EFR32MG12 Datasheet, PDF (98/181 Pages) Silicon Laboratories – Health and Wellness

EFR32MG12 Mighty Gecko Multi-Protocol Wireless SoC Family Data Sheet
Electrical Specifications
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Note:
1. Specified configuration for 3X-Gain configuration is: INCBW = 1, HCMDIS = 1, RESINSEL = VSS, V_INPUT = 0.5 V, V_OUTPUT = 1.5
V. Nominal voltage gain is 3.
2. If the maximum C_LOAD is exceeded, an isolation resistor is required for stability. See AN0038 for more information.
3. When INCBW is set to 1 the OPAMP bandwidth is increased. This is allowed only when the non-inverting close-loop gain is ≥ 3,
or the OPAMP may not be stable.
4. Current into the load resistor is excluded. When the OPAMP is connected with closed-loop gain > 1, there will be extra current to
drive the resistor feedback network. The internal resistor feedback network has total resistance of 143.5 kOhm, which will cause
another ~10 μA current when the OPAMP drives 1.5 V between output and ground.
5. Step between 0.2V and V_OPA-0.2V, 10%-90% rising/falling range.
6. From enable to output settled. In sample-and-off mode, RC network after OPAMP will contribute extra delay. Settling error < 1mV.
7. In unit gain connection, UGF is the gain-bandwidth product of the OPAMP. In 3x Gain connection, UGF is the gain-bandwidth
product of the OPAMP and 1/3 attenuation of the feedback network.
8. Specified configuration for Unit gain buffer configuration is: INCBW = 0, HCMDIS = 0, RESINSEL = DISABLE. V_INPUT = 0.5 V,
V_OUTPUT = 0.5 V.
9. When HCMDIS=1 and input common mode transitions the region from V_OPA-1.4V to V_OPA-1V, input offset will change. PSRR
and CMRR specifications do not apply to this transition region.
4.1.22 Pulse Counter (PCNT)
Parameter
Input frequency
Symbol
F_IN
4.1.23 Analog Port (APORT)
Table 4.48. Pulse Counter (PCNT)
Test Condition
Min
Typ
Max
Unit
Asynchronous Single and Quad-
—
—
20
MHz
rature Modes
Sampled Modes with Debounce
—
—
filter set to 0.
8
kHz
Table 4.49. Analog Port (APORT)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Supply current^{2 1}
I_APORT
Operation in EM0/EM1
Operation in EM2/EM3
—
7
—
μA
—
915
—
nA
Note:
1. Specified current is for continuous APORT operation. In applications where the APORT is not requested continuously (e.g. peri-
odic ACMP requests from LESENSE in EM2), the average current requirements can be estimated by mutiplying the duty cycle of
the requests by the specified continuous current number.
2. Supply current increase that occurs when an analog peripheral requests access to APORT. This current is not included in repor-
ted module currents. Additional peripherals requesting access to APORT do not incur further current.
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