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PDF LA7289 Data sheet ( Hoja de datos )
| Número de pieza | LA7289 | |
| Descripción | VCR Audio Signal Record and Playback Processor | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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Ordering number : EN5642
Monolithic Linear IC
LA7289
VCR Audio Signal Record and Playback Processor
Overview
The LA7289 includes on chip all functions required for
the record and playback of VCR audio signals and
achieves complete adjustment-free operation by the
adoption of an automatic record bias current adjustment
circuit. In addition, the inclusion of a switching circuit for
switching between tuner and line input in addition to the
circuits provided by earlier ICs makes the LA7289 truly
optimal for audio VCR products.
Functions
• Equalizer amplifier
• Ripple filter
• Record/playback switching circuit
• Muting
• SP/LP/EP switching circuit
• Record amplifier
• ALC
• Tape head switching circuit
• Automatic record bias adjustment circuit
• Input switching circuit (line/tuner)
Features
• Adjustment-free record bias current (automatic
adjustment circuit adopted)
• Built-in record bias oscillator circuit power supply
switch
• Record equalizer choke coil no longer required
• Playback amplifier input noise voltage: 1.0 µV rms
• Value of the ALC detector capacitor reduced (to 3.3 µF)
• Built-in high-voltage head switching circuit
• Supply voltage: supports both 9 and 12-V operation
• Built-in input switching circuit (for the line and tuner
inputs)
Package Dimensions
unit: mm
3067-DIP24S
[LA7289]
SANYO: DIP24S
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Pin 2 input voltage
Pin 2 input current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
VIN2
IIN2
Pd max
Topr
Tstg
DC
Ta ≤ 65 °C
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Allowable operating voltage range
Symbol
VCC
VCCop
Conditions
Conditions
Ratings
14
±45
±1.5
500
–10 to +65
–55 to +150
Unit
V
Vp-p
mA
mW
°C
°C
Ratings
9, 12
8.5 to 12.5
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(OT) No. 5642-1/11
1 page  
LA7289
Application circuit 1 (Series erase head type)
No. 5642-5/11
5 Page 
LA7289
s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
s Anyone purchasing any products described or contained herein for an above-mentioned use shall:
Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of April, 1997. Specifications and information herein are subject to change
without notice.
No. 5642-11/11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet LA7289.PDF ] | |
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