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Diodes Incorporated AH8500-FDC-7
- Part No.:
- AH8500-FDC-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Motor Drivers, Controllers
- Package:
- -
- Datasheet:
-
AH8500-FDC-7.pdf
- Description:
- SENSOR LINEAR ANALOG 6UDFN
- Quantity:
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Inventory:3,787
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Product details
Overview
AH8500-FDC-7 from Diodes Incorporated is a micropower linear Hall effect sensor with 8-bit analog output resolution, ratiometric voltage output proportional to perpendicular magnetic flux density, ±430G sensing range, 2.1mV/G sensitivity at 1.8V, and 8.9µA sleep-mode supply current - deployed in battery-powered position detection for digital cameras, gaming controllers, and appliance lid sensors.
For engineers reviewing the AH8500-FDC-7 datasheet, AH8500-FDC-7 pinout, AH8500-FDC-7 application, or AH8500-FDC-7 equivalent, this page delivers verified technical context on chopper-stabilized architecture, ENABLE-controlled sampling modes (20Hz–7.14kHz), null voltage stability at VDD/2, input-referred noise (0.36G rms @1.8V), and U-DFN2020-6 thermal performance across –40°C to +85°C.
Technical Context
The AH8500 integrates a chopper-stabilized Hall plate, 8-bit ADC/DAC, oscillator-based timing control, and ENABLE-driven awake/sleep state machine. Its output maintains VDD/2 quiescent voltage with <1% offset and achieves 99.7–100.4% span linearity over full temperature range.
Sampling is fully governed by the ENABLE pin: continuous high enables 6.25kHz auto-run mode; external PWM enables programmable rates up to 7.14kHz; grounded ENABLE forces 8.9µA sleep mode with output held at VDD/2. Internal 10µs clock drives 140µs conversion cycles and 20µs minimum enable pulse width.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensing Range | ±430G - supports robust position detection across mechanical travel without saturation in consumer and industrial enclosures. |
| Output Resolution | 8-bit (VDD/256 step) - delivers 7mV/LSB typical output voltage granularity at 1.8V for precise analog field measurement. |
| Sensitivity | 2.1mV/G @1.8V - enables high-resolution analog output scaling for low-field applications like button press detection. |
| Supply Current | 8.9µA sleep / 1.16mA max sampling @1.8V - achieves micropower operation suitable for multi-year battery life in IoT endpoints. |
| Noise Performance | 0.36G rms input-referred noise @1.8V - ensures stable DC-level output under low-frequency mechanical vibration in home appliances. |
| Operating Voltage | 1.6V–3.6V - compatible with single-cell Li-ion, coin cell, and regulated 3.3V/1.8V rails without level-shifting. |
| Temperature Range | –40°C to +85°C - validated for reliable operation in automotive cabin modules, industrial HMI, and white goods environments. |
Pinout & Package
U-DFN2020-6 package: 2.0mm × 2.0mm × 0.55mm low-profile exposed-pad construction, RoHS-compliant, halogen-free, with internal NC pins and thermally optimized pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUTPUT | Analog voltage output | Ratiometric 0–(255/256)VDD output; maintains VDD/2 in sleep mode; 10kΩ DC output resistance limits drive capability. |
| 2 NC | No connection | Internally unconnected; may be left floating or tied to GND for mechanical stability without electrical impact. |
| 3 VDD | Power supply input | Accepts 1.6–3.6V; requires 100nF bypass capacitor placed adjacent to pin for noise immunity and power stabilization. |
| 4 ENABLE | Mode control input | Active-high logic input; internally pulled low; controls sleep/auto-run/external-drive modes and sampling rate via pulse width and frequency. |
| 5 GND | Ground reference | Primary return path for supply and output; must be connected to low-impedance system ground plane. |
| 6 NC | No connection | Internally unconnected; same handling as Pin 2 - no electrical function, optional GND tie for PCB layout symmetry. |
| Pad | Thermal pad | Exposed center pad; not electrically connected; recommended to connect to GND plane for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized architecture | Eliminates 1/f noise and offset drift, enabling <1% VDD null offset and ±3% sensitivity error over –40°C to +85°C. |
| ENABLE-driven micropower operation | Supports 20Hz–7.14kHz sampling via external PWM; achieves 22µW typical power at 1.8V with 50ms enable pulses. |
| Ratiometric 8-bit analog output | Output scales linearly with VDD; preserves measurement accuracy across battery discharge or supply ripple without calibration. |
| High ESD immunity | 6kV HBM rating protects against handling damage and system-level transients in handheld and industrial assembly environments. |
| Small-footprint U-DFN2020-6 | 2.0×2.0mm footprint saves >60% board area vs SOIC-8; exposed pad improves thermal resistance to 120°C/W junction-to-board. |
Applications
| Camera Button Detection | Gaming Joystick Control |
|---|---|
Use Scenario: Detecting half-press and full-press actuation of shutter buttons in compact digital still/video cameras. IC Role / Device Role / Timing Role: Linear Hall sensor measuring magnet displacement along Z-axis; outputs analog voltage proportional to button travel distance. Use Value: Enables dual-stage trigger response with sub-millimeter resolution using single-component solution and no moving contacts. |
Use Scenario: Measuring X/Y angular deflection of analog joystick levers in handheld gaming consoles. IC Role / Device Role / Timing Role: Dual-axis position sensor (two AH8500s per joystick); each monitors orthogonal magnet movement with 3.35G/LSB resolution. Use Value: Delivers smooth, jitter-free analog control with <0.36G rms noise floor and zero contact wear over 1M+ actuations. |
| Appliance Lid Position Sensing | Industrial Tray Travel Monitoring |
Use Scenario: Confirming open/closed status and intermediate angle of washing machine or microwave oven doors. IC Role / Device Role / Timing Role: Proximity sensor detecting magnet mounted on hinge; operates in low-power sleep mode until door motion triggers wake-up. Use Value: Reduces system standby current to <10µA while maintaining real-time position awareness for safety interlocks. |
Use Scenario: Tracking linear travel of sliding trays in automated test equipment and medical analyzers. IC Role / Device Role / Timing Role: Linear position transducer mounted on tray rail; measures absolute displacement up to ±430G with 8-bit repeatability. Use Value: Replaces optical encoders in dusty environments with solid-state reliability and immunity to contamination. |
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 | 4.5–6.0V supply only; 2.5mV/G sensitivity; no ENABLE pin; fixed 10kHz sampling; 8mA typical supply current. | Requires external voltage regulation for 1.8V systems; unsuitable for micropower or duty-cycled operation. | Select when higher supply voltage and continuous sampling are acceptable, and board space allows SOIC-8 package. |
| Melexis MLX90242ESE-GAA-000-RE | 3.0–5.5V supply; 12-bit output; I²C digital interface; 100µA active current; no analog output or ENABLE control. | Requires microcontroller I/O and firmware integration; lacks ratiometric analog output for direct ADC interfacing. | Select when digital bus communication, higher resolution, and factory-programmable calibration are required. |
Compared with A1302LLHLT-T and MLX90242ESE-GAA-000-RE, the AH8500-FDC-7 uniquely combines ultra-low sleep current (8.9µA), ENABLE-driven sampling flexibility (20Hz–7.14kHz), ratiometric 8-bit analog output, and 1.6–3.6V operation - making it optimal for space-constrained, battery-powered position sensing where analog simplicity and micropower coexist.
Availability
AH8500-FDC-7 is available at Aetrix Electronics and suitable for camera shutter actuation, gaming joystick control, appliance lid monitoring, and industrial tray position sensing requiring stable component supply across extended production lifecycles.
Supply support for AH8500-FDC-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 semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and sensing applications.
The AH8500 belongs to Diodes' linear Hall effect sensor product line, engineered specifically for ultra-low-power, high-accuracy analog position and proximity detection in portable and energy-sensitive systems.
FAQ
What is the minimum ENABLE pulse width required to initiate a conversion cycle?
The AH8500 requires a minimum 20µs pulse width on the ENABLE pin to start one sample/conversion cycle, with a recommended minimum of 40µs for robust timing margin. This pulse triggers a 140µs internal conversion period, during which supply current rises to 1.35mA (at 1.8V) before returning to sleep current.
How does the AH8500 maintain output stability during sleep mode?
In sleep mode (ENABLE = GND), the AH8500 holds its last valid output voltage at VDD/2 with no drift, enabled by internal bias retention and chopper-stabilized architecture. Output remains accessible and stable for monitoring without waking the device - critical for low-power wake-on-change architectures.
Can the AH8500 operate from a 1.6V coin cell battery throughout its discharge curve?
Yes - the AH8500 operates continuously from 1.6V to 3.6V with guaranteed specifications across that range. At 1.6V, it delivers ±370G sensing range, 1.79mV/G sensitivity, and maintains <1% VDD offset, enabling full functionality across the entire discharge profile of CR2032 and similar cells.
What is the purpose of the two NC pins in the U-DFN2020-6 package?
Pins 2 and 6 are internally unconnected (NC) and serve mechanical and layout purposes only. They may be left floating or tied to GND for improved solder joint reliability and thermal conduction - but they carry no electrical function and do not affect device operation or specification compliance.
AH8500-FDC-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- -
- Function:
- -
- Output Configuration:
- -
- Interface:
- -
- Technology:
- -
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- -
- Voltage - Supply:
- -
- Voltage - Load:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
AH8500-FDC-7 FAQ
1.How can I place an order for AH8500-FDC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH8500-FDC-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 AH8500-FDC-7 reliable?
The price and inventory of AH8500-FDC-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH8500-FDC-7 is usually 5 days.
3.What payment methods are accepted for AH8500-FDC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH8500-FDC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH8500-FDC-7?
AH8500-FDC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH8500-FDC-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 AH8500-FDC-7?
For technical support, including AH8500-FDC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH8500-FDC-7 requirements.
6.How does Aetrix verify that AH8500-FDC-7 is sourced from the original manufacturer or authorized distributors?
All AH8500-FDC-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 AH8500-FDC-7 meets industry standards.
7.What is the process for return or replacement of AH8500-FDC-7?
All AH8500-FDC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH8500-FDC-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 AH8500-FDC-7 part is unused and in its original packaging.
Return procedure for AH8500-FDC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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