U4080B-B, U4082, U4082B Selling Leads, Datasheet
MFG:TFK Package Cooled:TFK D/C:96
U4080B-B, U4082, U4082B Datasheet download
Part Number: U4080B-B
MFG: TFK
Package Cooled: TFK
D/C: 96
U4080B-B, U4082, U4082B
- Table of contents:
Info of U4080B-B
Info of U4082
Info of U4082B
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About U401
PDF/DataSheet Download
Datasheet: U401
File Size: 29550 KB
Manufacturer: CALOGIC [Calogic, LLC]
Download : Click here to Download
About U4082B
PDF/DataSheet Download
Datasheet: U4082B
File Size: 333074 KB
Manufacturer: Atmel
Download : Click here to Download
About U4082B
PDF/DataSheet Download
Datasheet: U4082B
File Size: 333074 KB
Manufacturer: Atmel
Download : Click here to Download
U4082B General Description
The low-voltage voice-switched speakerphone circuit,U4082B, incorporates the wide range of functions listedbelow. Versatility of the device is further enhanced bygiving access to internal circuit points. The block diagram(figure 1) shows amplifiers, level detectors, transmit andreceive attenuators operating in complementary func-tions, background noise monitors, chip disable, dial tonedetector and mute function. Due to low-voltage opera-tion, it can be operated either by a low supply or via atelephone line requiring 5.5 mA typically. Also featuredis stand-alone operation through a coupling transformer(Tip and Ring) or in conjunction with a handset speechnetwork, as shown in figure 2
U4082B Maximum Ratings
|
Parameters |
Symbol |
Value |
Unit |
|
Supply voltage |
VS |
1.0 to +7.0 |
V |
|
Voltages |
LOP, LON |
1.0 to (VS +1.0) |
V |
|
Storage temperature |
Tstg |
-55 to +150 |
°C |
|
Junction temperature |
TJ |
125 |
°C |
|
Ambient temperature range |
Tamb |
20 to +60 |
°C |
|
ower dissipation |
Ptot |
520 |
mW |
|
Maximum thermal resistance |
RthJA |
120 |
K/W |
U4082B Features
Low-voltage operation: 3 to 6.5 V
Attenuator gain range between transmit and receive: 52 dB
Four point signal sensing for improved sensitivity
Monitoring system for background-noise level
Microphone amplifier gain adjustableMute function
Chip disable for active/standby operation
On-board filter
Dial tone detector
Compatible with U4083B speaker amplifier
Attenuator gain range between transmit and receive: 52 dB
Four point signal sensing for improved sensitivity
Monitoring system for background-noise level
Microphone amplifier gain adjustableMute function
Chip disable for active/standby operation
On-board filter
Dial tone detector
Compatible with U4083B speaker amplifier
U4082B Connection Diagram
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