DataSheet.es    


PDF B3790 Data sheet ( Hoja de datos )

Número de pieza B3790
Descripción SAW Components
Fabricantes EPCOS 
Logotipo EPCOS Logotipo



Hay una vista previa y un enlace de descarga de B3790 (archivo pdf) en la parte inferior de esta página.


Total 7 Páginas

No Preview Available ! B3790 Hoja de datos, Descripción, Manual

www.DataSheet4U.com
SAW Components
Data Sheet B3790

1 page




B3790 pdf
SAW Components
Low-loss Filter
Data Sheet
B3790
433,92 MHz
Matching network to 50 (element values depend on pcb layout and equivalent circuit)
Ls1 = 56 nH
Ls2 = 56 nH
Lk = 56 nH
Minimising the crosstalk
For a good ultimate rejection a low crosstalk is necessary. Low crosstalk can be realised with
a good RF layout. The major crosstalk mechanism is caused by the “ground-loop” problem.
Grounding loops are created if input-and output transducer GND are connected on the top-side
of the PCB and fed to the system grounding plane by a common via hole. To avoid the common
ground path, the ground pin of the input- and output transducer are fed to the system ground
plane (bottom PCB plane) by their own via hole. The transducers’ grounding pins should be
isolated from the upper grounding plane.
A common GND inductivity of 0.5nH degrades the ultimate rejection (crosstalk) by 20dB.
The optimised PCB layout, including matching network for transformation to 50 Ohm, is shown
here. In this PCB layout the grounding loops are minimised to realise good ultimate rejection.
Optimised PCB layout for SAW filters in QCC8B package, pinning 2,5 (top side, scale 1:1)
The bottom side is a copper plane (system ground area). The input and output grounding pins
are isolated and connected to the common ground by separated via holes.
For good contact of the upper grounding area with the lower side it is necessary to place
enough via holes.
5 Dec 01, 2004

5 Page










PáginasTotal 7 Páginas
PDF Descargar[ Datasheet B3790.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
B3790SAW ComponentsEPCOS
EPCOS
B3791SAW ComponentsEPCOS
EPCOS
B37920(B37920 - B37949) Multilayer Ceramic CapacitorsEPCOS
EPCOS
B37921Jxxxx(B37xxxKxxx) Multilayer Ceramic CapacitorsEPCOS
EPCOS

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar