EVA-7M - Hardware Integration Manual
UBX-12003235 - R05
Production Information
Appendix
Page 37 of 42
B
Component selection
This section provides information about components that are critical for the performance of the EVA-7M GNSS
receiver module.
Recommended parts are selected on a data sheet basis only.
Temperature range specifications need only be as wide as required by a particular application. For the purpose of
this document, specifications for industrial temperature range (-40 C
…
+85 C) are provided.
B.1
External RTC (Y1)
ID
Parameter
Value
1
Frequency Specifications
1.1
Oscillation mode
Fundamental Mode
1.2
Nominal frequency at 25 ºC
32.768 kHz
1.3
Frequency calibration tolerance at 25 ºC
< ±100 ppm
2
Electrical specifications
2.1
Load capacitance C
L
7 pF
2.2
Equivalent series resistance R
S
< 100 k
Ω
Table 10: RTC crystal specifications
Manufacturer
Order No.
Micro Crystal
CC7V-T1A 32.768 kHz 7.0 pF +/- 100 ppm
Table 11: Recommend parts list for RTC crystal
B.2
RF band-pass filter (F1)
Depending on the application circuit, consult manufacturer datasheet for DC, ESD and RF power ratings!
Manufacturer Order No.
System supported
Comments
TDK/ EPCOS
B8401: B39162-B8401-P810
GPS+GLONASS
High attenuation
TDK/ EPCOS
B3913: B39162B3913U410
GPS+GLONASS
For automotive application
TDK/ EPCOS
B9416: B39162B9416K610
GPS
High input power
TDK/ EPCOS
B4310: B39162B4310P810
GPS+GLONASS
Compliant to the AEC-Q200 standard
TDK/ EPCOS
B9482: B39162B9482P810
GPS+GLONASS
Low insertion loss
muRata
SAFEA1G58KA0F00
GPS+GLONASS
Only for mobile application
muRata
SAFFB1G58KA0F0A
GPS+GLONASS
Only for mobile application
Triquint
856561
GPS
Compliant to the AEC-Q200 standard
Table 12: Recommend parts list for RF band-pass filter
