NJW1201A

– 20 –

APPLICATION NOTE

[1] Input Selector

(1-1) Single ended stereo Inputs

All single ended inputs (pin.2,3,4,36,37,38,40,42,44,47,50,52) have an input impedance of 50

kΩ.

(1-2) Differential Input

In6A(pin.47)/In6B(pin.44) can use as single-ended input or differential input.

In case of differential input, In6A/In6B are positive input have an input impedance of 50k

Ω.

And In6diff(pin.46) is negative input terminal has an input impedance of 50kΩ.

To improve CMRR at input, please connect the same value of coupling capacitor to In6A/In6B/In6diff.

[2] Monitor out(pin.5,35), Rec out(pin6,34), VOLIn(pin.7,33)

Hi-path filter (Sallen-Key) can be made up with these terminals.

2

1

2

1

0

2

1

C

C

R

R

f

π

=

2

1

2

1

2

2

1

2

1

C

C

R

R

R

C

C

C

C

Q

+

=

C1

C2

R1

MonitorOut(PIN:5,35)

VOLIn(PIN:7,33)

RecOut(PIN:6,34)