User's Manual

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FIBOCOM FM150-NA User Manual Page 34 of 72
Recommended
capacitance
Application
Description
18pF, 10pF,
8.2pF, 6.8pF,
3.3pF
1500/1700/1800/1900,
2100/2300, 2500/2600MHz,
3500/3700MHz, 5GHz frequency
band
Filter out medium/high frequency band RF
interference
The stable power supply can ensure the normal operation of FM150 module, and the ripple of the power
supply should be less than 300mV in design. Because module supports 7CA download and EN-DC, when
module operates with the maximum data transfer throughput, the maximum operating current can reach
to upper 2500mA. It requests the power source voltage should not be lower than 3.135V, otherwise module
may shut down or restart. The power supply requirement is shown in Figure 3-3:
Burst transmit Burst transmit
min:3.135V
Power supply
Ripple≤300mV
Drop
VBAT >3.135V
Figure 3-3 Power Supply Requirement
3.2.2 Logic level
The FM150 module 1.8V logic level definition as shown in the following table:
Parameters
Minimum
Typical
Maximum
Unit
1.8V logic level
1.71
1.8
1.89
V
V
IH
1.3
1.8
1.89
V
V
IL
-0.3
0
0.3
V
The FM150 module 3.3V logic level definition as shown in the following table:
Parameters
Minimum
Typical
Maximum
Unit
3.3V logic level
3.135
3.3
3.465
V
V
IH
2.3
3.3
3.465
V
V
IL
-0.3
0
0.3
V