Azoteq's IQS620(A) ProxFusion IC is a multifunctional capacitance, Hall effect, and inductance sensor designed for applications where any or all of the technologies may be required. The IQS620(A) is an ultra-low power solution designed for short or long term activations through any of the sensing channels. The IQS620(A) is fully I2C compatible and can be configured to output main trigger events on GPIOs.
Features
- Unique combination of sensing technologies:
- Capacitive sensing
- Hall effect sensing
- Inductive sensing
- Capacitive sensing:
- Full auto-tuning with adjustable sensitivity
- 2 pF to 200 pF external capacitive load capability
- Hall effect sensing:
- On-chip Hall effect measurement plates
- Dual direction Hall switch sensor UI
- 2 level detection (widely variable)
- Detection range 10 mT to 200 mT
- Inductive sensing:
- 2 level detection and hysteresis for inductive sensing
- Only external sense coil required (PCB trace)
- Low profile DFN (3x3) - 10-pin package
- Low power consumption:
- 90 µA (100 Hz response, 3 ch capacitive)
- 32 µA (20 Hz response, 3 ch capacitive)
- 2.5 µA (4 Hz response, 1 ch cap. wake-up)
- Multiple integrated UI options based on years of experience in sensing on fixed and mobile platforms:
- Proximity wake-up/touch
- SAR
- Automatic tuning implementation (ATI) – performance enhancement (10-bit)
- Minimal external components
- Standard I2C interface (polling with sub 1 ms clock stretching)
- Optional RDY indication for event mode operation
- Supply voltage:
- IQS620: 2.0 V to 3.3 V
- IQS620A: 1.8 V to 3.3 V
Applications
- Mobile electronics (phones/tablets)
- SAR safety requirements for laptops, tablets, and phones
- Wearable devices
- White goods and appliances
- Human interface devices
- Proximity activated backlighting
- Applications with long-term activation
- Aftermarket automotive
