Datasheet
DS9118 Rev 14 123/149
STM32F303xB STM32F303xC Electrical characteristics
125
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-
en 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 be also limited by the Iload (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 77. Operational amplifier characteristics
(1)
(continued)
Symbol Parameter Condition Min Typ Max Unit
nV
Hz
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