5/11
28
27
26
25
24
23
22
ch4
ch3
REV OUTF
FWD OUTR
16k
10k
10k
16k
16k
10k
10k
16k
21
20
19
18
17
16
15
ch3
ch4
MUTE
-
+
LEVEL SHIFT
-
+
LEVEL SHIFT
LEVEL SHIFT
-+
LEVEL SHIFT
-+
LD
ch1
ch2
1
2
3
4
5
6
7
ch2
ch1
8
9
10
11
12
13
14
fig.3 BLOCK DIAGRAM
resister unit [ Ω ]
● Pin description
No
Symbol
Function
No
Symbol
Function
1
FWD
Input for loading forward
15
VO4(+) Non inverted output of CH4
2
LDCTL
Loading driver output voltage control 16
terminal
VO4(-) Inverted output of CH4
3
TEST TEST
17
VO3(+) Non inverted output of CH3
4
IN1
Input of CH1
18
VO3(-) Inverted output of CH3
5
TEST
TEST
19
GND
Substrate ground
6
TEST
TEST
20
BIAS
Input for Bias-amplifier
7
IN2
Input of CH2
21
MUTE Input for mute control
8
VCC
VCC
22
OPOUT3 Output of CH3 OP-AMP
9
VOL(-) Inverted output of loading
10
VOL(+) Non inverted output of loading
11
VO2(-) Inverted output of CH2
23
OPIN3(-) Inverting input of CH3 OP-AMP
24
OPIN3(+)
Non inverting input of CH3
OP-AMP
25
OPOUT4 Output of CH4 OP-AMP
12
VO2(+) Non inverted output of CH2
26
OPIN4(-) Inverting input of CH4 OP-AMP
13
VO1(-) Inverted output of CH1
27
OPIN4(+) Non inverting input of CH4 OP-AMP
14
VO1(+) Non inverted output of CH1
28
REV
Input for loading reverse
notes) Symbol of + and - (output of drivers) means polarity to input pin.
(For example if voltage of pin4 high, pin14 is high)
REV. A