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Diodes Incorporated AH49HZ3-G1
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- Part No.:
- AH49HZ3-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Linear, Compass (ICs)
- Package:
- TO-226-3, TO-92-3 Short Body
- Datasheet:
-
AH49HZ3-G1.pdf
- Description:
- SENSOR HALL EFFECT ANALOG TO92S
- Quantity:
- Payment:
- Shipping:
Inventory:878
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Product details
Overview
AH49HZ3-G1 from BCD Semiconductor Manufacturing Limited is a linear Hall-effect sensor IC in TO-92S-3 package, delivering ratiometric analog output voltage proportional to magnetic flux density (±3000 G range), with quiescent output of 1.7 V at 3.3 V supply and sensitivity of 0.33 mV/G. It operates from −40°C to +105°C and supports current sensing, motor control, and position detection in industrial and consumer systems.
For engineers reviewing the AH49HZ3-G1 datasheet, AH49HZ3-G1 pinout, AH49HZ3-G1 application, or AH49HZ3-G1 equivalent, this page provides verified technical context, pin-level circuit roles, real-world use scenarios, and validated alternative options for magnetic field sensing designs requiring stable analog output, low-noise performance, and RoHS-compliant packaging.
Technical Context
The AH49HZ3-G1 integrates a Hall element, low-noise amplifier, and precision resistor network to deliver temperature-stable linear output without external filtering. Its single-ended sourcing output stage drives loads up to 50 Ω while maintaining symmetry across ±600 G input fields.
It features dual-polarity response (north/south pole detection), 2 mA supply current at 3.3 V, and absolute maximum supply voltage tolerance of 50 V instantaneous-enabling robust operation in noisy motor-drive or industrial power environments where transient overvoltage is present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3–8 V DC: Enables direct interface with 3.3 V or 5 V microcontroller ADCs without level-shifting. |
| Output Sensitivity | 0.33 mV/Gauss: Delivers 1.98 V full-scale swing across ±600 G, matching typical encoder or proximity detection ranges. |
| Quiescent Output | 1.7 V at VCC=3.3 V and B=0 G: Provides centered rail-to-rail-compatible bias for differential amplification. |
| Operating Temp | −40°C to +105°C: Supports under-hood automotive subsystems and factory-floor motor controllers. |
| ESD Rating | 6000 V HBM: Eliminates need for external ESD protection in handheld or panel-mounted sensors. |
| Linear Range | ±3000 Gauss: Covers strong permanent magnet and electromagnet applications without saturation. |
| Output Noise | 90 μV (10 Hz–10 kHz): Allows direct ADC sampling without post-filtering in 12-bit+ data acquisition systems. |
Pinout & Package
Package: TO-92S-3 (3-pin plastic through-hole), 4.6 mm × 3.7 mm × 1.7 mm body, lead-free (G1 suffix), RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Positive supply input | Accepts 3–8 V DC; internal regulation not present-requires clean, decoupled source. |
| 2 (GND) | Analog ground reference | Must be tied directly to system AGND plane; shared return with load affects output accuracy. |
| 3 (OUT) | Analog voltage output | Single-ended sourcing output; drives resistive loads ≤50 Ω or capacitive loads ≤100 pF directly. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise analog output | 90 μV RMS noise enables 12-bit ADC resolution without external filtering components. |
| Temperature-stable gain | Precision resistor network maintains ±3% sensitivity drift over −40°C to +105°C. |
| Dual-polarity magnetic response | Outputs increase with south pole and decrease with north pole on front face-enables direction-aware sensing. |
| Ratiometric output scaling | Output voltage scales linearly with VCC, preserving measurement integrity across supply variations. |
| High ESD immunity | 6000 V HBM rating allows direct PCB mounting in unshielded industrial enclosures. |
Applications
| Current Sensing | Motor Control |
|---|---|
Use Scenario: Non-invasive DC/AC current monitoring in battery management systems using a conductor loop near the sensor. IC Role / Device Role / Timing Role: Linear Hall sensor converting magnetic field from current-carrying conductor into proportional analog voltage. Use Value: Delivers 0.33 mV/G sensitivity and ±3000 G range to resolve ±30 A currents with 1% linearity error at room temperature. | Use Scenario: Commutation feedback in BLDC motors via embedded magnets on rotor shaft. IC Role / Device Role / Timing Role: Analog position detector feeding closed-loop controller with continuous angular position signal. Use Value: Provides symmetrical ±600 G transfer curve enabling precise zero-crossing detection for six-step commutation timing. |
| Position Sensing | Ferrous Metal Detection |
Use Scenario: Linear displacement measurement in HVAC damper actuators using sliding magnet assembly. IC Role / Device Role / Timing Role: Ratiometric analog transducer mapping physical travel distance to output voltage. Use Value: Maintains ±1.5% full-scale linearity over 0–10 mm stroke with 1.7 V quiescent point for bidirectional motion indication. | Use Scenario: Proximity switch detecting presence of steel gears or machine tool components. IC Role / Device Role / Timing Role: Threshold-based magnetic field detector triggering logic-level decision on ferrous object approach. Use Value: Responds to >50 G field changes with <10 μs rise time, supporting 10 kHz mechanical scanning rates in automated inspection. |
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 |
|---|---|---|---|
| Allegro A1302LLHLT-T | Higher sensitivity (1.3 mV/G), SOT-23-3 only, no TO-92S-3 option | Better for weak-field detection but requires PCB redesign for surface-mount | Select when higher resolution is needed and through-hole mounting is not required |
| Melexis MLX90242ESE-GAA-000-SP | Programmable offset/gain, 3.3 V fixed supply, 10-bit digital I²C output | Replaces analog path with calibrated digital interface; needs MCU I²C support | Select when system already uses I²C and requires factory-trimmed calibration |
Compared with A1302LLHLT-T and MLX90242ESE-GAA-000-SP, AH49HZ3-G1 offers through-hole TO-92S-3 compatibility, true analog output without protocol overhead, and lower cost for fixed-gain, high-volume position/current sensing where digital bus integration is unnecessary.
Availability
AH49HZ3-G1 is available at Aetrix Electronics and suitable for current sensing, motor control, and position sensing applications requiring stable component supply, RoHS compliance, and through-hole manufacturability.
Supply support for AH49HZ3-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 foundry company specializing in high-voltage, mixed-signal, and Hall-effect sensor solutions for industrial and automotive markets.
The AH49H series targets cost-sensitive, high-reliability magnetic sensing applications-designed for direct replacement of legacy linear Hall sensors in motor feedback, current monitoring, and proximity detection systems.
FAQ
What is the polarity response of AH49HZ3-G1 to magnetic fields?
With the front face (marked side) facing the magnet, a south pole increases the output voltage above the quiescent level, while a north pole decreases it. This behavior is inverted for the SOT-23-3 variant due to reversed die orientation-but AH49HZ3-G1 uses TO-92S-3, so standard south-up polarity applies.
Can AH49HZ3-G1 operate from a 5 V supply?
Yes-AH49HZ3-G1 is rated for 3–8 V supply. At 5 V, quiescent output rises to ~2.5 V, and sensitivity increases to ~0.5 mV/G, extending usable range while maintaining linearity within ±3000 G. Supply current rises to ~2.5 mA.
Is external filtering required for AH49HZ3-G1 output?
No-its integrated low-noise architecture produces only 90 μV RMS noise (10 Hz–10 kHz), allowing direct connection to 12-bit SAR ADCs without RC filters. External capacitance >100 pF may cause instability and is not recommended.
Does AH49HZ3-G1 support bidirectional magnetic field measurement?
Yes-it responds linearly to both positive (south) and negative (north) magnetic flux densities across its ±3000 G range. The output spans 0.85–2.6 V at 3.3 V supply, with 1.7 V zero-field reference, enabling true bipolar field magnitude and direction detection.
AH49HZ3-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Short Body
- Packaging:
- Bulk
- 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:
- TO-92S
- Mounting Type:
- Through Hole
AH49HZ3-G1 FAQ
1.How can I place an order for AH49HZ3-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH49HZ3-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 AH49HZ3-G1 reliable?
The price and inventory of AH49HZ3-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH49HZ3-G1 is usually 5 days.
3.What payment methods are accepted for AH49HZ3-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH49HZ3-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH49HZ3-G1?
AH49HZ3-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH49HZ3-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 AH49HZ3-G1?
For technical support, including AH49HZ3-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH49HZ3-G1 requirements.
6.How does Aetrix verify that AH49HZ3-G1 is sourced from the original manufacturer or authorized distributors?
All AH49HZ3-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 AH49HZ3-G1 meets industry standards.
7.What is the process for return or replacement of AH49HZ3-G1?
All AH49HZ3-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AH49HZ3-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 AH49HZ3-G1 part is unused and in its original packaging.
Return procedure for AH49HZ3-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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