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PDF NJU72340A Data sheet ( Hoja de datos )
| Número de pieza | NJU72340A | |
| Descripción | 8-CHANNEL ELECTRONIC VOLUME | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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NJU72340A
8-CHANNEL ELECTRONIC VOLUME WITH INPUT SELECTOR
GENERAL DESCRIPTION
The NJU72340A is a 8-channel electronic volume with
Input Selector. It includes 8-in 2-out audio selector, REC
Output and Multi-channel inputs.
The NJU72340A performs low noise and low distortion
characteristics with resistance ladder circuit.
All of functions are controlled via two-wired serial bus.
The NJU72340A is suitable for multi-channel audio
system, such as AV amplifier, DVD receiver, and others.
PACKAGE OUTLINE
NJU72340AFH3
FEATURES
Operating Voltage
2-Wired Serial Control
8-input 2-output selector
Multi-Channel input (8ch x 1)
Input Selector Gain Control
Volume
CMOS Technology
Package Outline
±4.5 to ±7.5V
stereo : 7-input, monaural : 1-input
*LBch x2, RBch x2
Gain : 0,-5,-6,-7,-9,-11,-12,-13dB
+31.5 ~ -95dB/0.5dBstep, MUTE
LQFP52-H3
BLOCK DIAGRAM
Stereo Lin
(×7)
Mono in
(×1)
Stereo Rin
(×7)
Control Logic
DataClock
Multi-Cin
REC _L
Multi-LSin
Lout for ADC
Multi-LBin
Multi-Lin
Input Selector Gain:
0,-5,-6,-7,-9,-11,-12,-13dB
Multi-Rin Multi-RBin
Rout
for ADC
REC _R
Multi-RSin
Multi-SW in
Main Volume:
+31.5 to -95dB/0.5dB step
Cout
LSout
LBout
Lout
Rout
RBout
RBout
SWout
Ver 2.4E
–1–
1 page  
APPLICATION CIRCUIT
NJU72340A
LOUT
C1 +
10μF 1
ROUT
C2
+
10μF
2
COUT
C3
+
10μF
3
LSOUT
C4
+
10μF
4
RSOUT
C5
+
10μF
5
LBOUT
C6
+
10μF
6
RBOUT
C7
+
10μF
7
SW OUT
C8
+
10μF
8
DCAP_1
DCAP_2
C9 +
9
100μF
C10 +
10
100μF
GND
11
DATA
JP1
12
CLOCK
JP2
13
++
+
++++++++
+
52 51 50 49 48 47 46 45 44 43 42 41 40
Rch Selecotr 2
Rch Selecotr 1
Lch Selecotr 2
Lch Selecotr 1
14 15 16 17 18 19 20 21 22 23 24 25 26
+++
+++++++++
C35
39 +
10μF
C34
38 +
10μF
ADC_L
ADC_R
37
C33
+
100μF
DCAP_6
C32
36 +
10μF
MONOIN
35
C31
+
100μF
DCAP_5
C30
34 +
10μF
L7IN
33
C29
+
10μF
R7IN
32
C28
+
10μF
L6IN
31
C27
+
10μF
R6IN
30
C26
+
10μF
L5IN
29
C25
+
10μF
R5IN
28
C24
+
10μF
L4IN
27
C23
+
10μF
R4IN
Note.) When switching REC(REC Output) and REC Selector, use MUTE for REC_L pin and REC_R pin on the set. When switching Input Gain
and Input Selector, use MUTE for ADC_L pin and ADC_R pin on the set.
–5–
5 Page 
Lch Selector
Rch Selector
LBch Selector
RBch Selector
: Lch Multi-Channel Selector Data
: Rch Multi-Channel Selector Data
: LBch Multi-Channel Selector Data
: RBch Multi-Channel Selector Data
MSB
Select
Address D7
D6
0AH Lch Selector
Data
D5 D4
Rch Selector
D3 D2
LBch
Selector
<Lch Multi Selector Data>
Data
D7 D6
00
Setting
MUTE()
01
8-Input
10
Multi-Channel Input
<Rch Multi Selector Data>
Data
D5 D4
00
Setting
MUTE()
01
8-Input
10
Multi-Channel Input
LSB
D1 D0
RBch
Selector
<LBch Multi Selector Data>
Data
D7 D6
00
Setting
MUTE()
01
Multi-Channel Input1
10
Multi-Channel Input2
11
Lch Output
<RBch Multi Selector Data>
Data
D7 D6
00
Setting
MUTE()
01
Multi-Channel Input1
10
Multi-Channel Input2
11
Rch Output
()Initial Setting
NJU72340A
– 11 –
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet NJU72340A.PDF ] | |
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