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參數(shù)資料
| 型號： | TDA4655T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | Generic multi-standard decoder |
| 中文描述： | COLOR SIGNAL DECODER, PDSO24 |
| 封裝： | 7.50 MM, PLASTIC, MS-013AD, SOT-137-1, SOP-24 |
| 文件頁數(shù)： | 8/17頁 |
| 文件大?。?/td> | 121K |
| 代理商： | TDA4655T |
June 1993
8
Philips Semiconductors
Preliminary specification
Generic multi-standard decoder
TDA4655
f
g
t
d
S/N
cut-off frequency
chrominance delay time
signal to noise ratio for 100 mV (p-p) input
signal and nominal output voltages
residual carrier at CD outputs:
1
×
subcarrier frequency
(peak-to-peak value)
2
×
subcarrier frequency
(peak-to-peak value)
shift of demodulated f
0
level relative to
blanking level
(B-Y) output
(R-Y) output
Impedance and currents see PAL or NTSC specification
3 dB
400
40
730
500
600
kHz
ns
dB
note 3
V
1,
V
3
10
mV
20
mV
V
3
note 9
0
±
13
mV
V
1
0
±
10
mV
Capacitor for SECAM de-emphasis
(pin 2)
C
2
R
A
R
B
(R
A
/R
B
)
value of external capacitor
value of internal de-emphasis resistors
2.4
4.8
220
2.8
5.6
3.2
6.4
±
5
pF
k
k
%
T
amb
=
+
35
°
C
relative tolerance of de-emphasis resistors
Capacitors for SECAM demodulator control
(pins 4 and 10; note 6)
V
1, 3
shift of demodulated f
0
level due to
external leakage current
C
ext
= 220 nF
0.3
mV/nA
Resistor for SECAM oscillator
(pin 7)
V
7
R
7
C
7
DC voltage
value of external resistor (
±
1%)
value of external capacitor (
±
20%)
2.4
-
2.81
5.62
10
3.2
-
V
k
nF
Chrominance input
(pin 11)
V
11
R
11
C
11
input signal (peak-to-peak value)
input resistance
input capacitance
note 7
20
16
200
20
400
24
10
mV
k
pF
Capacitor for ACC
(pin 12; note 8)
V
1, 3
change of CD output signals during field
blanking due to external leakage current
C
ext
= 100 nF
0.2
%/nA
Hue control (NTSC) and service switch
(pin 13)
φ
phase shift of reference carrier relative to
phase at open-circuit pin 13
V
13
= 3 V
V
13
= open circuit
V
13
= 5 V
pin 13 open circuit
30
5
+
30
3.8
0
4.0
+
5
4.2
°
°
°
V
V
13
internal bias voltage
(proportional to supply voltage)
input resistance
R
13
25
30
35
k
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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