4117047
Rev 2.2
December 18, 2015
17
2. Detailed Interface Specifications
Note:
If not specified, all electrical values are given for VBATT=3.7V and an operating temperature of
25°C.
For standard applications, VBATT and VBATT_PA must be tied externally to the same power
supply. For some specific applications, AirPrime HL8518, HL8528 and HL8529 modules support
separate VBATT and VBATT_PA connection if requirements below are fulfilled.
2.1. Power Supply
The AirPrime HL8518, HL8528 and HL8529 modules are supplied through the VBATT signal.
2.1.1.
Electrical Characteristics
The following table describes the electrical characteristics of the Power Supply interface.
Table 5.
Power Supply
Supply
Minimum
Typical
Maximum
VBATT voltage (V)
3.2
1
3.7
4.5
VBATT_PA voltage (V) Full Specification
3.2
1
3.7
4.5
VBATT_PA voltage (V) Extended Range
2.8
2
3.7
4.5
1
This value has to be guaranteed during the burst
2
No guarantee of 3GPP performances over extended range
Note:
Load capacitance for VBATT is around 30µF ± 20% embedded inside the module.
Load capacitance for VBATT_PA is around 20µF ± 20% embedded inside the module.
2.1.2.
Pin Description
The following table describes the pin description of the Power Supply interface.
Table 6.
Power Supply Pin Description
Pin Number
Signal Name
I/O
Description
63
VBATT
I
Power supply (base band)
61, 62
VBATT_PA
I
Power supply (radio frequency)
37, 39, 48, 67-70, 167-234
GND
Ground
