SM3321A Datasheet (NPC) - Optical Sensor

SM3321A, Optical Sensor

No.

Name I/O 1 VSS S Ground Function 2 OUT O Analog output 3 NC - 4 OEN IPU Output enable control input 5 VDD S Supply voltage 6 GS2 I Transimpedance (I/V) amplifier resistance control input 7 GS1 I Post-amplifier gain control input 8 GS0 I Post-amplifier gain control input *.

S: Powe

SM3321A Optical Sensor IC OVERVIEW The SM3321A is an image sensor IC with a built-in single element photodiode of 0.5mm2.

The IC can detect range of light wave from visible to infrared in itself.

It is a superior sensor with noise immunity to integrate photodetection circuits which consist of photodiodes and operational amplifiers.

The gain of amplifiers in SM3321A is settable by setting external terminals, so that it can detect range of light wave from visible to infrared with high sensitivity.

SM3321A Features

* ▪ High-sensitivity preamplifier for visible to infrared detection using a single IC ▪ Gain setting and output control function by pin terminal setting (GS0, GS1, GS2, OEN) ▪ Transimpedance range: 2MΩ to 48MΩ ▪ Photodiode detector size: 0.22mm×2.34mm (0.5mm2 photodetector surface area) ▪Anti-reflecti