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PDF NJU72343 Data sheet ( Hoja de datos )
| Número de pieza | NJU72343 | |
| Descripción | 8-CHANNEL ELECTRONIC VOLUME | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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NJU72343
8-CHANNEL ELECTRONIC VOLUME
■ GENERAL DESCRIPTION
The NJU72343 is a 8-channel electronic volume that controlled
independently. It has a 2-input selector for 4 of 8-channels.
Functions are controlled via two-wired serial bus.
The NJU72343 is well-suited for multi-channel audio systems
such as AV amplifiers, DVD receivers and others.
■ PACKAGE OUTLINE
NJU72343V
■ FEATURES
Operating Voltage
2-wired Serial BUS Control
Selectable 2-Chip Address
Volume
Zero-cross Detection
CMOS Technology
Package Outline
■ BLOCK DIAGRAM
Dual power supply: ±4.5 to ±7.5V
Single power supply: +9.0 to +15.0V
Available for using two chips on same serial bus line
+31.5 to -95dB/0.5dB step, Mute
SSOP32
Ver.2.6E
InA1
InA2
InB1
InB2
InC
InD
InE
InF
InG1
InG2
InH1
InH2
Control Logic
DATA CLOCK
OutA
OutB
OutC
OutD
OutE
OutF
OutG
OutH
-1-
1 page  
■ TEST CIRCUIT
♦IDD/ISS
AREF
1
ADR
2
InA2 3
InB2 4
InA1 5
InB1 6
InC 7
InD 8
InE 9
InF 10
InG1 11
InH1 12
InG2 13
InH2 14
MUTE
15
REF
16
♦THD
AREF
1
ADR
2
InA2 3
InB2 4
InA1
VIN
+
10μF
5
InB1 6
InC 7
InD 8
InE 9
InF 10
InG1 11
InH1 12
InG2 13
InH2 14
MUTE
15
REF
16
NJU72343
Bias
2-wire
Logic
♦VNO
32 V+
A
31 AREF
A
30
V-
29 AREF
28 OutA
27 OutB
26 OutC
25 OutD
24 OutE
23 OutF
22 OutG
21 OutH
20 AREF
19 VDDOUT
1μF
V-
18 CLOCK
17 DATA
AREF
1
ADR
2
InA2 3
InB2 4
InA1 +
5
10μF
InB1 6
InC 7
InD 8
InE 9
InF 10
InG1 11
InH1 12
InG2 13
InH2 14
MUTE
15
REF
16
Bias
2-wire
Logic
32 V+
31 AREF
30
V-
29 AREF
28 +
10μF
RL=47kΩ
27 OutB
OutA
V VOUT
Filter: A-weight
26 OutC
25 OutD
24 OutE
23 OutF
22 OutG
21 OutH
20 AREF
19 VDDOUT
1μF
V-
18 CLOCK
17 DATA
Bias
2-wire
Logic
♦CT/CS
CT Ex) InA1=ON, Input=InA2 -> Measure=OutA
InB1=ON, Input=InB2 -> Measure=OutB
CS Ex) InA1=ON, Input=InB1 -> Measure=OutA
InB1=ON, Input=InA1 -> Measure=OutB
32 V+
AREF
1
31 AREF
ADR
2
30
V-
29 AREF
InA2
VIN
+
10μF
3
InB2 4
28 +
10μF
RL=47kΩ
27 OutB
26 OutC
OutA
V VOUT
Filter
THD:400-30kHz InB1
VIN
InA1 5
+
10μF
6
InC 7
25 OutD
InD 8
24 OutE
InE 9
23 OutF
InF 10
22 OutG
InG1 11
21 OutH
InH1 12
20 AREF
InG2 13
19 VDDOUT
1μF
V-
18 CLOCK
InH2 14
MUTE
15
17 DATA
REF
16
Bias
2-wire
Logic
32 V+
31 AREF
30
V-
29 AREF
28 +
10μF
RL=47kΩ
27 OutB
OutA
V VOUT
Filter: Bandpass
26 OutC
25 OutD
24 OutE
23 OutF
22 OutG
21 OutH
20 AREF
19 VDDOUT
1μF
V-
18 CLOCK
17 DATA
-5-
5 Page 
DEFINITION OF RESISTOR
♦ Volume: +31.5 to -95dB / 0.5dB step. Each volume is controlled independently.
MSB
LSB
Select
Data
Address D7 D6 D5 D4 D3 D2 D1 D0
00H Ach Volume
01H Bch Volume
02H Cch Volume
03H Dch Volume
04H Ech Volume
05H Fch Volume
06H Gch Volume
07H Hch Volume
< Volume Control Data >
Data
D7 D6 D5 D4 D3 D2 D1 D0
00000000
00000001
00000010
00000011
00000100
00000101
00000110
00000111
00001000
Setting
Mute()
+31.5dB
+31.0dB
+30.5dB
+30.0dB
+29.5dB
+29.0dB
+28.5dB
+28.0dB
……
00111000
00111001
00111010
00111011
00111100
00111101
00111110
00111111
01000000
01000001
01000010
01000011
01000100
01000101
01000110
01000111
01001000
…
+4.0dB
+3.5dB
+3.0dB
+2.5dB
+2.0dB
+1.5dB
+1.0dB
+0.5dB
0dB
-0.5dB
-1.0dB
-1.5dB
-2.0dB
-2.5dB
-3.0dB
-3.5dB
-4.0dB
…
11110010
-89.0dB
11110011
-89.5dB
11110100
-90.0dB
11110101
-90.5dB
11110110
-91.0dB
11110111
-91.5dB
11111000
-92.0dB
11111001
-92.5dB
11111010
-93.0dB
11111011
-93.5dB
11111100
-94.0dB
11111101
-94.5dB
11111110
-95.0dB
11111111
Mute
()Initial Setting
NJU72343
- 11 -
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet NJU72343.PDF ] | |
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