u-blox UBX-G7020 - 3.10 LNA_IN ESD protection diode (D1); 3.11 Operational amplifier (U6); 3.12 Open-drain buffer (U4, U7 and U8); 3.13 Antenna supervisor switch transistor (T1)

UBX-G7020 - Hardware Integration Manual
Component Selection
GPS.G7-HW-10003 Objective Specification Page 53 of 74
3.10 LNA_IN ESD protection diode (D1)
Manufacturer
Order No.
ON Semiconductor
ESD9R3.3ST5G
Table 26: Recommend parts list for LNA_IN ESD protection diode
3.11 Operational amplifier (U6)
Manufacturer
Order No.
Linear Technology
LT6000
Linear Technology
LT6003
Table 27: Recommend parts list for Operational Amplifier
3.12 Open-drain buffer (U4, U7 and U8)
Manufacturer
Order No.
Fairchild
NC7WZ07P6X
Table 28: Recommend parts list for open-drain buffer
3.13 Antenna supervisor switch transistor (T1)
Manufacturer
Order No.
Vishay
Si1016X-T1-E3
Table 29: Recommend parts list for antenna supervisor switch transistor (p-channel MOSFET)
3.14 RF inductors
Name
Use
Figure
Type / Value
L1
RF-input matching network
Figure 17
8.2N 2%
L3
RF Bias-T
Figure 20
27N 5% (Impedance > 500 ohm @GPS frequency)
Table 30: RF inductors
Manufacturer
Order No.
Murata Manufacturing Company, Ltd.
LQG15H Series
Murata Manufacturing Company, Ltd.
LQP15M Series
Murata Manufacturing Company, Ltd.
LQW15A Series
Table 31: Recommend parts list for RF inductors
The inductance of an inductor also depends on the signal frequency. When selecting a particular
inductor the inductance value at 1.575 GHz must match the value provided in Table 30.
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