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參數(shù)資料
| 型號： | TDA4657 |
| 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, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, SOT-146-1, DIP-20 |
| 文件頁數(shù)： | 7/17頁 |
| 文件大?。?/td> | 121K |
| 代理商： | TDA4657 |
June 1993
7
Philips Semiconductors
Preliminary specification
Generic multi-standard decoder
TDA4657
CHARACTERISTICS
Measured with application circuit (Fig.4) at T
amb
= +25
°
C, 8 V supply, 75% colour bar chrominance input signal of
200 mV (peak-to-peak value) and nominal phase for NTSC unless otherwise specified. All voltages measured
referenced to ground.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
I
supply voltage
supply current
7.2
25
8.0
31
8.8
37
V
mA
V
P
= 8.0 V without
load
V
P
= 8.0 V without
load
P
tot
total power dissipation
248
296
mW
CD signals outputs
(pins 1 and 3)
PAL or NTSC
V
1
colour difference output signals
(R
Y) output PAL and NTSC 4.43 MHz
(peak-to-peak value)
(B
Y) output PAL and NTSC 4.43 MHz
(peak-to-peak value)
ratio of CD signal amplitudes
V(R
Y)/V(B
Y)
signal linearity
(R
Y) output
signal linearity
(B
Y) output
cut-off frequency (both outputs)
chrominance delay time
signal to noise ratio for nominal output
voltages
residual carrier at CD outputs
1
×
subcarrier frequency
(peak-to-peak value)
2
×
subcarrier frequency
(peak-to-peak value)
H/2 content at R
Y output at nominal input
signal (peak-to-peak value)
crosstalk between CD Channels
output resistance (npn emitter follower)
output current
independent of supply voltage; note 1
442
525
624
mV
V
3
559
665
791
mV
V
1
/V
3
note 2
0.75
0.79
0.83
m
V
1
= 0.8 V (p-p)
V
3
= 1.0 V (p-p)
3 dB
0.8
0.8
220
40
1
270
320
MHz
ns
dB
f
g
t
d
S/N
note 3
V
1
, V
3
10
mV
30
mV
10
mV
A
R
1
, R
3
I
1
, I
3
40
200
3
dB
mA
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