Marantz SR6010 Service Manual page 194

The NJU72751 is a 4-input / 4-output dual analog switch.
NJU72751
Functions are controlled via two-wired serial bus. A-channel
switches and B-channel switches are controlled independently.
The NJU72751 is well-suited for multi-channel audio systems
such as AV amplifiers, DVD receivers and others.
NJU72751V (INPUT : IC871)
PIN CONFIGURATION
FEATURES
Operating Voltage
2-wired Serial BUS Control
Selectable 2-Chip Address
ON Resistance
Low Distortion
CMOS Technology
Package Outline
BLOCK DIAGRAM
Block Diagram
No. Symbol
1 V+
2 ADR0
3 InA1
4 InB1
5 NC
6 InA2
7 InB2
8 NC
9 NC
10 InA3
11 InB3
12 NC
13 InA4
14 InB4
15 REF
16 DATA
Pin Assignment
No. Symbol
1 V+ Power supply (+)
2 ADR0 Chip address setting terminal 0
3 InA1 Ach Input terminal 1
4 InB1 Bch Input terminal 1
5 NC No connect
6 InA2 Ach Input terminal 2
7 InB2 Bch Input terminal 2
8 NC No connect
9 NC No connect
10 InA3 Ach Input terminal 3
11 InB3 Bch Input terminal 3
- 2 -
12 NC No connect
Ver.1.8E
13 InA4 Ach Input terminal 4
14 InB4 Bch Input terminal 4
15 REF Digital block reference voltage terminal
16 DATA Control data signal Input terminal
32
±4.5 to ±7.5V
Available for using four chips on same serial bus line
15 typ.
0.0004% typ. (V
IN
SSOP32
1
Function
Power supply (+)
Chip address setting terminal 0
Ach Input terminal 1
InA1
Bch Input terminal 1
No connect
InA2
Ach Input terminal 2
InA3
Bch Input terminal 2
No connect
InA4
No connect
Ach Input terminal 3
InB1
Bch Input terminal 3
InB2
No connect
Ach Input terminal 4
InB3
Bch Input terminal 4
Digital block reference voltage terminal
InB4
Control data signal Input terminal
Function
194
17
=1Vrms)
16
Symbol
17 CLOCK
18 NC
19 OutB4
OutA1
20 OutA4
21 NC
OutA2
22 OutB3
OutA3
23 OutA3
24 REF_B
OutA4
25 REF_A
26 OutB2
OutB1
27 OutA2
OutB2
28 NC
29 OutB1
OutB3
30 OutA1
31 ADR1
OutB4
32 V-
No Symbol
17 CLOCK Clock signal Input terminal
18 NC No connect
19 OutB4 Bch Output terminal 4
20 OutA4 Ach Output terminal 4
21 NC No connect
22 OutB3 Bch Output terminal 3
23 OutA3 Ach Output terminal 3
24 REF_B Bch Reference Voltage terminal
25 REF_A Ach Reference Voltage terminal
26 OutB2 Bch Output terminal 2
27 OutA2 Ach Output terminal 2
28 NC No connect
29 OutB1 Bch Output terminal 1
30 OutA1 Ach Output terminal 1
31 ADR1 Chip address setting terminal 1
32 V- Power supply (-)
NJU72751V
Function
Clock signal Input terminal
No connect
Bch Output terminal 4
Ach Output terminal 4
No connect
Bch Output terminal 3
Ach Output terminal 3
Bch Reference Voltage terminal
Ach Reference Voltage terminal
Bch Output terminal 2
Ach Output terminal 2
No connect
Bch Output terminal 1
Ach Output terminal 1
Chip address setting terminal 1
Power supply (-)
Function
- 1 -