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AD8572 DC Signal Voltage Amplifier Two-stages Operational Amplifier 20x100 Gain DC 3V-5.5V

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1). The two stages operational amplifier, which is built-in AD8572 chip with terminal version. The board size becomes larger, and the high quality terminals are added.
It can amplify the weak signal of DC. Such as DC voltage signal, DC pulse signal. It can also enlarge the millivolt signal even the microvolt.
2). There are two potentiometers. They adjust the magnification of the first and second stages respectively. The total magnification is the product of two stages’ magnification.
So the magnification will be adjusted to a great extent. (If the first stage is magnified to 20 times and the second level is magnified to 100 times, then the total magnification is 2000 times)

1>. Power supply voltage: 3-5.5V DC power supply, power supply current 40MA. It is suggested that the power supply be less than or equal to 500MA.
2>. Current output: maximum 15-20MA
3>. Magnification: Magnification: total magnification = first stage magnification * second stage magnification
4>. Board size: length 50mm *width 26mm
5>. the two potentiometer on the board clockwise rotation is adjusted multiple times.

Using attention:
For the weak signal, especially the MV level signal, the amplifier and comparator module are used to avoid switching power supply as far as possible.
It's better to use batteries. Secondly, pure linear power supply (power frequency transformer + rectifier + filter) is adopted.
If the project can not use the linear power supply of power frequency transformer, then the switching power supply or linear voltage regulator module can be used to realize the semi linear power supply.

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AD8572 DC Signal Voltage Amplifier Two-stages Operational Amplifier 20x100 Gain DC 3V-5.5V