10
KX-TS620BX1
4.3.
Ringer IC
Vcc 1
R
S
L 2
LFI 3
LFO 4
OUT
8
HFI
7
HFO
6
GND
5
LOW FREQ
O
S
C
HIGH FREQ
O
S
C
POWER
S
UPPLY
WITH
HY
S
TERI
S
I
S
AMP
Pin descriptions
1
2
3
4
5
6
7
8
Vcc
R
S
L
LFI
LFO
GND
HFO
HFI
OUT
Pin No. Pin name
Power supply pin
R
S
L pin
Low-fre
q
uency time
const
a
nt connector pin
GND pin
High-fre
q
uency time
const
a
nt connector pin
Output pin
This is the power supply pin for the lC. It is connected to the ( ) pin of
the diode
b
ridge.
This is used to ch
a
nge the oper
a
tion initi
a
tion current when connected
to the GND pin.
This is connected to the time const
a
nt th
a
t determines the oscill
a
tion
fre
q
uency on the w
a
r
b
le.
This pin h
a
s the lowest potenti
a
l on the lC. It is connected to the ( )
pin of the diode
b
ridge.
This is connected to the time const
a
nt th
a
t determines the oscill
a
tion
fre
q
uency on the tone side (the
a
udi
b
le fre
q
uency side).
This is used to connect
a
piezoelectric
b
uzzer, or to connect
a
dyn
a
mic
spe
a
ker through
a
tr
a
nsformer.
Name
Function
