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LA7289 Datasheet(PDF) 1 Page - Sanyo Semicon Device

Part No. LA7289
Description  VCR Audio Signal Record and Playback Processor
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Maker  SANYO [Sanyo Semicon Device]
Homepage  http://www.ssdc-jp.com/eng/
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Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
14
V
Pin 2 input voltage
VIN2DC
±45
Vp-p
Pin 2 input current
IIN2
±1.5
mA
Allowable power dissipation
Pd max
Ta
≤ 65 °C
500
mW
Operating temperature
Topr
–10 to +65
°C
Storage temperature
Tstg
–55 to +150
°C
Ordering number : EN5642
43097HA(OT) No. 5642-1/11
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
SANYO: DIP24S
[LA7289]
LA7289
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
VCR Audio Signal Record and Playback Processor
Monolithic Linear IC
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
9, 12
V
Allowable operating voltage range
VCCop
8.5 to 12.5
V
Operating Conditions at Ta = 25°C




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