iC-LQNP

PULSE AND AC LIGHT SENSOR

Rev C1, Page 9/11

APPLICATION HINTS

Example Output Signals

Figure 5: Output signal for 2 µs pulse light.

Transmitter: LED 875 nm with tr = tf = 0.1 µs;

VCC = 5 V, RL = 10 kΩ, CL = 20 pF;

Chan 1: V(OUT), 1 V/DIV vertically,

Chan 2: I(LED), 20 mA/DIV vertically

Figure 6: Output signal for 2 µs pulse light with noise

(accumulated over 256 samples)

Figure 7: Output signal for 2 µs pulse light, superim-

posed by ambient light of approx. 15000 Lux

Figure 8: As in Fig. 7, accumulated for visibility over

256 samples. Despite of bright ambient light

condition noise remains low level.