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PDF DX5767 Data sheet ( Hoja de datos )
| Número de pieza | DX5767 | |
| Descripción | Broadcast FM Radio Receiver | |
| Fabricantes | ETC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de DX5767 (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
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Broadcast FM Radio Receiver DX5767
Doc. Version
Date
1.0
Product：Broadcast FM Radio Receiver
Page : 24
DX5767 Datasheet
1
1 page  
Broadcast FM Radio Receiver DX5767
Out-band Input IP3
(IIP3OUTBAND)
Δf = 1MHz;
fTUNE =70~108MHz
90 92 ---
dBuV
EMF
VRF=60dBuV
AM Suppression(AMSP)
FM： fDEV=22.5kHz; fMOD=1kHz;
AM： m=0.3; fMOD=1kHz;
BAF=200Hz ~15kHz;MONO=ON
50
52 ---
dB
Adjacent Channel Selectivity
(ACS200)
Δf=±200kHz; fTUNE =70~108MHz
SINAD>26dB
39
42 ---
dB
Alternate Channel Selectivity Δf=±400kHz; fTUNE =70~108MHz 40 50 ---
(ACS400)
SINAD>26dB
dB
Spurious Response
Rejection
Δf>±1MHz；fTUNE =70~108MHz
60 --- ---
SINAD>26dB
dB
Audio Output Voltage5
VRF=60dBuV;
fTUNE=70~108MHz fDEV =22.5kHz;
--- 110
fMOD =1kHz; BAF=200Hz ~15kHz;
MONO=ON; MAX. Volume
Audio Output L/R Imbalance
VRF=60dBuV;
fTUNE=70~108MHz;fDEV =22.5kHz;
--- 0.1
fMOD=1kHz;BAF=200Hz ~15kHz;
Audio Stereo Separation
VRF=60dBuV;
fTUNE = 70~108MHz; fDEV = 30%;
fMOD=1kHz; L=1;R=0; Pilot 10%
34 35 ---
BAF=200Hz ~15kHz;
--- mV RMS
--- dB
dB
Audio Mono SINAD 6
VRF=60dBuV;
fTUNE = 70~108MHz; fDEV =75kHz; --- 62
fMOD =1kHz; BAF=200Hz ~15kHz;
--- dB
MONO=ON
Audio Stereo SINAD6
VRF=60dBuV;
fTUNE = 70~108MHz; fDEV =75kHz;
--- 62
fMOD =1kHz; BAF=200Hz ~15kHz;
--- dB
Stereo=ON
Audio THD
VRF=60dBuV;
fTUNE = 70~108MHz; fDEV =75kHz;
fMOD =1kHz; BAF=200Hz ~15kHz;
MONO=ON
--- 0.07 0.1
%
De-emphasis Time Constant
DE=0
DE=1
--- 75
--- 50
---
---
us
Confidential and Proprietary
5
5 Page 
Broadcast FM Radio Receiver DX5767
B a s s b o o s t p e rfo rm a n c e (F s = 3 8 K
hz)
8
6
4
2
0
-2
1 0- 11 001 011 021 03
F re q u e n c y [ H z ]
Figure 5. Bass Boost Filter
1 04
1 05
4.4 Tuning and Seeking
Tuning needs only to update bits CHAN[9:0], then trigger it by bit Tune rising edge
(from 0 to 1). The whole process requires approximately 50mS. After tuning process is completed,
three values are given in read-only registers: 8-bit RSSI for signal strength, 6-bit ENVELOP_NUM for
signal-to-noise ratio and 8-bit FD_NUM for frequency deviation. These values are in format of two’s
complement. The suggested criteria of radio station are
(RSSI≥176)&(ENVELOP_NUM≤38)&(Abs(FD_NUM)≤14).
Hardware seeking function is integrated within DX5767 with less than 10 second to find a radio
station. The trigger condition is control bit SEEK rising edge, i.e. bit SEEK from 0 to 1. When seeking
is completed, bit STC will be sent to as 1, and the chip is tuned to new radio station frequency, if
there is no station, it returns to starting frequency. STC value can be tracked to read the register
through I2C. Control bit SF is the indicator of radio station, if SF=0, the current stop is a radio station,
if SF=1, STC=1, it means there is no station across FM radio frequency band. Radio station
frequency can be acquired from control bit READCHAN[9:0] and the tuning frequency is defined as
Frequency (MHz) = 50 kHz * READCHAN[9:0] + 70MHz
READCHAN[9:0] is 0 for 70MHz.
Seeking can be triggered again with bit SEEK rising edge to find the next radio station after it is
completed.
Confidential and Proprietary
11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet DX5767.PDF ] | |
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