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BL1110A Schematic ( PDF Datasheet ) - BELLING

Teilenummer BL1110A
Beschreibung Low voltage versatile transmission IC
Hersteller BELLING
Logo BELLING Logo 




Gesamt 8 Seiten
BL1110A Datasheet, Funktion
DESCRIPTION:
BL1110A
BL1110A(BL1001) is a low voltage versatile transmission IC. It offers the
entire microphone, receive and line interface functions required in telephone sets. It
performs the interface between the line and the transducers of the handset. It includes
a DTMF amplifier, a microphone amplifier and a receive amplifier. The selection
between the microphone amplifier and the DTMF amplifier is made with a “MUTE”
function. The MUTE/input switches-off both the microphone and the receive
amplifiers and switches-on the DTMF amplifier.
FEATURES
Low DC line voltage: operates down to 1.6 V
Voltage regulator with adjustable DC voltage
Provides a supply for external circuits
Symmetrical high impedance inputs (64 kW) for dynamic, magnetic or piezo-
electric microphones
Asymmetrical high impedance input (32 kW) for electrets microphones
DTMF input with confidence tone
MUTE input for pulse or DTMF dialing
Receiving amplifier for dynamic, magnetic or piezo-electric earpieces
AGC line loss compensation for microphone and earpiece amplifiers.
Line powered telephone sets, cordless telephones, fax machines, answering
machines.
BLOCK DIAGRAM
BL1001
http://www.belling.com.cn
-1-
Total 8 Pages
8/10/2006
Wrote by 2006






BL1110A Datasheet, Funktion
TYPICAL CHARACTERISTICS
BL1110A
Fig.1 Main voltages versus Line current
Fig.2 Voltage gain from MIC to LN
http://www.belling.com.cn
-6-
Total 8 Pages
8/10/2006
Wrote by 2006

6 Page







SeitenGesamt 8 Seiten
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