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UR082B-MFLG PDF预览

UR082B-MFLG

更新时间: 2024-09-15 21:14:59
品牌 Logo 应用领域
爱特美尔 - ATMEL ATM异步传输模式电信光电二极管电信集成电路
页数 文件大小 规格书
30页 542K
描述
Speaker Phone Circuit, PDSO28, LEAD FREE, SO-28

UR082B-MFLG 技术参数

生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP,针数:28
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.63JESD-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封装形状:RECTANGULAR
封装形式:SMALL OUTLINE认证状态:Not Qualified
标称供电电压:5 V表面贴装:YES
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 mm
Base Number Matches:1

UR082B-MFLG 数据手册

 浏览型号UR082B-MFLG的Datasheet PDF文件第2页浏览型号UR082B-MFLG的Datasheet PDF文件第3页浏览型号UR082B-MFLG的Datasheet PDF文件第4页浏览型号UR082B-MFLG的Datasheet PDF文件第5页浏览型号UR082B-MFLG的Datasheet PDF文件第6页浏览型号UR082B-MFLG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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