RDA Microelectronics, Inc.
RDA5807SP FM Tuner V1.0
8.2 Audio Loading Resistance Larger than 32Ω & DCXO Application:
Notes:
1. J1: Common 32Ω Resistance
Headphone;
2. U1: RDA5807SP Chip;
3. U2: 32.768KHz Crystal oscillator
4. V1: Analog and Digital Power
Supply (2.7~5.5V);
5. FM Choke (L3 and C3) for Audio
Common and LNA Input
Common;
6. Pins NC(22, 23) Should be
Leaved Floating;
7.Set MODE to select control
interface(GND—I2C,VIO—SPI);
8. Place C2 Close to AVDD pin.
Figure 8-2. RDA5807SP FM Tuner Application Diagram (DCXO Application)
8.2.1 Bill of Materials:
COMPONENT
U1
VALUE
RDA5807SP
DCXO
DESCRIPTION
Broadcast FM Radio Tuner
Crystal oscillator 32.768KHz
Common 32Ω Resistance Headphone
LC Chock for LNA Input
SUPPLIER
RDA
U2
<=50PPM
J1
L3/C3
C4,C5
C2
100nH/24pF
125µF
Murata
Murata
Murata
Murata
Audio AC Couple Capacitors
Power Supply Bypass Capacitor
FM Band Ferrite
24nF
F1/F2
1.5K@100MHz
The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in whole or in
part without prior written permission of RDA.
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