American Audio B20 Bedienungsanleitung Seite 15

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 24
  • Inhaltsverzeichnis
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 14
Si473x-B20
Rev. 0.5 15
3. Typical AM/FM Application Schematic
Notes:
1. Place C1 close to V
DD
pin.
2. All grounds connect directly to GND plane on PCB.
3. Pins 1 and 20 are no connects, leave floating.
4. To ensure proper operation and receiver performance, follow the guidelines in “AN383: Si47xx Antenna, Schematic,
Layout and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers.
5. Pin 2 connects to the FM antenna interface and pin 4 connects to the AM antenna interface.
6. RFGND should be locally isolated from GND.
7. Place Si473x as close as possible to antenna jack and keep the FMI and AMI traces as short as possible.
Optional: Digital Audio Output
20
19
18
17
16
U1
Si473x-GM
SEN
SCLK
SDIO
1
2
3
4
5
15
14
13
12
11
6
7
8
9
10
RST
RCLK
C1
LOUT
ROUT
VBATTERY
2.7 to 5.5 V
GPO1
GPO2/INT
GPO3/DCLK
VIO
1.5 to 3.6 V
FMIP
C2 C3
X1
RCLK
GPO3
Optional: for crystal oscillator option
C5
L1
AM antenna
Optional: AM air loop antenna
RFGND
AMI
C5
T1
L2
DOUT
LOUT/DFS
ROUT/DOUT
GND
VDD
NC
GPO1
GPO2/INT
GPO3/DCLK
DFS
NC
FMI
RFGND
AMI
RST
SEN
SCLK
SDIO
RCLK
VIO
DFS
R1
R2
R3
DOUT
Seitenansicht 14
1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 23 24

Kommentare zu diesen Handbüchern

Keine Kommentare