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U4082B-MFLG3G PDF预览

U4082B-MFLG3G

更新时间: 2024-11-28 06:02:59
品牌 Logo 应用领域
爱特美尔 - ATMEL 电信集成电路电信电路电话电路光电二极管异步传输模式ATM
页数 文件大小 规格书
30页 541K
描述
Low-voltage Voice-switched IC for Hands-free Operation

U4082B-MFLG3G 技术参数

是否Rohs认证:符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SOP, SOP28,.4
针数:28Reach Compliance Code:unknown
ECCN代码:5A991.GHTS代码:8542.39.00.01
风险等级:5.59Is Samacsys:N
JESD-30 代码:R-PDSO-G28长度:17.925 mm
功能数量:1端子数量:28
最高工作温度:60 °C最低工作温度:-20 °C
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP28,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE电源:5 V
认证状态:Not Qualified座面最大高度:2.6 mm
子类别:Telephone Circuits最大压摆率:0.008 mA
标称供电电压:5 V表面贴装:YES
技术:BIPOLAR电信集成电路类型:SPEAKER PHONE CIRCUIT
温度等级:COMMERCIAL端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
宽度:7.4 mmBase Number Matches:1

U4082B-MFLG3G 数据手册

 浏览型号U4082B-MFLG3G的Datasheet PDF文件第2页浏览型号U4082B-MFLG3G的Datasheet PDF文件第3页浏览型号U4082B-MFLG3G的Datasheet PDF文件第4页浏览型号U4082B-MFLG3G的Datasheet PDF文件第5页浏览型号U4082B-MFLG3G的Datasheet PDF文件第6页浏览型号U4082B-MFLG3G的Datasheet PDF文件第7页 
Features  
Low-voltage Operation 3V to 6.5V  
Attenuator Gain Range Between Transmit and Receive: 52 dB  
Four-point Signal Sensing for Improved Sensitivity  
Monitoring System for Background Noise Level  
Adjustable Microphone Amplifier Gain  
Mute Function  
Chip Disable for Active/Standby Operation  
On-board Filter  
Low-voltage  
Voice-switched  
IC for  
Hands-free  
Operation  
Dial Tone Detector  
Compatible with U4083B Speaker Amplifier  
Benefits  
Fast Channel Switching Allows Quasi-duplex Operation  
Proper Operation in Noisy Surroundings  
1. Description  
The low-voltage voice-switched speakerphone circuit, U4082B, incorporates a wide  
range of functions. The versatility of the device is further enhanced by giving access to  
internal circuit points. The block diagram (see Figure 1-1) shows amplifiers, level  
detectors, transmit and receive attenuators operating in complementary functions,  
background noise monitors, chip disable, dial tone detector and mute function. Due to  
low-voltage operation, the device can be operated either by a low supply or via a tele-  
phone line requiring 5.5 mA typically. Stand-alone operation is enabled by a coupling  
transformer (Tip and Ring) or in conjunction with a handset speech network, as shown  
in Figure 1-2 on page 2.  
U4082B  
Figure 1-1. Block Diagram  
MIC  
11 MICO 10 17 TLI2  
9
8
7
HTI  
6
HTO-  
TI  
TO  
-
-
+
T Attenuator  
VS  
-
5
+
HTO+  
+
VB  
VB  
12  
MUTE  
VB  
27  
CPR  
AGC  
Background  
Noise Monitor  
Background  
Noise Monitor  
16  
CPT  
23  
TLI1  
Level  
Detectors  
Level  
Detectors  
18  
TLO2  
Attenuator  
Control  
25  
RLO1  
19  
24  
TLO1  
RLO2  
Dial Tone  
Detector  
4
+
-
VS  
U4082B  
28  
VB  
GND  
Filter  
+1  
400Ω  
2
FI  
3
CD  
R Attenuator  
20  
RLI2  
15  
14  
22 21  
13  
26  
RLI1  
1 PD  
VB  
CT  
RECO  
VCI  
RI  
Rev. 4743D–CORD–03/06  

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