iC-LQNP is a sensor for pulse and alternating light with an integrated photodiode.
AC signals are amplified whereas background light is electronically suppressed with over 60 dB (at 100 Hz). The center frequency of the band-pass filter is approximately 140 kHz.
Features
Fast response amplifier with on-chip photodiode
High interference immunity due to monolithic design
Active photodiode area of ca. 1 mm²
Suitable for visible light and near infrared
Integrated band-pass filter with 140 kHz center frequency
Maximum gain obtained for pulse light of 1.4 µs and upwards
High LF and DC (ambient) light suppression
Transfer characteristics irrespective of ambient light level
Soft signal and noise limiter with excess ambient light
Fast recovery from flashes
Complementary analog current source outputs, transimpedance can be set by external resistor
Single 5 to 12 V supply, low power consumption also with bright ambient light
Applications
Receiver for through beam and reflection light barriers with background suppression (sunlight) e.g. for presence detection in power operated gates, doors and windows etc.
