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Diodes Incorporated AH1711Q-SA-7
- Part No.:
- AH1711Q-SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH1711Q-SA-7.pdf
- Description:
- HALL LATCH SWITCH SOT23 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,510
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Product details
Overview
AH1711Q-SA-7 from Diodes Incorporated is an AEC-Q100 Grade 0 qualified automotive Hall effect latch IC in SOT23 package, designed for brushless DC motor commutation and wheel speed sensing. It operates from 2.4V to 5.5V, features ±7 G operate point (Bop), ±18 G release point (Brp), and delivers latched open-drain output with 30 kHz sensing bandwidth at -40°C to +150°C.
For engineers reviewing the AH1711Q-SA-7 datasheet, AH1711Q-SA-7 pinout, AH1711Q-SA-7 application, or AH1711Q-SA-7 equivalent, this device supports high-reliability position sensing in demanding automotive subsystems including fuel pumps, sunroofs, and angular encoders where magnetic hysteresis stability and chopper-stabilized offset cancellation are critical.
Technical Context
The AH1711Q-SA-7 implements a chopper-stabilized architecture with dynamic offset cancellation and internal bandgap-regulated supply, enabling ±7 G Bop and ±18 G Brp over -40°C to +150°C. Its latch operation maintains output state until magnetic polarity reversal crosses hysteresis threshold.
It uses a single-pole (South-activated) latching mechanism with open-drain output, requiring external pull-up. Power-on time is 38 µs typical, and it achieves 30 kHz sensing bandwidth with <1 µs output rise/fall times under RL = 1 kΩ and CL = 20 pF conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.4V to 5.5V - Enables direct interface with 3.3V and 5V automotive microcontrollers without level-shifting. |
| Operate Point (Bop) | ±7 Gauss (typ) - High sensitivity enables detection with small magnets or increased air gaps in mechanical assemblies. |
| Release Point (Brp) | ±18 Gauss (typ) - Provides 11 G hysteresis to reject noise and prevent chatter near switching thresholds. |
| Output Type | Open-drain - Allows wired-OR configuration and flexible voltage translation via external pull-up resistor. |
| Sensing Bandwidth | 30 kHz - Supports accurate RPM measurement up to 1.8 million RPM in high-speed BLDC motor applications. |
| Operating Temperature | -40°C to +150°C - Qualified for under-hood and transmission-mounted position sensing per AEC-Q100 Grade 0. |
| ESD Rating | HBM 8 kV, CDM 2 kV - Robust against assembly and field electrostatic discharge in automotive production environments. |
Pinout & Package
Package: SOT23 - Industry-standard 3-pin surface-mount package with 0.915 mm nominal body height and 2.40 mm length, optimized for automated placement and thermal performance in compact automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Power supply input - Must be stabilized with 10–100 nF bypass capacitor to ensure noise immunity and stable startup. |
| 2 | OUTPUT | Open-drain output - Sinks up to 20 mA; requires external pull-up resistor (RL) to host logic rail (e.g., 3.3V or 5V). |
| 3 | GND | Ground reference - Shared return path for supply and output current; must be low-impedance to minimize offset drift. |
Key Features
| Feature | Design Value |
|---|---|
| Latch Operation | Maintains output state after magnetic trigger until opposite polarity exceeds Brp - eliminates need for continuous polling in microcontroller firmware. |
| Chopper Stabilization | Reduces thermal drift of Bop/Brp to <±0.1 G/°C - ensures consistent switching points across full automotive temperature range. |
| Bandgap Regulator | Stabilizes internal circuit supply independently of VDD variation - maintains timing and sensitivity across 2.4–5.5V operating range. |
| RF Noise Immunity | Validated against ISO 11452-2/4 - suppresses interference from ignition systems and infotainment RF sources without external filtering. |
Applications
| BLDC Motor Commutation | Wheel Speed Sensing |
|---|---|
|
Use Scenario: Detect rotor position in 3-phase brushless DC motors for electronic control units (ECUs) in electric power steering and HVAC blowers. IC Role / Device Role / Timing Role: Latched Hall sensor providing synchronized edge-triggered signals to MCU timer inputs for precise 120° commutation sequencing. Use Value: ±7 G sensitivity allows use of low-cost ferrite magnets; 30 kHz bandwidth supports >10,000 RPM motor operation with sub-degree phase accuracy. |
Use Scenario: Monitor rotational speed of ABS wheel hubs using passive magnetic encoder rings mounted on CV joints. IC Role / Device Role / Timing Role: Magnetic latch generating clean, jitter-free pulse trains for ECU-based RPM calculation and slip detection. Use Value: -40°C to +150°C operation ensures reliability during cold starts and brake-induced hub heating; hysteresis prevents false counts from vibration. |
| Fuel Pump Position Feedback | Sliding Door Angular Encoder |
|
Use Scenario: Sense cam position inside brushless fuel pump modules to verify actuator stroke and detect stall conditions. IC Role / Device Role / Timing Role: Latched output directly interfaces with pump driver ASIC to confirm mechanical end-stop engagement. Use Value: AEC-Q100 Grade 0 qualification and 8 kV HBM ESD rating withstand harsh under-dash environments and automated test handling. |
Use Scenario: Track angular displacement of sliding door tracks in premium vehicle architectures using multi-pole magnet arrays. IC Role / Device Role / Timing Role: High-sensitivity latch detecting fine positional changes for soft-close and obstacle detection algorithms. Use Value: ±18 G Brp provides wide hysteresis margin against mechanical backlash and mounting misalignment in large moving assemblies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL33031QSA-7 | Bop = ±12 G, Brp = ±24 G; higher hysteresis (12 G vs. 11 G); same SOT23 package and AEC-Q100 Grade 0 rating. | Better suited for noisy environments with strong stray fields due to wider magnetic window; slightly lower sensitivity reduces false triggers. | Select when system-level magnetic interference exceeds ±10 G and tighter hysteresis control is required for robustness. |
| TLE4961-2K | Push-pull output (not open-drain); Bop = ±10 G, Brp = ±20 G; integrated reverse-polarity protection; larger SOIC-8 package. | Eliminates need for external pull-up but increases PCB footprint; reverse-voltage tolerance simplifies power design in battery-connected modules. | Choose when board space permits SOIC-8 and system-level reverse-battery protection is prioritized over minimal footprint. |
Compared with AL33031QSA-7 and TLE4961-2K, the AH1711Q-SA-7 offers the highest sensitivity (±7 G Bop) in the smallest SOT23 form factor, making it optimal for space-constrained, low-field applications like miniature fuel pumps and compact rotary knobs-while retaining full automotive qualification and chopper-stabilized precision.
Availability
AH1711Q-SA-7 is available at Aetrix Electronics and suitable for brushless DC motor commutation, wheel speed sensing, and fuel pump position feedback requiring stable component supply across automotive production lifecycles.
Supply support for AH1711Q-SA-7 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 automotive, industrial, and computing markets.
The AH1711Q-SA-7 belongs to Diodes' AEC-Q100 qualified Hall effect sensor product line, engineered specifically for contactless position and speed sensing in safety-critical automotive subsystems.
FAQ
What is the magnetic polarity response of AH1711Q-SA-7?
The AH1711Q-SA-7 is South-pole activated: its open-drain output switches low when exposed to sufficient South magnetic flux perpendicular to the top of the SOT23 package, and remains latched until North flux drops below the release point (Brp). This polarity behavior is fixed and not configurable.
Does AH1711Q-SA-7 require an external bypass capacitor?
Yes - a 10 nF to 100 nF ceramic capacitor between VDD and GND is mandatory per the datasheet to stabilize the internal bandgap regulator, suppress supply noise, and ensure reliable power-on behavior within the specified 38 µs startup time.
Can AH1711Q-SA-7 operate at 2.4V while maintaining full specification?
Yes - all key parameters including Bop (±7 G), Brp (±18 G), 30 kHz bandwidth, and 20 mA output sink capability are guaranteed across the full 2.4V to 5.5V range, validated from -40°C to +150°C per AEC-Q100 Grade 0 requirements.
How does chopper stabilization improve performance in AH1711Q-SA-7?
Chopper stabilization dynamically cancels input-offset voltage drift caused by temperature and stress, reducing Bop/Brp shift to <±0.1 G/°C and enabling stable switching thresholds across the full automotive temperature range without calibration.
AH1711Q-SA-7 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:
- Discontinued at Digi-Key
- Function:
- Latch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- ±2.9mT Trip, ±2mT Release
- Test Condition:
- -40°C ~ 150°C
- Voltage - Supply:
- 2.4V ~ 5.5V
- Current - Supply (Max):
- 3.2mA
- Current - Output (Max):
- 60mA
- Output Type:
- Open Drain
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AH1711Q-SA-7 FAQ
1.How can I place an order for AH1711Q-SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH1711Q-SA-7 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 AH1711Q-SA-7 reliable?
The price and inventory of AH1711Q-SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH1711Q-SA-7 is usually 5 days.
3.What payment methods are accepted for AH1711Q-SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH1711Q-SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH1711Q-SA-7?
AH1711Q-SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH1711Q-SA-7 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 AH1711Q-SA-7?
For technical support, including AH1711Q-SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH1711Q-SA-7 requirements.
6.How does Aetrix verify that AH1711Q-SA-7 is sourced from the original manufacturer or authorized distributors?
All AH1711Q-SA-7 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 AH1711Q-SA-7 meets industry standards.
7.What is the process for return or replacement of AH1711Q-SA-7?
All AH1711Q-SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH1711Q-SA-7, 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 AH1711Q-SA-7 part is unused and in its original packaging.
Return procedure for AH1711Q-SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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