BAT32G1x9 user manual | Chapter 18 Programmable Gain Amplifier (PGA)
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18.4 Operation of a programmable gain amplifier
Amplifying the analog voltage of the PGAIN pin input, there are 7 options for amplification gain: 4x, 8x, 10x,
12x, 14x, 16x, 32x.
The amplified voltage can be used for the analog input of the
A/
D
converter and
the positive input signal
of comparator 0 (CMP 0).
The steps to start and stop the programmable gain amplifier are as follows.
18.4.1 The start-up procedure for the programmable gain amplifier
Taking PGA0
as an example, the setup steps are as follows:
Note 1: Setting the PGAEN bit to 1 requiresaPGA settling time of 1 0 us. Then start the A/D
conversion.