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Diodes Incorporated AH49HNTR-G1
- Part No.:
- AH49HNTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Linear, Compass (ICs)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH49HNTR-G1.pdf
- Description:
- SENSOR HALL ANALOG SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,470
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Product details
Overview
AH49HNTR-G1 from BCD Semiconductor Manufacturing Limited is a linear Hall-effect IC designed for contactless magnetic field sensing in analog signal chains. It delivers ratiometric output voltage (1.45–1.85 V at B=0 G, 0.33 mV/G sensitivity) with ±3000 G linear range, operates from 3–8 V supply, consumes 2 mA at 3.3 V, and supports -40°C to 105°C ambient temperature - used in motor commutation feedback and precision position sensing circuits.
For engineers reviewing the AH49HNTR-G1 datasheet, AH49HNTR-G1 pinout, AH49HNTR-G1 application, or AH49HNTR-G1 equivalent, key selection criteria include its single-ended sourcing output architecture, TO-92S-3/SOT-23-3 package compatibility, low-noise 90 µV output (10 Hz–10 kHz), ±6000 V HBM ESD rating, and magnetic polarity response reversal between package types.
Technical Context
The AH49HNTR-G1 integrates a Hall element, low-noise amplifier, and precision resistor network to deliver stable, temperature-compensated analog output proportional to applied magnetic flux density. Its functional block includes on-chip voltage regulation and output stage optimized for direct interface with ADCs or op-amp stages without external filtering.
Magnetic polarity response differs by package: TO-92S-3 outputs increase with south pole approach to marked face, while SOT-23-3 exhibits reversed polarity behavior due to die orientation. Output symmetry degrades above 8 V supply, limiting recommended operation to ≤8 V per datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3–8 V - Enables direct interface with 3.3 V or 5 V microcontroller ADC reference rails |
| Output Sensitivity | 0.33 mV/G - Delivers 1.98 V full-scale swing across ±600 G, supporting high-resolution field measurement |
| Quiescent Output | 1.45–1.85 V at B=0 G - Centered near mid-supply for maximum dynamic range in single-supply systems |
| Linear Range | ±3000 Gauss - Supports robust detection of strong magnets or ferrous targets at extended air gaps |
| Output Noise | 90 µV (10 Hz–10 kHz) - Eliminates need for external RC filtering in most industrial signal conditioning paths |
| ESD Rating | 6000 V HBM - Ensures reliability during PCB handling and end-equipment assembly without added protection |
| Operating Temp | -40°C to 105°C - Validated for under-hood automotive, factory-floor motor drives, and outdoor industrial enclosures |
Pinout & Package
AH49HNTR-G1 is supplied in SOT-23-3 package (3-pin surface-mount), with lead-free RoHS-compliant "G1" marking and tape-and-reel packaging (TR). Dimensions: 2.65 × 1.50 × 1.45 mm (max height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SOT-23) | VCC | Positive supply input - Must be decoupled with ≥0.1 µF ceramic capacitor placed within 2 mm of pin |
| 2 (SOT-23) | OUT | Analog voltage output - Sourcing current only; requires external pull-down or ADC input impedance >10 kΩ |
| 3 (SOT-23) | GND | Reference ground - Shared return path for supply and output; must connect to low-impedance system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise analog output | 90 µV RMS noise eliminates need for external filtering components in 10 Hz–10 kHz bandwidth applications |
| Temperature-stable resistors | Integrated precision thin-film resistors reduce quiescent output drift to <±10 mV over -40°C to 105°C |
| Single-supply sourcing output | Active-high output stage simplifies interface with SAR ADCs and rail-to-rail op-amps without level-shifting |
| High ESD immunity | 6000 V HBM rating enables direct integration into unshielded industrial sensor modules without guard rings |
| Reversed polarity support | SOT-23-3 package provides inverted magnetic response vs. TO-92S-3 - allows mechanical layout flexibility in dual-package designs |
Applications
| Motor Commutation Feedback | Rotary Encoder Interface |
|---|---|
Use Scenario: Detecting rotor magnet position in BLDC motors for six-step commutation timing. IC Role / Device Role / Timing Role: Analog magnetic field transducer providing continuous angular position feedback to MCU PWM controller. Use Value: Enables precise 60° electrical phase alignment with ±2° angular error, reducing torque ripple and acoustic noise. | Use Scenario: Converting rotational motion of a shaft-mounted magnet into analog voltage waveform for direction and speed decoding. IC Role / Device Role / Timing Role: Linear field-to-voltage converter feeding comparator or ADC to generate quadrature or sine/cosine signals. Use Value: Delivers monotonic 0.33 mV/G output enabling sub-degree resolution when paired with 12-bit ADC sampling at 10 kHz. |
| Ferrous Metal Detection | Liquid Level Sensing |
Use Scenario: Detecting presence/absence of steel parts on conveyor belts or in automated assembly fixtures. IC Role / Device Role / Timing Role: Threshold-based proximity sensor using magnetic field perturbation caused by ferrous material displacement. Use Value: Achieves 5 mm detection range with ±0.5 mm repeatability due to ±3000 G linear range and low 90 µV noise floor. | Use Scenario: Monitoring fuel or coolant level via float-mounted permanent magnet moving past fixed AH49HNTR-G1 sensor. IC Role / Device Role / Timing Role: Analog transducer converting vertical magnet position into linear voltage proportional to fill height. Use Value: Provides 0.85–2.6 V output span across full tank travel, enabling direct 10-bit ADC digitization without gain staging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear Hall-effect sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Allegro A1302LLHLT-T | Higher sensitivity (1.3 mV/G), wider supply range (3–6 V), but no 50 V transient rating | Optimized for battery-powered portable devices; lacks AH49HNTR-G1's 6000 V HBM ESD rating | Select when higher resolution is required and ESD environment is controlled |
| Melexis US5881KSE-AAA-000-SP | Integrated voltage regulator, 3.3 V fixed output, lower quiescent current (1.5 mA), but narrower linear range (±1600 G) | Better for ultra-low-power IoT nodes; insufficient for high-field industrial metal detection | Select when system-level supply regulation is absent and power budget is <2 mA |
Compared with A1302LLHLT-T and US5881KSE-AAA-000-SP, AH49HNTR-G1 offers superior ESD robustness and extended linear range at the cost of slightly higher supply current - making it preferred for harsh industrial motor control and metal detection where field strength and reliability dominate.
Availability
AH49HNTR-G1 is available at Aetrix Electronics and suitable for motor control, rotary encoding, ferrous metal detection, and liquid level sensing requiring stable component supply across automotive Tier-2, industrial automation, and consumer appliance programs.
Supply support for AH49HNTR-G1 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
BCD Semiconductor Manufacturing Limited is a Shanghai-based analog IC design and wafer fabrication company specializing in high-reliability power management and sensor solutions for industrial and automotive markets.
The AH49H series belongs to BCD's linear Hall-effect sensor product line, engineered for cost-sensitive, high-volume applications demanding analog field-to-voltage conversion with minimal external components and wide temperature operation.
FAQ
What is the magnetic polarity response of AH49HNTR-G1 in SOT-23-3 package?
The SOT-23-3 package exhibits reversed magnetic polarity response relative to TO-92S-3: a north pole approaching the marked face lowers output voltage, while a south pole raises it. This inversion results from die flip during packaging and is confirmed in Figure 5 of the datasheet. Users must verify polarity during mechanical integration.
Can AH49HNTR-G1 operate directly from a 12 V supply?
No - the absolute maximum supply voltage is 10 V DC, and instantaneous voltage must not exceed 50 V. Operating above 8 V increases supply current and reduces output symmetry, violating recommended conditions. A 3–8 V regulated supply is required; use an LDO if interfacing with 12 V systems.
Does AH49HNTR-G1 require external filtering capacitors?
No external filtering is needed for typical 10 Hz–10 kHz applications due to its integrated low-noise design (90 µV RMS). However, a 0.1 µF ceramic decoupling capacitor is mandatory between VCC and GND, placed within 2 mm of the pins to suppress high-frequency supply noise and ensure stability.
How does temperature affect the quiescent output voltage?
Over -40°C to 105°C, quiescent output varies by ≤±10 mV due to on-chip precision resistor matching and thermal compensation circuitry. Figure 9 shows <10 mV drift across full range at 3.3 V supply, enabling accurate zero-field calibration without software compensation in most industrial deployments.
AH49HNTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Hall Effect
- Axis:
- Single
- Output Type:
- Analog Voltage
- Sensing Range:
- ±300mT
- Voltage - Supply:
- 3V ~ 8V
- Current - Supply (Max):
- 3.2mA
- Current - Output (Max):
- -
- Resolution:
- -
- Bandwidth:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Supplier Device Package:
- SOT-23-3
- Mounting Type:
- Surface Mount
AH49HNTR-G1 FAQ
1.How can I place an order for AH49HNTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH49HNTR-G1 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 AH49HNTR-G1 reliable?
The price and inventory of AH49HNTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH49HNTR-G1 is usually 5 days.
3.What payment methods are accepted for AH49HNTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH49HNTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH49HNTR-G1?
AH49HNTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH49HNTR-G1 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 AH49HNTR-G1?
For technical support, including AH49HNTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH49HNTR-G1 requirements.
6.How does Aetrix verify that AH49HNTR-G1 is sourced from the original manufacturer or authorized distributors?
All AH49HNTR-G1 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 AH49HNTR-G1 meets industry standards.
7.What is the process for return or replacement of AH49HNTR-G1?
All AH49HNTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AH49HNTR-G1, 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 AH49HNTR-G1 part is unused and in its original packaging.
Return procedure for AH49HNTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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