H330SS LGA Module Hardware User Manual Page 17 of 38
5
Hardware Interface
5.1
Power Interface
5.1.1
VBAT
H330S module requires a 3.3 V~ 4.2V DC power supply to provide 2A as GSM transmitter maximum current.
Input power supply requirements:
Parameter
Minimum Value
Recommended Value
Maximum Value
Unit
VBAT
3.3
3.8
4.2
V
Note:
1. Supply voltage fluctuations need to be lower than 300mV.
2. Supply voltage drop minimum value needs to be higher than 3.3V.
Filter capacitor description:
Recommended capacitor
Application
Description
1000uF
GSM Transmit current serge
Minimizes power supply losses during transmit
bursts. Use maximum possible value.
10nF, 100nF
Digital signal to noise
Filtering interference from clock and data sources
8.2pF, 10pF
1800/1900/2100 MHz GSM
bands
Filters transmission EMI.
33pF, 39pF
850/900 MHz GSM bands
Filters transmission EMI.
5.1.2
Power Consumption
Parameter
Description
Condition
Typical Value
Unit
I off
RTC mode
60
uA
I idle
Idle mode
GSM
13
mA
WCDMA
13
mA
I sleep
Low power
mode
DRX
2
2
mA
DRX
5
2
DRX
9
2
I
GSM voice -
1 TX slot
1 Rx slot
GSM-RMS
GSM850 PCL
5
230
mA
10
80