# how many times can TSM102 amplifiers achieve？

Thread Starter

#### LAOADAM

Joined Nov 21, 2018
174
If use two of its amplifiers + one of its comparators, totally how many times amplify can get? in this case, can the other one Comparators still function?

Thanks
Adam

#### MrChips

Joined Oct 2, 2009
20,295
It depends on your signal frequency.
Look at the Gain vs Frequency curve (Figure 6) in the data sheet.
And it depends on your supply voltage. The output voltage cannot exceed the supply voltage.

Thread Starter

#### LAOADAM

Joined Nov 21, 2018
174
It depends on your signal frequency.
Look at the Gain vs Frequency curve (Figure 6) in the data sheet.
And it depends on your supply voltage. The output voltage cannot exceed the supply voltage.
Thank you MrChips.
The signal is DC, ~10 mV, .checked the Figure 6, seems db about 50?
My supply voltage is 12Vdc, can I consider 50*50*50 total db?

#### MrChips

Joined Oct 2, 2009
20,295
You add dB. Hence two amplifiers of +50dB each would be +100dB which is a gain of 100,000.
10mV x 100,000 = 1000V. You cannot get this from a 12VDC supply.

Thread Starter

#### LAOADAM

Joined Nov 21, 2018
174
You add dB. Hence two amplifiers of +50dB each would be +100dB which is a gain of 100,000.
10mV x 100,000 = 1000V. You cannot get this from a 12VDC supply.
Thank you MrChips,
I just not sure how to calculate.

#### bertus

Joined Apr 5, 2008
20,329
Hello,

Here is a little tutorial on the Decibel.

Bertus

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