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Pin No.
Pin name
37 POWER MUTE SW
41 Low Boost SW
Pin voltage
[V]
LA4587M
Unit (resistance: Ω, capacitance: F)
Internal equivalent circuit
Remarks
c When pin 37 is grounded,
mute is on.
c When pin 41 is floating, low
boost is on.
38 POWER SW
c Power on when grounded.
39 FWD/REV SW
40 METAL SW
44 R.F REF
1.13
46 R.F BASE
0.5
c When pin 39 is floating: FWD
mode; when grounded: REV
mode.
c When pin 40 is in FL mode:
metal on.
c RF is referenced hereto. An
external capacitor can be
used to vary RF SVRR.
c Used for external PNP
transistor base drive.
No.5204-8/18