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參數(shù)資料
| 型號： | TDA9847T-T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO24 |
| 文件頁數(shù)： | 4/28頁 |
| 文件大小： | 146K |
| 代理商： | TDA9847T-T |
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1995 May 23
12
Philips Semiconductors
Preliminary specication
TV and VTR stereo/dual sound processor
with digital identication
TDA9847
fpil
pilot PLL pull-in frequency
range (referenced to
fpil = 54.6875 kHz)
fosc = 9.988 MHz
lower side
405
Hz
upper side
192
192
Hz
fosc = 10.008 MHz
lower side
296
Hz
upper side
302
302
Hz
fosc = 10.028 MHz
lower side
188
Hz
upper side
411
411
Hz
tpil
pilot PLL pull-in time
0
1.7
ms
fLP
low-pass frequency response
3 dB
450
600
750
Hz
R5
low-pass output resistance
18.75
25
31.25
k
V5(rms)
identication threshold voltage
(RMS value)
70
mV
QL
loaded quality factor of
resonance circuit
high sensitivity;
see Fig.1
40
50
loaded quality factor of
resonance circuit with xed
coil
sensitivity loss
2 to 3 dB; see Fig.2
12
tacqui AGC
AGC acquisition time
Vi pil(rms) switched from
0 to 100 mV (RMS
value)
0.1
s
Identication (internal functions)
Vi tuner
identication voltage sensitivity note 4
28
dB
V
C/N
pilot carrier-to-noise ratio for
start of identication
note 5
33
-
dB/Hz
H
hysteresis
note 4
2dB
fdet
pull-in frequency range of
identication PLL (referred to
fdet stereo = 117.48 Hz and
fdet dual = 274.12 Hz)
lower side
stereo
0.63
Hz
dual
0.69
Hz
upper side
stereo
0.63
0.63
Hz
dual
0.69
0.69
Hz
tdet
pull-in time of identication
PLL (referenced to
fdet stereo = 117.48 Hz and
fdet dual = 274.12 Hz)
stereo
0
0.8
s
dual
0
0.8
s
fident
identication window
frequency width (referred to
fdet stereo = 117.48 Hz and
fdet dual = 274.12 Hz)
stereo; note 6
2.2
2.2
Hz
dual; note 6
2.3
2.3
Hz
tintegr
integrator time constant
0.94
0.94
s
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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