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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)： | 9/17頁 |
| 文件大?。?/td> | 121K |
| 代理商： | TDA4657 |
June 1993
9
Philips Semiconductors
Preliminary specification
Generic multi-standard decoder
TDA4657
Hue control (NTSC) and service switch
(pin 11)
φ
phase shift of reference carrier
relative to phase at open-circuit pin 11
V
11
= 3 V
V
11
= open-circuit
V
11
= 5 V
pin 11 open-circuit
30
5
+
30
3.8
0
4.0
+
5
4.2
degree
degree
degree
V
V
11
internal bias voltage
(proportional to supply voltage)
input resistance
R
11
25
30
35
k
Capacitor for identification
(pins 12 and 13)
V
12
, V
13
DC voltage for an identified signal
DC voltage for an unidentified signal
2.8
1.5
3.2
2.0
3.5
2.3
V
V
PLL oscillator
measured with nominal crystal (pin 14; see Table 1)
R
14
C
14
f
L
initial oscillator amplifier input resistance
oscillator amplifier input capacitance
lock-in-range referenced to
4.43361875 MHz
phase difference for
±
400 Hz deviation of
colour carrier frequency
500
±
400
10
±
1300
pF
Hz
note 9
φ
1
degree
2 x f
sc
output
(pin 16; if the output is not used, the pin should be connected to supply)
V
16
R
16
I
16
V
16
DC output level
output resistance
output current
output signal (peak-to-peak value)
I
16
= 0 A
I
16
= 0 A
6.1
6.3
250
6.5
350
1.0
V
mA
mV
Standard setting inputs/outputs
(pins 17 to 19; note 10)
used as output: npn emitter follower output with 0.1 mA source to ground
V
O
on-state, during scanning, colour OFF
on-state, colour ON
R
O
output resistance
I
O
output current
used as input: forced system switching
V
O
threshold for system ON
I
O
input current
2.3
5.8
2.5
6.0
2.7
6.2
300
3
V
V
mA
I
O
= 0
6.8
100
7.0
150
7.2
180
V
μ
A
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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