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NJW1124V

更新时间: 2024-11-06 06:00:55
品牌 Logo 应用领域
NJRC /
页数 文件大小 规格书
29页 477K
描述
Voice Switched Speakerphone circuit

NJW1124V 技术参数

生命周期:Active零件包装代码:SSOP
包装说明:SSOP-32针数:32
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.8商用集成电路类型:CONSUMER CIRCUIT
JESD-30 代码:R-PDSO-G32长度:11 mm
功能数量:1端子数量:32
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:LSSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
认证状态:Not Qualified座面最大高度:1.45 mm
最大供电电压 (Vsup):4.5 V最小供电电压 (Vsup):2.9 V
表面贴装:YES温度等级:INDUSTRIAL
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL宽度:5.6 mm

NJW1124V 数据手册

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NJW1124  
Voice Switched Speakerphone circuit  
! GENERAL DESCRIPTION  
! PACKAGE OUTLINE  
The NJW1124 is a Voice Switched Speakerphone Circuit.  
NJW1124 includes all of functions processing a high quality hands–free  
speakerphone system, such as the necessary amplifiers ( Microphone ,  
Receive ,Line), attenuators, level detectors functions.  
All external capacitors are sufficient small so that ceramic capacitors are  
applied.  
NJW1124V  
! APPLICATION  
Video Door Phone  
Conference System  
Wireless Application  
Security System  
! FEATURES  
Operating voltage range  
2.9 to 4.5V  
Force to Receive, Transmit, or Idle modes  
Mode –watching monitor  
Attenuator gain range between Transmit and Receive  
Microphone amplifier with mute function  
Background noise monitor for each path  
Volume control range  
52dB  
40dB  
4-point signal sensing  
Microphone and Receive Amplifiers pinned out for flexibility  
Package Outline  
SSOP32  
! BLOCK DIAGRAM  
C8  
C9  
C6 R2  
100n 5.1k  
R3  
51k  
C7  
100n  
R6  
5.1k  
R7  
51k  
100n 100n  
Microphone  
Line Out  
R4  
51k  
TLI2  
R5  
C10  
10k  
MCO  
MCI  
TLI1 TXO  
LII  
LiO-  
LiO+  
V+  
R1  
300k  
V+  
C11  
Tx Attenuator  
-1  
1
µ
Mic  
Amplifier  
VREF  
V+  
VREF  
Line Amplifier  
C1  
1
Monitor  
CT  
µ
MUT  
C5  
C3  
470n  
C4  
Level  
Detector  
1
µ
TLO2  
RLO2  
V+  
470n  
RTSW  
CPR  
C2  
1u  
Background  
NoiseMonitor  
Attenuator  
Control  
Background  
NoiseMonitor  
C22  
1
µ
CPT  
C20  
470n  
Level  
Detector  
TLO1  
RLO1  
C21  
470n  
C23  
1
µ
BIAS  
VREF  
Receive  
Amplifier  
IC1  
NJW1124  
VREF2  
Rx Attenuator  
1.2  
GND  
VREF  
FI  
A
µ
VLC  
RLI1 FO  
RXO RLI2  
R11  
C17  
100n  
R12  
51k  
5.0V  
R10  
15k  
V+  
C18  
R13  
5.1k  
R14 C19  
5.1k 100n  
100n  
C16  
RVLC  
+
10k  
Recive In  
10  
C15  
µ
C13  
1 µ  
1
µ
Speaker  
C14  
IC2  
1 µ  
NJU7084  
R9  
22k  
R8  
C12  
Power Amplifier  
11k 100n  
– 1 –  

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