1-31
KD-SX787
Symbol
Description
Pin
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
CH1 input AMP_A reversing input.
CH1 input AMP_A non-reversing input.
CH1 and CH2 power steps power supply.
CH1 output terminal (+)
CH1 output terminal (-)
CH2 output terminal (+)
CH2 output terminal (-)
CH3 output terminal (+)
CH3 output terminal (-)
CH4 output terminal (+)
CH4 output terminal (-)
CH3 and CH4 power steps power supply.
CH4 input terminal
CH4 input terminal (for gain adjustment)
CH3 input terminal
CH3 input terminal (for gain adjustment)
CH2 input terminal
CH2 input terminal(for gain adjustment)
External PNP transistor base connection.
3.3VREG output terminal and external PNP transistor collector connection.
Signal system power supply
Standard voltage impression terminal
Output ON/OFF terminal
CH1 input OP_AMP switch terminal
Signal system GND.
CH1 AMP_B non-reversing input terminal
CH1 AMP_B reversing input terminal
CH1 input terminal and input OP_AMP output terminal.
1 Frame (FR) at the center becomes system GND (P-GND) power.
Please give as the lowest potential with signal system GND (S-GND).
VIN1-A
VIN1+A
VCCP1
VO1+
VO1-
VO2+
VO2-
VO3+
VO3-
VO4+
VO4-
VCCP2
VIN4
VIN4G
VIN3
VIN3G
VIN2
VIN2G
REGIN
3.3VREG
VCCS
VREFIN
MUTE
VIN1_SW
S_GND
VIN1+B
VIN1-B
VIN1
LA6579H
2 Be short-circuited of VCC_S (signal system power supply)
and VCCP1 and VCCP2 (output steps power supply) on the outside.
