickness and AEC-Q100 qualification ensure reliability in thermally constrained OBC enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable linear Hall-effect current sensor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ACS724LLCTR-10AU-T	Integrated current conductor; fixed 10 A range; no user programming; 80 kHz bandwidth	Lacks sensitivity/quiescent voltage trim and EEPROM temperature compensation	Choose when board space permits integrated conductor and factory-calibrated gain suffices
TLE4971-2500S4HALA	16-bit digital SPI output; 2500 A/s slew rate; ±0.5% total error; no analog output	Requires MCU SPI interface; no ratiometric analog compatibility with legacy ADC designs	Prefer when digital interface, higher resolution, and built-in CRC diagnostics are required

Compared with ACS724LLCTR-10AU-T and TLE4971-2500S4HALA, ASEK1363LKT-01-T-DK uniquely combines user-programmable analog output, factory-digital temperature compensation, and AEC-Q100 Grade 0 operation in a 4-pin SIP - making it the only option supporting both legacy analog control loops and production-level automotive thermal robustness without external calibration.

Availability

ASEK1363LKT-01-T-DK is available at Aetrix Electronics and suitable for hybrid electric vehicle inverter monitoring, electric power steering motor control, and high-voltage DC-DC converter current sensing requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.

Supply support for ASEK1363LKT-01-T-DK 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 magnetic sensing and power ICs for automotive and industrial motion control.

The A1363 product line was engineered specifically for high-fidelity current sensing in automotive electrification systems - emphasizing thermal stability, programmability, and functional safety compliance without analog compensation overhead.

FAQ

What is the factory-programmed sensitivity range for ASEK1363LKT-01-T-DK?

The ASEK1363LKT-01-T-DK is factory-programmed with SENS_COARSE = 00, yielding a sensitivity range of 0.6–1.3 mV/G. This coarse setting determines the baseline gain window; fine trimming (9-bit) adjusts within that range. Changing coarse bits post-factory voids the temperature compensation guarantee, as ΔSens_TC may exceed ±2.5%.

How does ASEK1363LKT-01-T-DK achieve 120 kHz bandwidth while maintaining low noise?

ASEK1363LKT-01-T-DK achieves 120 kHz bandwidth through proprietary chopper stabilization at 500 kHz and a high-gain low-noise BiCMOS amplifier - all implemented without digital filtering that would degrade analog fidelity. Its 1.1 mG_RMS/√Hz noise density is preserved across the full bandwidth due to dynamic offset cancellation and optimized Hall element design.

Can ASEK1363LKT-01-T-DK be programmed in-system after soldering?

Yes, ASEK1363LKT-01-T-DK supports in-system programming via its V_CC and V_OUT pins using Manchester-encoded serial protocol. No dedicated programming header is needed. Programming adjusts quiescent voltage (9-bit) and sensitivity (9-bit fine + 2-bit coarse), with EEPROM lock bit (EELOCK) preventing accidental rewrites after final configuration.

What fault detection features are integrated into ASEK1363LKT-01-T-DK?

ASEK1363LKT-01-T-DK integrates three hardware fault monitors: (1) broken ground wire detection via GND pin impedance sensing, (2) undervoltage lockout (UVLO) with 3.5 V/4 V thresholds, and (3) output voltage clamps (0.15–0.45 V low / 4.55–4.85 V high) that provide short-circuit diagnostics. All operate autonomously without MCU intervention.

Is ASEK1363LKT-01-T-DK qualified for automotive safety applications?

Yes, ASEK1363LKT-01-T-DK is AEC-Q100 Grade 0 qualified (operating to 150°C ambient), with validated lifetime sensitivity drift ≤±1% post-stress and functional safety features including ratiometric output, open-ground detection, and EEPROM ECC error correction - supporting ASIL-B system-level compliance in EPS and inverter designs.

ASEK1363LKT-01-T-DK Specifications

Product attributes: Attribute value

Manufacturer:: Allegro MicroSystems

Series:: -

Packaging:: Box

Product Status:: Discontinued at Digi-Key

Sensor Type:: Current Sensor

Sensing Range:: -

Interface:: -

Sensitivity:: -

Voltage - Supply:: 4.5V ~ 5.5V

Embedded:: -

Contents:: Board(s)

Utilized IC / Part:: A1363

ASEK1363LKT-01-T-DK FAQ

1.How can I place an order for ASEK1363LKT-01-T-DK through Aetrix?

Please submit a Request for Quotation (RFQ) for ASEK1363LKT-01-T-DK 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 ASEK1363LKT-01-T-DK reliable?

The price and inventory of ASEK1363LKT-01-T-DK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASEK1363LKT-01-T-DK is usually 5 days.

3.What payment methods are accepted for ASEK1363LKT-01-T-DK?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASEK1363LKT-01-T-DK transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ASEK1363LKT-01-T-DK?

ASEK1363LKT-01-T-DK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ASEK1363LKT-01-T-DK 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 ASEK1363LKT-01-T-DK?

For technical support, including ASEK1363LKT-01-T-DK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASEK1363LKT-01-T-DK requirements.

6.How does Aetrix verify that ASEK1363LKT-01-T-DK is sourced from the original manufacturer or authorized distributors?

All ASEK1363LKT-01-T-DK 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 ASEK1363LKT-01-T-DK meets industry standards.

7.What is the process for return or replacement of ASEK1363LKT-01-T-DK?

All ASEK1363LKT-01-T-DK units undergo pre-shipment inspection (PSI). If there is an issue with ASEK1363LKT-01-T-DK, 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 ASEK1363LKT-01-T-DK part is unused and in its original packaging.

Return procedure for ASEK1363LKT-01-T-DK:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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