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LA7289 Datasheet(PDF) 7 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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No. 5642-7/11
LA7289
Block Diagram
Pin No.
Function
Function description
Internal circuit
1
Record bias automatic control output
EE, playback
→ VCC
Record
→ Control voltage
2
Head switch (high voltage)
Playback
→ On
Record, EE
→ Off
On resistance
→ 10 Ω (typical)
Withstand voltage when off
→ ±45 V (f = 70 kHz)
3
GND
Ground used for the pin 2 head
switching circuit and the EQ amplifier.
4
EQ amplifier input
Inputs the playback from the head
with an input impedance of
120 k
Ω (typical).
Pin Functions
Continued on the next page.
A06818
A06819




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