hsdl-9100 Avago Technologies, hsdl-9100 Datasheet - Page 12

• Manufacturer Part Number: hsdl-9100
• Description: Surface-mount Proximity Sensor
• Manufacturer: Avago Technologies

The next section discusses interfacing configuration with
general processor including the recommended signal
conditional circuitry.
The DET_A pin of HSDL-9100 is connected to the filter
circuit then to the comparator before interfacing with
the GPIO pin. The filter circuit is implement to provide
the ambient light filter. The PWM is pulse to drive the
LED_K pin alternative the external timer 555 can also be
replaced. The detector distance can be varies with the
increase/decrease of the LED current supply.
Interfacing circuitry with signal conditional circuitry
Figure 15. HSDL9100 configuration with controller chipset
1
controller chipset
GPIO
PWM
220 Ω
BC848
10 Ω
VCC
LEDA
LEDK
GND
36 KΩ
VCC
DETK
DETA
GND
22 KΩ
Signal conditioning circuitry
24 KΩ
220 pf
HSDL-9100
VCC
GND
47 kΩ
300 Ω
GND
VCC
BC846B
1 MΩ