MUSES72320
– 11 –
Ver. 0.6E
NOTES
It is necessary to adjust R
D
to 10k
Ω
for the overcurrent protection.
The input coupling capacitors(C
IN
) and the input resistance(R
IN
=20k
Ω
) form a high-pass filter with the corner frequency
determined in [fc=1/(2
π
R
IN
C
IN
)].
The R
bias
affects the Volume(Att.) linearity characteristic. When R
bias
value is too small, the amount of attenuation increases,
so that the output amplitude becomes small and THD deteriorates by an internal analog switch. On the other hand, when R
bias
is
too large, it may be affected at the noise from the outside. Please decide resistance value after it verifies it enough by an actual
application.
Separate for REF terminals for High and Middle voltage(AC) and REF terminals for Low voltage(AC) in the pattern design.
Pin No. Function Purpose
2 Lch Reference Voltage for Low voltage(AC) signal
4 Lch Reference Voltage for Middle voltage(AC) signal
6 Lch Reference Voltage for High voltage(AC) signal
11 Rch Reference Voltage for High voltage(AC) signal
13 Rch Reference Voltage for Middle voltage(AC) signal
15 Rch Reference Voltage for Low voltage(AC) signal
Table.1 Purpose of Reference Voltage Terminal
