AN618 Panasonic Semiconductor, AN618 Datasheet - Page 21
AN618
Manufacturer Part Number
AN618
Description
Recording and playing amplifier IC for answering telephones
Manufacturer
Panasonic Semiconductor
Datasheet
1.AN618.pdf
(21 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AN6180K
Manufacturer:
OKI
Quantity:
6 242
ICs for Telephone
Pin No.
Detailed Pin Descriptions(cont.)
40
38
39
41
42
TRB
TRE
BGR
V
SOUT
CC
1
Symbol
[To the emitter of the transmission transistor]
This pin connects to the emitter of Q3
(transmission transistor)and R33 to adjust
the Q3 gain.
[Band-gap ref. voltage output]
Connects to GND through C39(47 F).
[Power output to the handset and hands-
free circuits]
The power supply pin for the signal proc-
essing circuits.
[Hands-free control output]
Outputs transmitter monitor signals in the
HF mode. Connects through R16 and
C10 to LOG amp.(2)input at Pin8.
[To the base of the transmission transistor]
This pin connects to the base of Q3
(transmission transistor).
Description
BGR
Equivalent circuit
–
–
42 SOUT
AN6175K
39
BGR
38
40
21