Silicon Laboratories SiM3L1xx, User Manual

Page: 26 / 91

Table 3.12. Voltage Reference Electrical Characteristics
Parameter Symbol Test Condition Min Typ Max Unit
Internal Fast Settling Reference
Output Voltage V
REFFS
–40 to +85 °C,
V
BAT
= 1.8–3.8 V
1.6 1.65 1.7 V
Temperature Coefficient TC
REFFS
— 50 — ppm/°C
Turn-on Time t
REFFS
— — 1.5 μ s
Power Supply Rejection PSRR
REFFS
— 400 — ppm/V
Internal Precision Reference
Valid Supply Range
V
BAT
VREF2X = 0 1.8 — 3.8 V
VREF2X = 1 2.7 — 3.8 V
Output Voltage
V
REFP
25 °C ambient,
VREF2X = 0
1.17 1.2 1.23 V
25 °C ambient,
VREF2X = 1
2.35 2.4 2.45 V
Short-Circuit Current I
SC
— — 10 mA
Temperature Coefficient TC
VREFP
— 35 — ppm/°C
Load Regulation
LR
VREFP
Load = 0 to 200 μ A to
VREFGND
— 4.5 — ppm/ μ A
Load Capacitor
C
VREFP
Load = 0 to 200 μ A to
VREFGND
0.1 — — μ F
Turn-on Time
t
VREFPON
4.7 μ F tantalum, 0.1 μ F
ceramic bypass
— 3.8 — ms
0.1 μ F ceramic bypass — 200 — μ s
Power Supply Rejection PSRR
VREFP
VREF2X = 0 — 320 — ppm/V
VREF2X = 1 — 560 — ppm/V
External Reference
Input Current
I
EXTREF
Sample Rate = 250 ksps;
VREF = 3.0 V
— 5.25 — μ A
Table 3.13. Temperature Sensor
Parameter Symbol Test Condition Min Typ Max Unit
Offset V
OFF
T
A
= 0 °C — 760 — mV
Offset Error* E
OFF
T
A
= 0 °C — ±14 — mV
Slope M — 2.77 — mV/°C
Slope Error* E
M
— ±25 — μ V/°C
Linearity — 1 — °C
Turn-on Time — 1.8 — μ s
*Note:
Absolute input pin voltage is limited by the lower of the supply at VBAT and VIO.
S i M 3 L 1 x x
26 Rev 1.1