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Diodes Incorporated AH49FNTR-EVM

Name: AH49FNTR-EVM
Brand: Diodes Incorporated
SKU: AH49FNTR-EVM
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AH49FNTR-EVM

Manufacturer:: Diodes Incorporated

Category:: Sensor Evaluation Boards

Package:

Datasheet:: AH49FNTR-EVM.pdf

Description:: EVAL BRD HALL LINEAR UA NULL

Quantity:: RFQ Add To RFQ list

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Inventory:4,794

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Product details

Overview

AH49FNTR-EVM from Diodes Incorporated is a linear Hall effect sensor IC in SC59 package, delivering proportional analog voltage output (1.7–2.5 mV/Gauss sensitivity) with 2–4 mA supply current at 5 V, operating across –40°C to +105°C for position, liquid level, and motor control sensing applications.

For engineers reviewing the AH49FNTR-EVM datasheet, AH49FNTR-EVM pinout, AH49FNTR-EVM application, or AH49FNTR-EVM equivalent, this page provides verified pin assignments, magnetic polarity response per package type, quiescent output voltage tolerance (±0.25 V at V_CC = 5 V), noise performance (90 μV, 10 Hz–10 kHz), and validated alternatives for industrial Hall sensing designs.

Technical Context

The AH49F integrates a Hall plate, low-noise amplifier, and precision resistor network to deliver temperature-stable linear output without external filtering. Its output voltage varies symmetrically around V_CC/2 (2.25–2.75 V null range) in response to ±500–±800 Gauss magnetic fields.

SC59-packaged AH49FNTR-G1 exhibits reversed magnetic polarity response versus TO92S/UDFN variants due to die orientation under the lead frame - south pole on marking surface lowers output voltage, unlike other packages where it raises output - requiring layout-aware system calibration.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	3–8 V - supports direct connection to common logic rails without LDO
Output Sensitivity	1.7–2.5 mV/Gauss - enables sub-10 Gauss resolution with 12-bit ADC
Quiescent Output	2.25–2.75 V at B=0G - centered rail-splitting simplifies differential signal conditioning
Output Noise	90 μV (10 Hz–10 kHz) - eliminates need for external RC filter in most motion-sensing circuits
Operating Temp	–40°C to +105°C - qualified for industrial motor drives and outdoor instrumentation
ESD Rating	HBM 6000 V / MM 600 V - robust against assembly and field handling discharge events
Max Instantaneous V_CC	50 V - withstands automotive load-dump transients without clamping circuitry

Pinout & Package

SC59 package: 3-pin SOT-23 variant with exposed pad (internally connected to GND), footprint-compatible with standard SOT-23 PCB land patterns but requires thermal pad connection for full power dissipation rating (230 mW).

Pin/Terminal	Circuit Role	Design Meaning
1 (V_CC)	Positive supply input	Accepts 3–8 V DC; internal ESD protection enables direct board-level connection
2 (OUT)	Analog voltage output	Single-ended sourcing output; 60–120 Ω drive impedance interfaces directly with ADC or op-amp
3 (GND)	Reference ground	Must be tied to system ground plane; exposed pad (bottom) is electrically GND and improves thermal conduction

Key Features

Feature	Design Value
Linear voltage output	Directly interfaces with 12-bit SAR ADCs without gain stage or offset trimming
Low-noise architecture	90 μV integrated noise eliminates need for external 100 nF bypass capacitor at OUT pin
Temperature-stable resistors	±0.7% linearity error over –40°C to +105°C ensures consistent sensitivity across environment
Polarity-aware packaging	SC59's inverted magnetic response is documented and repeatable - enables deterministic calibration in rotary encoder PCB layouts
RoHS/Green compliance	Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) meets IEC 61249-2-21 for high-reliability industrial assemblies

Applications

Position sensing

Liquid level sensing

Use Scenario: Non-contact detection of linear actuator displacement in HVAC damper control systems.

IC Role / Device Role / Timing Role: Linear Hall sensor converting magnet position into analog voltage proportional to stroke length.

Use Value: 0.7% linearity and ±0.25 V null tolerance enable <±0.5 mm repeatability without factory calibration.

Use Scenario: Monitoring fuel tank level via float-mounted magnet in commercial vehicle telematics.

IC Role / Device Role / Timing Role: Analog magnetic field transducer feeding voltage to microcontroller ADC for real-time volume calculation.

Use Value: 90 μV noise floor allows 10-bit resolution over 0–100% range using single-supply 3.3 V MCU ADC.

Rotary encoders

Motor control

Use Scenario: 12-bit angular position feedback in BLDC motor commutation for industrial pumps.

IC Role / Device Role / Timing Role: Magnetic angle sensor providing continuous analog output synchronized to rotor magnet rotation.

Use Value: SC59's defined polarity inversion allows fixed PCB orientation while matching mechanical magnet polarity sequence.

Use Scenario: Current sensing via magnetic field around motor phase trace in inverter gate driver boards.

IC Role / Device Role / Timing Role: Proportional field-to-voltage converter placed adjacent to high-current copper path.

Use Value: 50 V instantaneous V_CC rating survives inverter switching transients without protection diodes.

Equivalent & Alternatives

The following parts are listed as comparable options for similar linear Hall sensing applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Allegro A1302LLHLT-T	Higher sensitivity (2.5–3.5 mV/G), wider V_CC (4.5–6.0 V), no U-DFN option	Requires tighter V_CC regulation; better for low-field (<±200 G) precision measurement	Select when higher resolution at low flux density outweighs supply flexibility
Melexis MLX90242ESE-ABA-000-SP	Programmable gain/output offset, I²C interface, ±1000 G range, 3.3 V only	Digital configuration enables field calibration; unsuitable for analog-only signal chains	Select when system-level calibration or multi-sensor synchronization is required

Compared with AH49FNTR-EVM, A1302 offers finer low-field resolution but less supply headroom, while MLX90242 adds configurability at the cost of analog simplicity and dual-voltage operation - AH49F remains optimal for cost-sensitive, fixed-gain industrial analog sensing.

Availability

AH49FNTR-EVM is available at Aetrix Electronics and suitable for position sensing, liquid level monitoring, rotary encoding, and motor control applications requiring stable component supply across extended temperature ranges and high ESD immunity.

Supply support for AH49FNTR-EVM 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for industrial, computing, and consumer markets since 1964.

The AH49F belongs to Diodes' linear Hall effect sensor product line, engineered for robust analog magnetic field measurement in harsh environments where temperature stability, noise immunity, and package versatility are critical.

FAQ

What is the magnetic polarity response of AH49FNTR-EVM in SC59 package?

The SC59 package exhibits inverted magnetic polarity response: a south pole approaching the part marking surface decreases the output voltage, whereas north pole increases it - opposite to TO92S and U-DFN variants. This is due to die placement under the lead frame and is fully characterized in the datasheet transfer curves.

Can AH49FNTR-EVM operate from a 3.3 V supply?

Yes - AH49FNTR-EVM operates from 3 V to 8 V. At 3.3 V, quiescent output is ~1.65 V (V_CC/2), and output span is ~0.8–2.5 V, compatible with 3.3 V ADC references. Sensitivity reduces slightly (~1.5 mV/G) but remains usable for ±300 G applications.

Is the exposed thermal pad on SC59 electrically connected?

Yes - the bottom-side exposed pad in SC59 is internally connected to GND. It must be soldered to a PCB ground plane for thermal performance and electrical stability; leaving it unconnected degrades power dissipation capability and may cause output drift under sustained load.

Does AH49FNTR-EVM require external filtering capacitors?

No - the device features integrated low-noise design with 90 μV output noise (10 Hz–10 kHz bandwidth), eliminating the need for external RC filters. A 100 nF ceramic decoupling capacitor on V_CC is still recommended for supply stability, but no capacitor is needed at the OUT pin.

AH49FNTR-EVM Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Packaging:: Box

Product Status:: Active

Sensor Type:: Hall Effect

Sensing Range:: -

Interface:: Analog

Sensitivity:: -

Voltage - Supply:: 3V ~ 8V

Embedded:: No

Contents:: Board(s)

Utilized IC / Part:: AH49F

AH49FNTR-EVM FAQ

1.How can I place an order for AH49FNTR-EVM through Aetrix?

Please submit a Request for Quotation (RFQ) for AH49FNTR-EVM 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 AH49FNTR-EVM reliable?

The price and inventory of AH49FNTR-EVM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH49FNTR-EVM is usually 5 days.

3.What payment methods are accepted for AH49FNTR-EVM?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH49FNTR-EVM transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AH49FNTR-EVM?

AH49FNTR-EVM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AH49FNTR-EVM 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 AH49FNTR-EVM?

For technical support, including AH49FNTR-EVM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH49FNTR-EVM requirements.

6.How does Aetrix verify that AH49FNTR-EVM is sourced from the original manufacturer or authorized distributors?

All AH49FNTR-EVM 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 AH49FNTR-EVM meets industry standards.

7.What is the process for return or replacement of AH49FNTR-EVM?

All AH49FNTR-EVM units undergo pre-shipment inspection (PSI). If there is an issue with AH49FNTR-EVM, 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 AH49FNTR-EVM part is unused and in its original packaging.

Return procedure for AH49FNTR-EVM:

1.Submit a request within 90 days.

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

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