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参数资料
| 型号： | LA7688B |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP52 |
| 封装： | 0.600 INCH, DIP-52 |
| 文件页数： | 18/20页 |
| 文件大小： | 316K |
| 代理商： | LA7688B |
LA7688B
No.0077-7/20
VIF Input Signals and Test Conditions
1. All input signals must be applied to VIF IN shown in the test circuit diagram.
2. The indicated voltage values of the input signals are all measured at VIF IN shown in the test circuit diagram.
3. All switches must be set to OFF unless otherwise specified.
4. All VRs must be set to their center position unless otherwise specified.
5. The input signals and their levels are summarized below.
Input Signals
Waveform
Conditions
SG1
38.9MHz or variable frequency
38.9MHz, 40% or 78% MOD
SG2
38.9MHz, 87.5% VIDEO MOD
10-step waveform (subcarrier : 4.43MHz) standard signal
SG3
34.47MHz
SG4
33.4MHz
SG5
Sweep signal, center frequency = 38.9MHz
SIF Block Input Signal and Test Conditions
1. The SIF block input signal must be applied to SIF IN shown in the test circuit diagram.
2. The indicated voltage value of the input signal is measured at SIF IN shown in the test circuit diagram.
3. All switches must be set to OFF unless otherwise specified.
4. All VRs must be set to their center position unless otherwise specified.
5. The input signals and their levels are summarized below.
Input Signals
Waveform
Conditions
SG1
(SIF IN)
5.5MHz,
f = ±30kHz
5.5MHz, 30% MOD
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