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PDF LA7415 Data sheet ( Hoja de datos )
| Número de pieza | LA7415 | |
| Descripción | VHS VCR Playback Head and Record Amplifiers | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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No. 5647
Monolithic Linear IC
LA7415
VHS VCR Playback Head and Record Amplifiers
Overview
The LA7415 is a record and playback amplifier IC for
VHS format VCR decks. In combination with a Sanyo
LC7420 or LA7430 Series video signal processing IC, the
LA7415 can provide an adjustment-free Y/C record
current.
Features
• Record amplifier: Provides stable recording
characteristics using a fixed-current drive technique that
is resistant to load variations.
• REC-AMP: Includes a built-in AGC circuit.
• Can use the same printed circuit board as the LA7411.
Package Dimension
unit: mm
3061-DIP30S
[LA7415]
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Maximum supply voltage
Allowable power dissipation
VCC max
Pd max
Operating temperature
Topr
Storage temperature
Tstg
Operating Conditions at Ta = 25°C
Ta ≤ 65 °C
Parameter
Supply voltage
Operating voltage range
Symbol
VCC
VCCop
Conditions
Conditions
SANYO: DIP30S
Ratings
7.0
650
–10 to +65
–40 to +150
Unit
V
W
°C
°C
Ratings
5.0
4.8 to 5.5
Unit
V
V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
43097HA(OA) No. 5647-1/12
1 page  
H.Sync input: pin 6
LA7415
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:
or
Trick1 Envelope comparator (pin 3) output → Servo (microcontroller)
→ Pin 4 HA →SP search is performed in the [HA switch] path.
Trick2 Envelope comparator output → 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
5 Page 
Test Circuit
LA7415
No. 5647-11/12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LA7415.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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| LA7416 | Playback Amplifier and Record Amplifier for VHS VCRs | Sanyo |
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