# Photodiode

## Photodiode & Phototransistor Difference

https://www.vishay.com/docs/84154/appnotesensors.pdf

## Photodiode BPW34 Amplifier

Because the rise time & fall time is 100ns.
I can buy this compent in taiwan local shop, not online shop.

### WebShop

https://jin-hua.com.tw/page/product/show.aspx?num=40494&kind=2866&lang=TW

### Datasheet

https://www.vishay.com/en/product/81521/

## Reference Circuit

https://www.electronics-lab.com/project/photo-diode-amplifier-visible-light-using-opa381-arduino-nano-shield/

https://www.electronics-lab.com/project/photo-diode-amplifier/

https://offerman.industries/products/ambient-light-detector-5v-based-on-photodiode-and-opamp-no-ldr-i-e-no-cadmium

https://www.ti.com/lit/ug/tidu535/tidu535.pdf

### Really Simple circuit
https://www.tindie.com/products/gtalusan/pwm-visualizer/

## Reference Design Guide

https://www.ti.com/lit/ug/tidu535/tidu535.pdf
https://www.analog.com/media/en/reference-design-documentation/reference-designs/cn0312.pdf

### OPA

| Part | single-supply | UGBW |
|:-------:|:-------------:|:------:|
| LM6171 | 10V | 76 MHz |
| THS4211 | 5V | 1GHz |
| LMH6654 | 5V | 250MHz |
| OPA690 | 5V | 300MHz |

### Circuit Simulation SOP

https://www.youtube.com/watch?v=Wg7uSs4J_0U&list=PL-reVyOy0P87Rh0A5iAa0bIVUVvFffghv&index=3

https://www.ti.com/lit/an/sboa220b/sboa220b.pdf

https://www.ti.com/content/dam/videos/external-videos/en-us/8/3816841626001/6289331603001.mp4/subassets/photodiode_amplifier_circuit.pdf

## Verify KiCad Simulation Result

### Reference Result
[Photodiode Circuit Design Wizard](https://tools.analog.com/en/photodiode/)


### Kicad Result


ISIN For AC Analysis
IPULSE For Tran Analysis


## Desgin two Circuit BandWidth 20KHz & 200KHz

## Layout

## Measure In Real World