EFM8LB1 Datasheet, PDF (22/70 Pages) Silicon Laboratories – The EFM8LB1 device family are fully integrated, mixed-signal system-on-a-chip MCUs. Highlighted features are listed below

4.1.10 Voltage Reference
Table 4.10. Voltage Reference
Parameter
Internal Fast Settling Reference
Output Voltage
(Full Temperature and Supply
Range)
Temperature Coefficient
Turn-on Time
Power Supply Rejection
On-chip Precision Reference
Valid Supply Range
Output Voltage
Turn-on Time, settling to 0.5 LSB
Load Regulation
Load Capacitor
Short-circuit current
Power Supply Rejection
External Reference
Input Current
Symbol Test Condition
V_REFFS
TC_REFFS
t_REFFS
PSRR_REF
FS
V_DD
1.2 V Output
2.4 V Output
V_REFP
1.2 V Output, V_DD = 3.3 V, T = 25
°C
1.2 V Output
2.4 V Output, V_DD = 3.3 V, T = 25
°C
2.4 V Output
t_VREFP
4.7 µF tantalum + 0.1 µF ceramic
bypass on VREF pin
0.1 µF ceramic bypass on VREF
pin
LR_VREFP Load = 0 to 200 µA to GND
C_VREFP Load = 0 to 200 µA to GND
ISC_VREFP
PSRR_VRE
FP
I_EXTREF
ADC Sample Rate = 1 Msps;
VREF = 3.0 V
Min
1.62
—
—
—
2.2
2.7
1.195
1.18
2.39
2.36
—
—
—
0.1
—
—
—
EFM8LB1 Data Sheet
Electrical Specifications
Typ
Max
Unit
1.65
1.68
V
50
—
ppm/°C
—
1.5
μs
400
—
ppm/V
—
—
1.2
1.2
2.4
2.4
3
100
TBD
—
—
TBD
3.6
3.6
1.205
1.22
2.41
2.44
—
—
—
—
8
—
V
V
V
V
V
V
ms
µs
µV/µA
µF
mA
ppm/V
5
—
μA
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