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參數(shù)資料
| 型號： | LA76818A |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP54 |
| 封裝： | 0.600 INCH, DIP-54 |
| 文件頁數(shù)： | 44/44頁 |
| 文件大小： | 289K |
| 代理商： | LA76818A |
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LA76818A
No.8047-9/44
Test Conditions Ta = 25
°C, VCC = V8 = V31 = V43 = 5.0V, l18 = 19mA, ICC = l25 = 27mA
Circuit Voltage, Current
Parameter
Symbol
Test point
Input signal
Test method
Bus conditions
Horizontal supply voltage
V25
25
No signal
Apply a current of 27mA to pin 25 and
measure the voltage at pin 25.
Initial
RGB supply voltage
V18
18
No signal
Apply a current of 19mA to pin 18 and
measure the voltage at pin 18.
Initial
IF supply current
I8
(CDDICC)
8
No signal
Apply a voltage of 5.0V to pin 8 and measure
the incoming DC current [mA].
(IF AGC 2.5V applied)
Initial
CCD supply current
I31
31
No signal
Apply a voltage of 5.0V to pin 31 and
measure the incoming DC current [mA).
Initial
Video/vertical supply current
I43
43
No signal
Apply a voltage of 5.0V to pin 43 and
measure the incoming DC current [mA].
Initial
VIF Block Input Signals and Test Conditions
1. Input signals must all be input to the PIF IN (pin 6) in the Test Circuit.
2. All input signal voltage values are the levels at the VIF IN (pin 6) in the Test Circuit.
3. Signal contents and signal levels
4. Bus control condition: VIF SYS = "01", S.TRAP.SW = "1", OVER.MOD.SW = "0"
Input signal
Waveform
Conditions
SG1
CW
38.9MHz
SG2
CW
34.47MHz
SG3
CW
33.4MHz
SG4
CW
Frequency variable
SG5
38.9MHz
87.5% Video Mod.
10-stairstep wave
(Subcarrier: 4.43MHz)
SG6
38.9MHz
fm = 15kHz, AM = 78%
SG7
38.9MHz, 80dB
87.5% Video Mod.
50IRE Luma
(Carrier: variable)
50IRE
50IRE Luma
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