EFR32MG13 Mighty Gecko Multi-Protocol Wireless 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, CLOAD = 75 pF with OUTSCALE = 0, or CLOAD = 37.5 pF with OUTSCALE = 1. Unit gain buffer and 3X-gain connection as
specified in table footnotes1 2
.
Table 4.52. Operational Amplifier (OPAMP)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Supply voltage (from AVDD) VOPA
HCMDIS = 0, Rail-to-rail input
range
2
—
3.8
V
HCMDIS = 1
1.62
—
—
3.8
V
V
Input voltage
VIN
HCMDIS = 0, Rail-to-rail input
range
VVSS
VOPA
HCMDIS = 1
VVSS
100
VVSS
—
—
—
VOPA-1.2
—
V
MΩ
V
Input impedance
Output voltage
RIN
VOUT
CLOAD
—
VOPA
75
Load capacitance3
OUTSCALE = 0
OUTSCALE = 1
—
pF
pF
Ω
—
—
37.5
—
Output impedance
ROUT
DRIVESTRENGTH = 2 or 3, 0.4 V
≤ VOUT ≤ VOPA - 0.4 V, -8 mA <
IOUT < 8 mA, Buffer connection,
Full supply range
—
0.25
DRIVESTRENGTH = 0 or 1, 0.4 V
≤ VOUT ≤ VOPA - 0.4 V, -400 µA <
IOUT < 400 µA, Buffer connection,
Full supply range
—
—
—
0.6
0.4
1
—
—
—
Ω
Ω
Ω
DRIVESTRENGTH = 2 or 3, 0.1 V
≤ VOUT ≤ VOPA - 0.1 V, -2 mA <
IOUT < 2 mA, Buffer connection,
Full supply range
DRIVESTRENGTH = 0 or 1, 0.1 V
≤ VOUT ≤ VOPA - 0.1 V, -100 µA <
IOUT < 100 µA, Buffer connection,
Full supply range
Internal closed-loop gain
Active current4
GCL
Buffer connection
3x Gain connection
16x Gain connection
0.99
2.93
15.07
—
1
1.01
3.05
16.33
—
-
-
2.99
15.7
580
-
IOPA
DRIVESTRENGTH = 3, OUT-
SCALE = 0
µA
DRIVESTRENGTH = 2, OUT-
SCALE = 0
—
—
—
176
13
—
—
—
µA
µA
µA
DRIVESTRENGTH = 1, OUT-
SCALE = 0
DRIVESTRENGTH = 0, OUT-
SCALE = 0
4.7
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