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PDF NJU72342 Data sheet ( Hoja de datos )
| Número de pieza | NJU72342 | |
| Descripción | 4 Channels Electronic Volume | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJU72342 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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NJU72342
4 Channels Electronic Volume
GENERAL DESCRIPTION
The NJU72342 is a 4 channels I2C electronic volume IC with
external mute controls.
The NJU72342 has many characteristics that are useful in audio
application, such as low noise, low distortion, and wide operating
voltage range.
All functions are controlled by I2C BUS interface.
PACKAGE OUTLINE
FEATURES
Operating Voltage
Input Gain
Volume
Low Distortion
Low Noise
External Mute
Zero Cross Detection
I2C BUS Control
CMOS Technology
Small Package
BLOCK DIAGRAM
V+=4.5V 14.5V
0dB/+3dB/+6dB/+9dB
0~-95dB/Mute ,1dBstep
0.002% typ.
2.0µVrms typ.
SSOP14
SSOP14
PIN CONFIGURATION
IN1
IN2
IN3
IN4
MUTE
SDA
SCL
I2C
OUT1
OUT2
OUT3
OUT4
V r ef
Zero Cross
Detection
No. Symbol
1 IN1
2 IN2
3 IN3
4 IN4
5 MUTE
6 SDA
7 SCL
8 V+
9 VREF
10 GND
11 OUT4
12 OUT3
13 OUT2
14 OUT1
Function
Input Terminal 1
Input Terminal 2
Input Terminal 3
Input Terminal 4
Mute Terminal
I2C Data Input Terminal
/Acknowledge Output
I2C Clock Terminal
Power Supply Terminal
Reference Voltage
Terminal
Ground Terminal
Output Terminal 4
Output Terminal 3
Output Terminal 2
Output Terminal 1
Ver.0.8E
–1–
1 page  
TEST CIRCUIT
IDD / VREF
2.2uF
IN1
1
2.2uF
IN2
2
2.2uF
IN3
3
2.2uF
IN4
4
MUTE
5
SDA
6
SCL
7
Zero Cross
Detection
I2C
Vref
Bias
OUT1
14
OUT2
13
OUT3
12
OUT4
11
GND
10
VREF
9
10uF
V+
8
10uF
V V+
A
VNO
2.2uF
IN1
1
2.2uF
IN2
2
2.2uF
IN3
3
2.2uF
IN4
4
MUTE
5
SDA
6
SCL
7
Zero Cross
Detection
I2C
Vref
Bias
OUT1
2.2uF
14
RL=47kΩ
V
OUT2
2.2uF
13
RL=47kΩ
V
OUT3
2.2uF
12
RL=47kΩ
V
OUT4
2.2uF
11
RL=47kΩ
V
GND
10
VREF
9
10uF
V+
V+
8
10uF
NJU72342
VINS / VOM / GV1 / GV2 / GV3 / GCB / THD
2.2uF
IN1
1
2.2uF
IN2
2
2.2uF
IN3
3
2.2uF
IN4
4
MUTE
5
SDA
6
SCL
7
Zero Cross
Detection
I2C
Vref
Bias
OUT1
2.2uF
14
RL=47kΩ
V
OUT2
2.2uF
13
RL=47kΩ
V
OUT3
2.2uF
12
RL=47kΩ
V
OUT4
2.2uF
11
RL=47kΩ
V
GND
10
VREF
9
10uF
V+
V+
8
10uF
CS
2.2uF
IN1
1
2.2uF
IN2
2
2.2uF
IN3
3
2.2uF
IN4
4
MUTE
5
SDA
6
SCL
7
Zero Cross
Detection
I2C
Vref
Bias
OUT1
2.2uF
14
RL=47kΩ
V
OUT2
2.2uF
13
RL=47kΩ
V
OUT3
2.2uF
12
RL=47kΩ
V
OUT4
2.2uF
11
RL=47kΩ
V
GND
10
VREF
9
10uF
V+
V+
8
10uF
–5–
5 Page 
NJU72342
VOLUME B (Select Address : 01H/02H/03H/04H)
VOLUME B
Gain(dB)
Ch 1
Ch 2
Ch 3
Ch 4
Mute
Mute
0
-1
-2
-3
-4
-5
-6
-90
-91
-92
-93
-94
-95
Mute
Mute*
D6 D5 D4 D3 D2
D6 D5 D4 D3 D2
D6 D5 D4 D3 D2
D6 D5 D4 D3 D2
11111
11110
11101
11101
11101
11101
11100
11100
11100
00111
00111
00110
00110
00110
00110
00101
00000
D1 D0
D1 D0
D1 D0
D1 D0
11
00
11
10
01
00
11
10
01
01
00
11
10
01
00
11
00
*: Default Value
– 11 –
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet NJU72342.PDF ] | |
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