AN618 Panasonic Semiconductor, AN618 Datasheet - Page 16

• Manufacturer Part Number: AN618
• Description: Recording and playing amplifier IC for answering telephones
• Manufacturer: Panasonic Semiconductor

AN6175K
16
Pin No.
Detailed Pin Descriptions(cont.)
10
11
6
7
8
9
TVR
TLI1
TLI2
RLI1
RLI2
TLO1
Symbol
[LOG amp.(1)input(from MIC amp. out-
put)]
This pin connects through C9(0.1 F)and
R15(5.1 k )to the MIC amp. output.
[LOG amp.(2)input(from hands-free
control output)]
This pin connects through C10(0.1 F)and
R16(5.1 k )to the HF control output.
[LOG
preamp. output)]
This pin connects through C11(0.1 F)and
R17(5.1 k )to the receiver preamp. out-
put.
[LOG amp.(3)input(from loudspeaker
amp. output)]
This pin connects through C12(0.1 F)and
R18(5.1 k )to the loudspeaker amp. out-
put.
[LOG amp.(1)output]
Outputs amplified MIC amp. output.
Grounded through C13(2.2
attack recovery time of the attenuator
changes with the capacitance of C13.
[Noise detecting circuit reference]
This pin must be grounded through C8
(22 F).
amp.(4)input(from
Description
receiver
F). The
10
7
8
9
Equivalent circuit
–
ICs for Telephone
–
–
–
–
V
CC
1
11
6