104 IEEE Bandgap Reference

104 : IEEE Bandgap Reference

Design render

How it works

It is simple band gap reference. Design was adopted from https://github.com/IHP-GmbH/IHP-AnalogAcademy/blob/main/modules/module_1_bandgap_reference/part_3_layout/BGR_layout/final_bandgapreference/full_bandgap_layout_filled.gds. Main work was to insert it correctly into IHP PDK grid and take car of its integration into multi project wafer from Tiny Tapout.

How to test

Connect 5uA current source to Iout to bias opamp. Check if Vbg voltage is bandgap refernece (aorund 600mV). Check if bandgap reference voltage stays at 600mV over full temperature range -40 to 125 Celcius degries.

External hardware

Simple current mirror with potentiometer to set 5uA current should do the work.

IO

#InputOutputBidirectional
0
1
2
3
4
5
6
7

Analog pins

uaPCB PinInternal indexDescription
0C0iout
1D1Vbg
2F2Vout_amp

Chip location

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