BL1110A

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 -1Total 8 Pages 8/10/2006 Wrote by 2006 SELECTION GUIDE： BL1110A DIP14：plastic dual in-line package; 14 leads (300 mil) SO14：plastic small outline package; 14 leads; body width 3.9 mm PIN CONFIGURATION： PIN DESCRIPTION： PIN SYMBOL 1 LN 2 SLPE 3 REG 4 nc 5 DTMF 6 _MUTE 7 IR 8...