C8051F330_07 Datasheet, PDF (65/216 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F330/1/2/3/4/5
Table 7.1. Voltage Reference Electrical Characteristics
V_DD = 3.0 V; –40 to +85 °C unless otherwise specified.
Parameter
Conditions
Min Typ Max
Internal Reference (REFBE = 1)
Units
Output Voltage
25 °C ambient
2.38 2.44 2.50
V
VREF Short-Circuit Current
—
—
10
mA
VREF Temperature
Coefficient
— 15 — ppm/°C
Load Regulation
Load = 0 to 200 µA to AGND
— 0.5 — ppm/µA
VREF Turn-on Time 1
4.7 µF tantalum, 0.1 µF ceramic
bypass
—
2
—
ms
VREF Turn-on Time 2
0.1 µF ceramic bypass
— 20 —
µs
VREF Turn-on Time 3
no bypass cap
— 10 —
µs
Power Supply Rejection
— 140 —
ppm/V
External Reference (REFBE = 0)
Input Voltage Range
Input Current
ADC Bias Generator
Reference Bias Generator
Sample Rate = 200 ksps; VREF =
3.0 V
Power Specifications
BIASE = ‘1’ or AD0EN = ‘1’ or
IOSCEN = ‘1’
REFBE = ‘1’ or TEMPE = ‘1’ or
IDA0EN = ‘1’
0
—
V_DD
V
— 12 —
µA
— 100 —
µA
— 40 —
µA
Rev. 1.5
65