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參數(shù)資料
| 型號(hào)： | LA7415 |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 4 CHANNEL, VIDEO AMPLIFIER, PDIP30 |
| 封裝： | SDIP-30 |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大?。?/td> | 199K |
| 代理商： | LA7415 |
H.Sync input: pin 6
If the pin 6 DC voltage is > 1.5 V: Currently the signal is in an
H.Sync period
*: Playback mode: Used for switching timing in SP search.
Record mode: Used as the record amplifier AGC synchronization block gate pulse.
(4) Playback trick mode switching: pin 2
If the pin 2 DC voltage is > 3.0 V: Trick 1
If the pin 2 DC voltage is < 1.0 V: Trick 2
If the pin 2 DC voltage is > 1.0 V and < 3.0 V: Normal
*: Normal mode: Two channels controlled (EP/SP) by pin 4: ON
Envelope comparator: OFF
In trick 1 and 2 modes: All 4 channels: ON
Envelope comparator: ON
*: The difference between trick 1 and trick 2 is that:
Trick1
→
→→SP search is performed in the [HA switch] path.
Trick2
→ SP search is performed in the [HA switch] path. (See the block diagram.)
HA SW (EP/SP mode switching): pin 4
If the pin 4 DC voltage is < 1.6 V: SP mode
If the pin 4 DC voltage is > 1.6 V: EP mode
*: H.Sync synchronization for HA switching:
The switching of the HA SW circuit show in the figure at the right
is synchronized with the H.Sync signal input to pin 6.
(Other EP/SP switching is performed in real time.)
Comp.OUT (pin 3)
If the EP envelope is > SP: High (4.0 V or higher)
If the EP envelope is < SP: Low (0.7 V or lower)
No. 5647-5/12
LA7415
Envelope comparator (pin 3) output
Servo (microcontroller)
or
Pin 4 HA
HA switch
Envelope comparator output
HA switch
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| LA7416 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Playback Amplifier and Record Amplifier for VHS VCRs |
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| LA7425 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:NTSC Format Single-Chip Processing IC for VHS VCR Products |
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