Datasheet
DocID025147 Rev 7 115/138
STM32F302x6 STM32F302x8 Electrical characteristics
117
PGA gain Non inverting gain value -
-2-
-
-4-
-8-
-16-
R
network
R2/R1 internal resistance values
in PGA mode
(3)
Gain=2 - 5.4/5.4 -
kΩ
Gain=4 - 16.2/5.4 -
Gain=8 - 37.8/5.4 -
Gain=16 - 40.5/2.7 -
PGA gain error PGA gain error - -1% - 1% %
I
bias
OPAMP input bias current - - - ±0.2
(4)
µA
PGA BW
PGA bandwidth for different non
inverting gain
PGA Gain = 2,
Cload = 50pF,
Rload = 4 KΩ
-4-
MHz
PGA Gain = 4,
Cload = 50pF,
Rload = 4 KΩ
-2-
PGA Gain = 8,
Cload = 50pF,
Rload = 4 KΩ
-1-
PGA Gain = 16,
Cload = 50pF,
Rload = 4 KΩ
-0.5-
V
n
Voltage noise density
@ 1KHz, Output
loaded with 4 KΩ
-109-
@ 10KHz, Output
loaded with 4 KΩ
-43-
1. Guaranteed by design.
2. The saturation voltage can also be limited by the I
LOAD
(drive current).
3. R2 is the internal resistance between OPAMP output and OPAMP inverting input.
R1 is the internal resistance between OPAMP inverting input and ground.
The PGA gain =1+R2/R1
4. Mostly TTa I/O leakage, when used in analog mode.
Table 73. Operational amplifier characteristics
(1)
(continued)
Symbol Parameter Condition Min Typ Max Unit
nV
Hz
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