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PDF NJU72341 Data sheet ( Hoja de datos )
| Número de pieza | NJU72341 | |
| Descripción | 2 Channels Electronic Volume | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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NJU72341
2 Channels Electronic Volume
GENERAL DESCRIPTION
The NJU72341 is a 2 channels I2C electronic volume IC with
external mute controls.
The NJU72341 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
MUTE
SDA
SCL
I2C
OUT1
OUT2
V r ef
Zero Cross
Detection
No. Symbol
1 NC
2 NC
3 IN1
4 IN2
5 MUTE
6 SDA
7 SCL
8 V+
9 VREF
10 GND
11 OUT2
12 OUT1
13 NC
14 NC
Function
-
-
Input Terminal 1
Input Terminal 2
Mute Terminal
I2C Data Input Terminal
/Acknowledge Output
I2C Clock Terminal
Power Supply Terminal
Reference Voltage
Terminal
Ground Terminal
Output Terminal 2
Output Terminal 1
-
-
Ver.0.8E
–1–
1 page  
TEST CIRCUIT
IDD / VREF
NC
1
NC
2
2.2uF
IN1
3
2.2uF
IN2
4
MUTE
5
SDA
6
SCL
7
Zero Cross
Detection
I2C
Vref
Bias
NC
14
NC
13
OUT1
12
OUT2
11
GND
10
VREF
9
10uF
V+
8
10uF
V V+
A
VNO
NC
1
NC
2
2.2uF
IN1
3
2.2uF
IN2
4
MUTE
5
SDA
6
SCL
7
Zero Cross
Detection
I2C
Vref
Bias
NC
14
NC
13
OUT1
2.2uF
12
RL=47kΩ
V
OUT2
2.2uF
11
RL=47kΩ
V
GND
10
VREF
9
10uF
V+
V+
8
10uF
NJU72341
VINS / VOM / GV1 / GV2 / GV3 / GCB / THD
NC
1
NC
2
2.2uF
IN1
3
2.2uF
IN2
4
MUTE
5
SDA
6
SCL
7
Zero Cross
Detection
I2C
Vref
Bias
NC
14
NC
13
OUT1
2.2uF
12
RL=47kΩ
V
OUT2
2.2uF
11
RL=47kΩ
V
GND
10
VREF
9
10uF
V+
V+
8
10uF
CS
NC
1
NC
2
2.2uF
IN1
3
2.2uF
IN2
4
MUTE
5
SDA
6
SCL
7
Zero Cross
Detection
I2C
Vref
Bias
NC
14
NC
13
OUT1
2.2uF
12
RL=47kΩ
V
OUT2
2.2uF
11
RL=47kΩ
V
GND
10
VREF
9
10uF
V+
V+
8
10uF
–5–
5 Page 
NJU72341
VOLUME B (Select Address : 01H, 02H)
Gain(dB)
Ch 1
Ch 2
Mute
Mute
0
-1
-2
-3
-4
-5
-6
-90
-91
-92
-93
-94
-95
Mute
Mute*
D6 D5
D6 D5
11
11
11
11
11
11
11
11
11
00
00
00
00
00
00
00
00
VOLUME B
D4 D3 D2
D4 D3 D2
111
110
101
101
101
101
100
100
100
111
111
110
110
110
110
101
000
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 NJU72341.PDF ] | |
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