u-blox LEA-5T User Manual

LEA-5, NEO-5, TIM-5H - Hardware Integration Manual
GPS.G5-MS5-09027-A2 Released Design-in
Page 50 of 68
u-blox
5 LNA
u- blox GPS
receiver
CDMA, GSM,
WCDMA, etc.
Figure 44: Measures against out-band jamming
2.7.8 Recommended parts
Manufacturer
Part ID
Remarks
Parameters to consider
Diode
ON Semiconductor
ESD9R3.3ST5G
ESD9L3.3ST5G
ESD9L5.0ST5G
(2.7.3 C) Standoff Voltage>3.3V
(2.7.3 C) Standoff Voltage>3.3V
(2.7.3 C) Standoff Voltage>5V
• Low Capacitance < 0.5pF
• Standoff Voltage > Voltage for
active antenna
• Low Inductance
SAW
Epcos
B9444: B39162-B9444-M410
B7839: B39162-B7839-K410
(2.7.5) 15dBm Max Power Input
(2.7.5) 25dBm Max Power Input
Murata
SAFEA1G57KD0F00
SAFSE1G57KA0T90
(2.7.5) 1.35x1.05x0.5 mm
(2.7.5) 2.5x2.0x1.0 mm
• Low-loss RF filter for GPS
• Unbalanced to unbalanced
operation
• Insertion Loss
• Bandwith and BW over
te emperature• Electrostatic
Sensitive Device (ESD MM)
CTS
CER0032A
(2.7.5) 4.2x4.0x2.0 mm
> 8kV eSD HBM
LNA
Avago
ALM-1106
ALM-1412
ALM-1712
ALM-2412
(2.7.3 A) LNA
(2.7.5 D) LNA + FBAR Filter
(2.7.5 D) Filter + LNA + FBAR
Filter
(2.7.3 A) LNA + FBAR Filter
pHemt (GaAS)
MAXIM
MAX2659ELT+
(2.7.3 A) LNA
SiGe
Inductor
Murata
LQG15HS27NJ02
Impedance @ freq GPS > 500
Ohm
Capacitor
Murata
GRM1555C1E470JZ01
(2.7.5 F) C, 47p
Ferrite
Bead
Murata
BLM15HD102SN1
(2.7.5 F) FB
High IZI @ fGsm
Feed thru
Capacitor
for Signal
Murata
NFL18SP157X1A3
NFA18SL307V1A45
Monolithic Type
Array Type
Load Capacitance appropriate to
Baude rate
CL < xxx pF
Feed thru
Capacitor
for VCC
Murata
NFM18PC ….
NFM21P….
0603 2A
0805 4A
Rs < 0.5 Ohm
Table 14: Recommended parts for ESD/EOS protection

u-blox LEA-5T Specifications

General

Brand	u-blox
Model	LEA-5T
Category	GPS
Language	English