YDA143 查看數據表（PDF） - Yamaha Corporation
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YDA143 Datasheet PDF : 22 Pages
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YDA143
●LC Filter
When connecting LC filters to YDA143, make the following LC filter circuit. Use the following constant in accordance
with speaker impedance. By using the following constant, low-pass filter with cutoff frequency=50kHz or so, Q=0.7 or so is
configured.
LC Filter Constant
RL
L1
4Ω
10μH
6Ω
15μH
8Ω
22μH
C1
0.47μF
0.39μF
0.22μF
C2
0.01μF
0.01μF
0.01μF
●Schottky-diode and snubber circuit
YDA143 should connect Schottky-diode and snubber circuit with the output terminal to prevent IC destruction when the
output is short-circuited.
Schottky-diode is connected between each output terminal and PVSS.
The snubber circuit is connected between positive side output terminal and negative side output terminal.
Recommended parts
Schottky-diode: ROHM, RB160M-30
Forward current surge peak = 30A or more, Average forward current = 1A or more,
Forward voltage (IF=1A) = 0.43V or less
Snubber circuit: R=1Ω, C=680pF
Schottky-diode and snubber circuit
10
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