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Allegro MicroSystems A1362LKTTN-T
- Part No.:
- A1362LKTTN-T
- Manufacturer:
- Allegro MicroSystems
- Category:
- Linear, Compass (ICs)
- Package:
- 4-SIP Module
- Datasheet:
-
A1362LKTTN-T.pdf
- Description:
- SENSOR HALL EFFECT ANALOG 4SIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,494
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Product details
Overview
A1362LKTTN-T from Allegro MicroSystems is a discontinued, programmable linear Hall effect sensor IC designed for high-accuracy current sensing and magnetic field measurement in automotive and industrial systems. It delivers ratiometric analog output, user-adjustable quiescent voltage (10% or 50% of VCC), sensitivity range of 4.5–16 mV/G, bandwidth up to 50 kHz via external FILTER capacitor, and operates across –40°C to 150°C.
For engineers reviewing the A1362LKTTN-T datasheet, A1362LKTTN-T pinout, A1362LKTTN-T application, or A1362LKTTN-T equivalent, this page provides verified technical context, confirmed pin functions, real-world application mappings, and validated alternative options for legacy design support and transition planning.
Technical Context
The A1362LKTTN-T integrates a BiCMOS monolithic circuit with a Hall element, dynamic offset cancellation (chopper-stabilized at 210 kHz), temperature-compensation circuitry, and a clamped low-impedance output stage. Its architecture enables precise ratiometric output scaling with supply voltage and supports end-of-line programming via voltage pulses on the VOUT pin.
It features factory-programmed 0%/°C sensitivity temperature coefficient, selectable unidirectional/bidirectional operation, and bandwidth tuning through an external capacitor on the FILTER pin - enabling configurable response from <1 kHz up to 50 kHz while maintaining low noise (8–38 mVp-p) depending on filter capacitance and sensitivity setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensitivity Range | 4.5 to 16 mV/G - enables high-resolution detection of weak magnetic fields in current-sensing shunts or proximity applications. |
| Operating Temperature | –40°C to 150°C - qualified for under-hood automotive and industrial motor control environments without derating. |
| Supply Voltage | 4.5 V to 5.5 V - ratiometric operation ensures stable output scaling with VCC variations in noisy power domains. |
| Bandwidth | Up to 50 kHz - adjustable via external capacitor on FILTER pin; supports fast transient current monitoring in inverters and switch-mode power supplies. |
| Output Clamps | VCLP(HIGH) = 4.65–4.91 V, VCLP(LOW) = 0.25–0.4 V - provide short-circuit diagnostics and rail-to-rail interface compatibility with 5 V ADCs or microcontrollers. |
| Noise (p-p) | 8–38 mV - dependent on sensitivity and filter capacitance; lower values achieved at reduced bandwidth for precision DC/low-frequency measurements. |
| Quiescent Output | Programmable to 10% (unidirectional) or 50% (bidirectional) of VCC - allows flexible signal centering for single-supply amplification or differential measurement. |
Pinout & Package
Package: 4-pin SIP (Single In-line Package), suffix KT, 1 mm case thickness, lead-free with 100% matte tin plating - optimized for high magnetic coupling in PCB-mounted current sensors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VCC | Power supply input | 4.5–5.5 V nominal; requires 0.1 µF bypass capacitor to GND for stable internal regulation and noise immunity. |
| 2: VOUT | Analog output & programming interface | Delivers ratiometric voltage proportional to magnetic field; also accepts serial voltage pulses for offset/sensitivity programming. |
| 3: FILTER | Bandwidth control terminal | Connects external capacitor (1–1000 nF) to set small-signal –3 dB bandwidth from <1 kHz to 50 kHz. |
| 4: GND | Ground reference | Common return for VCC, VOUT, and FILTER; must be low-impedance path to minimize noise coupling into Hall element. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic offset cancellation | Chopper-stabilized at 210 kHz eliminates thermal and mechanical drift - ensures ±10 mV quiescent output drift over full temperature range. |
| Programmable sensitivity & offset | 8-bit resolution for both parameters - enables field calibration and compensation for system-level tolerances without hardware changes. |
| Ratiometric output behavior | Guaranteed <±1.5% ratiometry error for VOUT(Q), sensitivity, and clamp voltages - simplifies supply rail variation handling in 5 V systems. |
| Output voltage clamps | High-side clamp 4.65–4.91 V, low-side clamp 0.25–0.4 V - enables robust interfacing with 5 V ADCs and provides fault indication during short-circuit events. |
| Thin 1 mm SIP package | Maximizes magnetic coupling efficiency in current-sensing configurations - improves signal-to-noise ratio for low-current detection. |
Applications
| Automotive Current Monitoring | Industrial Motor Control |
|---|---|
|
Use Scenario: Measuring phase current in 48 V mild-hybrid traction inverters with isolated shunt placement. IC Role / Device Role / Timing Role: Linear Hall sensor providing analog feedback to MCU ADC; operates at 20 kHz switching frequency with 50 kHz bandwidth headroom. Use Value: 4.5–16 mV/G sensitivity range accommodates diverse shunt resistances; ratiometric output eliminates need for separate VREF calibration. |
Use Scenario: Closed-loop torque control in servo drives using embedded current sensing near motor windings. IC Role / Device Role / Timing Role: High-temperature Hall sensor mounted directly on PCB near power stage; outputs conditioned analog signal to isolation amplifier. Use Value: –40°C to 150°C rating enables direct mounting without heatsink; 1 mm SIP profile minimizes air gap for optimal flux capture. |
| Energy Metering | Overcurrent Protection |
|
Use Scenario: Bidirectional current sensing in Class 0.5 polyphase electricity meters for utility grid interconnection. IC Role / Device Role / Timing Role: Precision linear sensor delivering calibrated analog output to metrology ADC; configured for bidirectional 50% VCC quiescent point. Use Value: Factory-programmed 0%/°C TCSENS and <±2% linearity error ensure long-term accuracy compliance without periodic recalibration. |
Use Scenario: Fast-response overcurrent detection in UPS battery management systems with immediate shutdown logic. IC Role / Device Role / Timing Role: High-bandwidth sensor feeding comparator circuit; uses output clamps as fault indicators for digital logic inputs. Use Value: 50 kHz bandwidth and sub-μs propagation delay (<1.6 μs) enable detection of <100 μs fault transients; clamps eliminate external level-shifting components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear Hall effect sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A1361LKTTN-T | Sensitivity range 1.4–4.5 mV/G; lower gain, reduced noise floor at same bandwidth. | Better suited for medium-current ranges where higher sensitivity would saturate output. | Select when target magnetic field strength is 100–500 G and system SNR requirements favor lower intrinsic noise. |
| ACS724LLCTR-20AU-T | Integrated current sensor (20 A range), fixed 100 mV/A output, no programmability, SOIC-8 package. | Eliminates external shunt and layout complexity but lacks field-programmable offset/sensitivity. | Choose for new designs prioritizing ease of integration over calibration flexibility; not drop-in compatible due to different footprint and signal chain. |
Compared with A1362LKTTN-T, A1361LKTTN-T offers lower sensitivity and tighter noise performance for mid-range current sensing, while ACS724LLCTR-20AU-T trades programmability for integrated current measurement and simplified BOM - making it suitable only for fixed-range applications where field calibration is unnecessary.
Availability
A1362LKTTN-T is available at Aetrix Electronics and suitable for automotive current monitoring, industrial motor control, energy metering, and overcurrent protection requiring stable component supply despite end-of-life status.
Supply support for A1362LKTTN-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 of high-performance magnetic sensing and power ICs, specializing in Hall-effect technology for automotive and industrial markets since 1989.
The A136x family was developed to address high-accuracy, high-bandwidth linear Hall sensing needs in electric vehicle powertrains and industrial automation - emphasizing programmability, temperature stability, and robust packaging for harsh environments.
FAQ
Is A1362LKTTN-T still in production?
No, A1362LKTTN-T is a discontinued product. Allegro officially ended production as of June 1, 2016. It is not recommended for new designs, and samples are no longer available. Aetrix Electronics maintains limited legacy stock for existing program continuity and repair support.
What is the correct bypass capacitor value for A1362LKTTN-T?
The recommended bypass capacitor for A1362LKTTN-T is 0.1 µF placed between VCC and GND, as specified in the datasheet's operating characteristics section. This value ensures stable internal regulation and minimizes noise coupling into the Hall element and amplifier stages.
Can A1362LKTTN-T be programmed after soldering to the PCB?
Yes, A1362LKTTN-T supports end-of-line programming via voltage pulses applied to the VOUT pin. This allows post-assembly calibration of quiescent voltage and sensitivity without requiring dedicated programming hardware - provided the PCB provides access to VOUT, VCC, GND, and FILTER pins.
What is the maximum allowable filter capacitor on the FILTER pin of A1362LKTTN-T?
The FILTER pin of A1362LKTTN-T accepts external capacitors from 1 nF to 1000 nF. At 1000 nF, bandwidth drops below 1 kHz; at 1 nF, bandwidth reaches the maximum rated 50 kHz. The relationship is inverse and non-linear, as shown in the datasheet's bandwidth vs. capacitance graph.
Does A1362LKTTN-T support both unidirectional and bidirectional magnetic field sensing?
Yes, A1362LKTTN-T supports both configurations. It can be programmed for unidirectional operation (quiescent output at ~10% of VCC) or bidirectional operation (quiescent output at ~50% of VCC), enabling use in either current magnitude-only or direction-aware applications.
A1362LKTTN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 4-SIP Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Hall Effect
- Axis:
- Single
- Output Type:
- Analog Voltage
- Sensing Range:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Supply (Max):
- 12mA
- Current - Output (Max):
- 10mA
- Resolution:
- -
- Bandwidth:
- 50kHz
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Features:
- Programmable, Temperature Compensated
- Supplier Device Package:
- 4-SIP
- Mounting Type:
- Through Hole
A1362LKTTN-T FAQ
1.How can I place an order for A1362LKTTN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for A1362LKTTN-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 A1362LKTTN-T reliable?
The price and inventory of A1362LKTTN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A1362LKTTN-T is usually 5 days.
3.What payment methods are accepted for A1362LKTTN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A1362LKTTN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A1362LKTTN-T?
A1362LKTTN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A1362LKTTN-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 A1362LKTTN-T?
For technical support, including A1362LKTTN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A1362LKTTN-T requirements.
6.How does Aetrix verify that A1362LKTTN-T is sourced from the original manufacturer or authorized distributors?
All A1362LKTTN-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 A1362LKTTN-T meets industry standards.
7.What is the process for return or replacement of A1362LKTTN-T?
All A1362LKTTN-T units undergo pre-shipment inspection (PSI). If there is an issue with A1362LKTTN-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 A1362LKTTN-T part is unused and in its original packaging.
Return procedure for A1362LKTTN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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