SI4709-B-GM Silicon Laboratories Inc, SI4709-B-GM Datasheet - Page 12

• Manufacturer Part Number: SI4709-B-GM
• Description: IC FM RADIO TUNER 20-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: -r

Specifications of SI4709-B-GM

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Si4708/09-B
2. Typical Application Schematic
Notes:
3. Bill of Materials
12
Component(s)
C1
R1
U1
1. Place C1 close to
2. All grounds connect directly to GND plane on PCB.
3. Pins 1 and 16 are no connects, leave floating.
4. Important Note: FM Receiver performance is subject to adherence to antenna design guidelines in “AN350: Si4708/09
5. Pin 2 connects to the antenna interface, refer to “AN350: Si4708/09 Antenna, Schematic, Layout, and Design
6. RFGND should be locally isolated from GND, refer to “AN350: Si4708/09 Antenna, Schematic, Layout, and Design
7. Place Si4708/09 as close as possible to antenna jack and keep the FMI trace as short as possible.
8. V
9. Place R1 on the opposite side of the PCB as the tuner (as close to pin 15 as possible), and route the GPO trace to the
RFGND
Antenna, Schematic, Layout, and Design Guidelines.” Failure to use these guidelines may negatively affect the
performance of the Si4708/09, particularly in weak signal and noisy environments. Silicon Laboratories will evaluate
schematics and layouts for qualified customers.
Guidelines” and "AN383: Si47xx Antenna, Schematic, Layout, and Design Guidelines."
Guidelines.”
system controller on this layer.
A
SCLK
SDIO
RST
SEN
and V
FMI
VIO
1.5 to 3.6 V
D
may be supplied from the same V
Value/Description
Supply bypass capacitor, 22 nF, ±20%, Z5U/X7R
GPO resistor, 1 k
Si4708/09 FM Radio Tuner
V
D
pin.
1
2
3
4
NC
FMIP
RFGND
RST
BAT
Confidential Rev. 1.4
or may be supplied by independent power supplies.
ROUT
RCLK
GND
VD
R1
12
11
10
9
GPO
LOUT
ROUT
Silicon Laboratories
Supplier(s)
Murata
Venkel
C1
RCLK
VBATTERY
2.7 to 5.5 V