u-blox UBX-G7020 User Manual

UBX-G7020 - Hardware Integration Manual
Component Selection
GPS.G7-HW-10003 Objective Specification Page 54 of 74
3.15 Inductor for DCDC converter (L2)
ID
Parameter
Value
1.1
Self resonance frequency (SRF)
> 30 MHz
1.2
DC resistance (DCR)
< 0.2 Ohm
1.3
Rated current
> 0.5 A
1.3
Inductance
1.0…2.2 uH
Table 32: DCDC inductor specifications
It is recommended to use a shielded inductor.
Manufacturer
Order No.
Comments
muRata
LQM2MPN2R2NG0
Low DCR, for best efficiency of DCDC (~85%)
muRata
LQM21PN1R0MC0
Low height, 0.5mm
Table 33: Recommend parts list for DCDC inductor
3.16 Standard capacitors
Name
Use
Figure
Type / Value
C1
RF-input DC block
Figure 17
COG 47P 5% 25V
C2
RF-input matching network
Figure 17
COG 2P7 +/-0.1P 50V
C3
Decoupling VDD_LNA / VDD_ANA
Figure 5
X5R 1U0 10% 6.3V
C4
Decoupling LDO_RF_OUT
Figure 2
X5R 1U0 10% 6.3V
C5
Decoupling LDO_X_OUT
Figure 2
X5R 1U0 10% 6.3V
C6
Decoupling V_CORE (DCDC converter used)
Figure 3
X5R 4U7 10% 6.3V
C7
Decoupling V_DCDC_IN
Figure 3
X5R 4U7 10% 6.3V
C8
Decoupling VDD_IO
Figure 2
X5R 1U0 10% 6.3V
C9
Decoupling V_BCKP
Figure 2
X5R 1U0 10% 6.3V
C10
Decoupling LDO_B_OUT
Figure 2
X5R 2U2 10% 6.3V
C11
Decoupling V_CORE
Figure 2
X5R 1U0 10% 6.3V
C12
Decoupling of USB LDO
Figure 21
Depends on USB LDO (U2) specification
C13
Decoupling of USB LDO
Figure 21
Depends on USB LDO (U2) specification
C14
Load capacitor at XTAL_O
Figure 9
COG 33P 1% 25V
C15
Load capacitor at XTAL_I
Figure 9
COG 27P 1% 25V
C16
Decoupling LDO_C_OUT
Figure 2
X5R 1U0 10% 6.3V
C17
Bias-T
Figure 20
X7R 10N 10% 16V
C18
Decoupling VDD_IO at SQI flash supply pin
Figure 2
X5R 1U0 10% 6.3V
Table 34: Standard capacitors
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u-blox UBX-G7020 Specifications

General

Brand	u-blox
Model	UBX-G7020
Category	GPS
Language	English