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RDA5807P 데이터시트 PDF




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부품번호 RDA5807P 기능
기능 SINGLE-CHIP BROADCAST FM RADIO TUNER
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RDA5807P 데이터시트, 핀배열, 회로
RDA5807P
SINGLE-CHIP BROADCAST FM RADIO TUNER
Rev.1.0–Aug.2008
1 General Description
The RDA5807P is a single-chip broadcast FM
stereo radio tuner with fully integrated synthesizer,
IF selectivity and MPX decoder. The tuner uses
the CMOS process, support multi-interface and
require the least external component. The
package size is 4X4mm2 and is completely
adjustment-free. All these make it very suitable for
portable devices.
The RDA5807P has a powerful low-IF digital
audio processor, this make it have optimum sound
quality with varying reception conditions.
The RDA5807P can be tuned to the worldwide
frequency band.
The RDA5807P is pin-to-pin compatible to
RDA5800,RDA5800C and RDA5802.
Figure 1-1. RDA5807P Top View
1.1 Features
z CMOS single-chip fully-integrated FM tuner
z Low power consumption
¾ Total current consumption lower than 17.5mA
at 3.3V power supply
z Support worldwide frequency band
¾ 76 -108 MHz
z Digital low-IF tuner
¾ Image-reject down-converter
¾ High performance A/D converter
¾ IF selectivity performed internally
z Fully integrated digital frequency synthesizer
¾ Fully integrated on-chip RF and IF VCO
¾ Fully integrated on-chip loop filter
z Autonomous search tuning
z Support crystal oscillator
z 32.768 KHz 12M,24M,13M,26M,19.2M,38.4MHz
Reference clock
z 2-wire and 3-wire serial control bus interface
z Digital auto gain control (AGC)
¾ Mono/stereo switch
¾ Soft mute
¾ High cut
z Signal dependent mono to stereo blend [Stereo
Noise Cancelling (SNC)]
z Adjustment-free stereo decoder
z Autonomous search tuning function
z Bass boost
z Standby mode
z Programmable de-emphasis (50/75 μs)
z Directly support 32resistance loading
z Integrated LDO regulator
¾ 2.7 to 5.5 V operation voltage
z 4X4mm 24 pin QFN package
Copyright © RDA Microelectronics Inc. 2008. All rights are reserved.
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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RDA5807P pdf, 반도체, 판매, 대치품
RDA Microelectronics, Inc.
3 Functional Description
RDA5807P FM Tuner V1.0
LNAN C1
LNAP
C2
LNA
+
-
Limiter
0/90
I
PGA
Q
PGA
I
ADC
Q
ADC
Audio
DSP
Core
digital filter
MPX
decoder
stereo/mono
audio
L
DAC
LOUT
R
DAC
ROUT
32.768 KHz
RCLK
Synthesizer
VCO
2.7-5.5 DVVDD
AVDD LDO
RDA5807P
RSSI
GPIO
Interface
Bus
GPIO
RST
SEN MCU
SCLK
SDIO
VIO
Figure 3-1. RDA5807P FM Tuner Block Diagram
3.1 FM Receiver
The receiver uses a digital low-IF architecture that
avoids the difficulties associated with direct
conversion while delivering lower solution cost
and reduces complexity, and integrates a low
noise amplifier (LNA) supporting the FM
broadcast band (76 to 108MHz), a quadrature
image-reject mixer, a programmable gain control
(PGA), a high resolution analog-to-digital
converters (ADCs), an audio DSP and a high-
fidelity digital-to-analog converters (DACs).
The LNA has differential input ports (LNAP and
LNAN). The LNA default input resistance is 150
Ohm under single or dual input mode. It default
input common mode voltage is GND.
The limiter prevents overloading and limits the
amount of intermodulation products created by
strong adjacent channels.
The quadrature mixer down converts the LNA
output differential RF signal to low-IF, it also has
image-reject function.
The PGA amplifies the mixer output IF signal and
then digitized with ADCs.
The DSP core finishes the channel selection, FM
demodulation, stereo MPX decoder and output
audio signal. The MPX decoder can autonomous
switch from stereo to mono to limit the output
noise.
The DACs convert digital audio signal to analog
and change the volume at same time. The DACs
has low-pass feature and -3dB frequency is about
30 KHz.
3.2 Synthesizer
The frequency synthesizer generates the local
oscillator signal which divide to quadrature, then
be used to down convert the RF input to a
constant low intermediate frequency (IF). The
synthesizer reference clock is 32.768 KHz,12M,
24M, 13M, 26M, 19.2M, 38.4MHz. select by CLK MODE[2:0]
BIT.
3.3 Power Supply
The RDA5807P integrated one LDO which
supplies power to the chip. The external supply
voltage range is 2.7-5.5 V.
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.
Page 3 of 20
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RDA5807P 전자부품, 판매, 대치품
RDA Microelectronics, Inc.
RDA5807P FM Tuner V1.0
5 Receiver Characteristics
Table 5-1 Receiver Characteristics
(VDD = 2.7 to 5.5 V, TA = -25 to 85 °C, unless otherwise specified)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
General specifications
BAND=0
87
Fin
FM Input Frequency
BAND=1
76
108
91
Vrf
Rin
Cin
IP3in
αam
S200
Sensitivity1,2,3
LNA Input Resistance 7
LNA Input Capacitance 7
Input IP34
AM Suppression1,2
Adjacent Channel Selectivity
(S+N)/N=26dB
AGCD=1
m=0.3
±200KHz
1.5
150
24
80
40 -
45
2
6
-
-
-
Left and Right Audio
VAFL; VAFR
Frequency Output Voltage Volume_dac[3:0] =1111
110
(Pins LOUT and ROUT)
(S+N)/N
αSCS
THD
αAOI
RL
Maximum Signal Plus Noise
to Noise Ratio1,2,3,5
Stereo Channel Separation
Audio Total Harmonic
Distortion1,3,6
Audio Output L/R Imbalance
Audio Output Loading
Resistance
Single-ended
54 60
-
35 -
-
0.3 0.5
1
32 -
-
Pins LNAN, LNAP, LOUT, ROUT and NC(22,23)
Vcom_rfin
Pins LNAN and LNAP Input
Common Mode Voltage
Float
Vcom
Audio Output Common
Mode Voltage8
1.2 1.25 1.3
Vcom_nc
Pins NC (22, 23) Common
Mode Voltage
0.45 0.5
0.55
! The NC(22, 23) pins SHOULD BE left floating.
Notes:
1. Fin=76 to 108MHz; Fmod=1KHz; de-emphasis=75μs; MONO=1; L=R unless noted otherwise;
2. Δf=22.5KHz;
3. BAF = 300Hz to 15KHz, RBW <=10Hz;
4. |f2-f1|>1MHz, f0=2xf1-f2, AGC disable, Fin=76 to 108MHz;
5. PRF=60dBUV;
6. Δf=75KHz.
7. Measured at VEMF = 1 m V, f RF = 76 to 108MHz
8. At LOUT and ROUT pins
UNIT
MHz
MHz
μV EMF
Ω
pF
dBμV
dB
dB
mV
dB
dB
%
dB
Ω
V
V
V
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.
Page 6 of 20
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