U3892, U3900B, U3900BM Selling Leads, Datasheet
MFG:TFK Package Cooled:TEMIC D/C:SMD
U3892, U3900B, U3900BM Datasheet download
Part Number: U3892
MFG: TFK
Package Cooled: TEMIC
D/C: SMD
U3892, U3900B, U3900BM
- Table of contents:
Info of U3892
Info of U3900B
Info of U3900BM
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About U3800
PDF/DataSheet Download
Datasheet: U3800
File Size: 1172563 KB
Manufacturer: TEMIC [TEMIC Semiconductors]
Download : Click here to Download
About U3900BM
PDF/DataSheet Download
Datasheet: U3900BM
File Size: 780445 KB
Manufacturer: TEMIC [TEMIC Semiconductors]
Download : Click here to Download
About U3900BM
PDF/DataSheet Download
Datasheet: U3900BM
File Size: 780445 KB
Manufacturer: TEMIC [TEMIC Semiconductors]
Download : Click here to Download
U3900BM General Description
The programmable telephone audio processor U3900BM is a linear integrated circuit for use in feature phones, answering machines, fax machines and cordless phones.It contains the speech circuit, tone-ringer interface with DC/DC converter, sidetone equivalent and ear-protection rectifiers. The circuit is line-powered and contains allcomponents necessary for signal amplification and adaptation to the line. The U3900BM can also be suppliedvia an external power supply. An integrated voice switchwith loudspeaker amplifier enables hands-free or loudhearing operation. With an anti-feedback function, acoustical feedback during loudhearing can be reduced significantly. The generated supply voltage is suitable for a wide range of peripheral circuits.
U3900BM Maximum Ratings
|
Parameters |
Symbol |
Value |
Unit |
| Line current |
IL |
140 |
mA |
| DC line voltage |
VL |
12 |
V |
| Maximum input curret |
IRING |
15 |
V |
| Junction temperature |
Tj |
+125 |
°C |
| Ambient temperature |
Tamb |
-25 to +75 |
°C |
| Storage temperature |
Tstg |
55 to +150 |
°C |
| Total power dissipation, Tamb = 60°C |
Ptot
|
0.9
|
W
|
U3900BM Features
· Speech circuit with anti-clipping
· Tone ringer interface with DC/DC converter
· Speaker amplifier with anti-distortion
· Power-supply management, regulated, unregulated and a special supply for electret microphone
· Voice switch
· CLID + SCWID
· DTMF generator
· Switch matrix
· Line current information
· Fully programmable
· Watchdog
U3900BM Typical Application
Feature phone, answering machine, fax machine, speaker phone, base station of cordless phone
U3900BM Connection Diagram
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