EFR32FG12 Datasheet, PDF (92/183 Pages) –

EFR32FG12 Flex Gecko Proprietary Protocol SoC Family Data Sheet
Electrical Specifications
4.1.21 Operational Amplifier (OPAMP)
Unless otherwise indicated, specified conditions are: Non-inverting input configuration, VDD = 3.3 V, DRIVESTRENGTH = 2, MAIN-
OUTEN = 1, C_LOAD = 75 pF with OUTSCALE = 0, or C_LOAD = 37.5 pF with OUTSCALE = 1. Unit gain buffer and 3X-gain connection as
specified in table footnotes^{8 1}.
Table 4.47. Operational Amplifier (OPAMP)
Parameter
Supply voltage
Input voltage
Input impedance
Output voltage
Load capacitance²
Output impedance
Symbol
V_OPA
V_IN
R_IN
V_OUT
C_LOAD
R_OUT
Internal closed-loop gain
G_CL
Active current⁴
I_OPA
Test Condition
HCMDIS = 0, Rail-to-rail input
range
HCMDIS = 1
HCMDIS = 0, Rail-to-rail input
range
HCMDIS = 1
OUTSCALE = 0
OUTSCALE = 1
DRIVESTRENGTH = 2 or 3, 0.4 V
≤ V_OUT ≤ V_OPA - 0.4 V, -8 mA <
I_OUT < 8 mA, Buffer connection,
Full supply range
DRIVESTRENGTH = 0 or 1, 0.4 V
≤ V_OUT ≤ V_OPA - 0.4 V, -400 μA <
I_OUT < 400 μA, Buffer connection,
Full supply range
DRIVESTRENGTH = 2 or 3, 0.1 V
≤ V_OUT ≤ V_OPA - 0.1 V, -2 mA <
I_OUT < 2 mA, Buffer connection,
Full supply range
DRIVESTRENGTH = 0 or 1, 0.1 V
≤ V_OUT ≤ V_OPA - 0.1 V, -100 μA <
I_OUT < 100 μA, Buffer connection,
Full supply range
Buffer connection
3x Gain connection
16x Gain connection
DRIVESTRENGTH = 3, OUT-
SCALE = 0
DRIVESTRENGTH = 2, OUT-
SCALE = 0
DRIVESTRENGTH = 1, OUT-
SCALE = 0
DRIVESTRENGTH = 0, OUT-
SCALE = 0
Min
2
1.62
V_VSS
V_VSS
100
V_VSS
—
—
—
—
—
—
0.99
2.93
15.07
—
—
—
—
Typ
—
—
—
—
—
—
—
—
0.25
Max
Unit
3.8
V
3.8
V
V_OPA
V
V_OPA-1.2
V
—
MΩ
V_OPA
V
75
pF
37.5
pF
—
Ω
0.6
—
Ω
0.4
—
Ω
1
—
Ω
1
1.01
-
2.99
3.05
-
15.7
16.33
-
580
—
μA
176
—
μA
13
—
μA
4.7
—
μA
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