A simple amplifying circuit is designed, as shown in Figure 1. When there is no input signal, solder ADA4807 directly, power on, and ±5 power supply. It's very hot in a few seconds. Finally, by changing to AD8672, it is no longer hot. The highest voltage of AD8672 is 36V.
Excuse me, what are the reasons for the heating of the chip ADA7804? ? ? Please give pointers, thank you all.
Kathleen ポストする November 7, 2020
No GND in the picture
Tara ポストする November 7, 2020
This is not the case, there is -5V. Other chips are fine
Kathleen ポストする November 7, 2020
Where is the reference point without GND?
Priscilla ポストする November 7, 2020
SIG1 SIG2 is what signal, amplitude. , What is the frequency, and whether the output waveform can be measured.
Is the op amp oscillating? ? ?
