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Capacitive Fingerprint Sensor
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Ovweview:
The HF-108 fingerprint image sensor is based on capacitive-touch technology with hardened
surface and enhanced ESD strength. The build-in analog and digital circuitries minimize the
number of external components, and provide easy-to-use , standard SPI interface to micro-processors.
The operation of HF-108 is as following, a fingerprint image captured by pixel array, delivery fingerprint
ridge or valley signals to A/D converter and digital processor, then to the serial peripheral interface for
data-reading. The internal operation parameters and interface speed can also be configured to meet
various finger conditions.
The whole new hardware Auto 3A Engine can calibrate image background gray scale, auto detect finger
and adaptive to dry/wet finger. To achieve target of taking best quality fingerprint image in one shot.
AD-S10G is a new type of capacitance fingerprint sensor that is manufactured on the glass substrate. The active area is designed to meet FAP10 specification that is as large as 12.8x18mm , which can acquire a full fingerprint image at one touch.
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