TS2418 Series
Telephone Tone Ringer with Bridge Diode
SOP-8
DIP-8
Pin Definition:
1. Ring
5. TIP
2. Ground
7. RC
3. SRC
6. AVA
4. OFC
5. Output
General Description
The TS2418 is a monolithic integrated circuit telephone tone ringer with bridge diode, when coupled with an
appropriate transducer, it replaces the electromechanical bell. This device is designed for use with either a piezo
transducer or an inexpensive transformer coupled speaker to produce a pleasing tone composed of a high
frequency (fR) alternating with a low frequency (fL) resulting in a warble frequency. The supply voltage is obtained
from the AC ring signal and the circuit is designed so that noise on the line or variation of the ringing signal can not
affect correct operation of the device
Features
●
●
●
●
●
●
●
●
On chip high voltage full wave diode bridge rectifier.
Low current consumption, in order to allow the parallel
operation of the 4 devices.
Low external component count.
Tone and switching frequencies adjustable by external
components.
High noise immunity due to built-in voltage current
hysteresis.
Activation voltage adjustable.
Internal zener diodes to protect against over voltages.
Ringer impedance adjustable with external
components.
Ordering Information
Part No.
TS2418CD C3
TS2418CS RL
Package
DIP-8
SOP-8
Packing
50pcs / Tube
2.5Kpcs / 13” Reel
Block Diagram
1/6
Version: A07
TS2418 Series
Telephone Tone Ringer with Bridge Diode
Absolute Maximum Rating
Parameter
Calling Voltage (f=50Hz) Continuous
Calling Voltage (f=50Hz) 5 Sec ON/10 Sec OFF
Supply Current
Operating Temperature
Symbol
V
TP
V
TP
I
CC
T
OP
Value
120
200
22
0~+70
Unit
Vrms
Vrms
mA
0
0
C
C
Storage and Junction Temperature
Tstg
-65~+150
Note: a. Maximum Rating are those values beyond which damage to the device may occur.
b. Functional operation should be restricted to the Recommended Operating Conditions.
Recommended Operating Conditions
Description
Supply Voltage
Operating Temperature
Symbol
V
CC
T
A
Min
--
-20
Max
26
+70
Unit
V
0
C
Note: This device contains protection circuitry to guard against damage due to high static voltages or electric fields.
However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this
high-impedance circuit. For proper operation, V
IN
and V
OUT
should be constrained to the range GND≦(V
IN
or V
OUT
)≦
V
CC
. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V
CC
). Unused output
must be left open.
Electrical Specifications
(Ta = 25
o
C, unless otherwise noted)
Parameter
Supply Voltage
Current Consumption without Load
Activation Voltage
Activation Voltage Range
Sustaining Voltage
Differential Resistance in Off Condition
Output Voltage Swing
Short Circuit Current
AC Operation
Output Frequency
f
H1
f
H2
f
H1
Range
Sweep Frequency
f
L
f
H1
f
H2
V
CC
=26V,R1=14KΩ
V
SCR
=0V
V
SCR
=6V
R1=27KΩ to 1.7 KΩ
R1=14KΩ,C1=100nF
--
--
0.1
--
2300
1700
--
10
--
--
15
--
Hz
Hz
KHz
Hz
Symbol
V
CC
I
CC
V
ON
V
ONR
V
SUS
R
D
V
OUT
I
OUT
Test Conditions
Vs = 8.8 to 26V
R
A
=1KΩ
Min
--
--
12.2
8.0
8.0
6.4
--
Typ
--
1.5
--
--
--
--
V
CC
-3
35
Max
26
1.8
13
10
8.8
--
--
--
Unit
V
mA
V
V
V
KΩ
V
mA
Vs=26V
--
2/6
Version: A07
TS2418 Series
Telephone Tone Ringer with Bridge Diode
Test and Application Circuit
.
Description:
The TS2418 tone ringer derives its power supply by rectifying the AC ringing signal. It uses this power to activate
two tone generators. The two tone frequencies generated are switched by internal oscillator in a fast sequence and
made audible across an output amplifier in the loudspeaker; both tone frequencies and the switching frequency can
be externally adjusted.
The device can drive either directly a piezo ceramic converter (buzzer) or small loudspeaker. In case of using a loud-
speaker, a transformer is needed.
An internal shunt voltage regulator provides DC voltage to the output stage, low frequency oscillator, and high f
frequency oscillator. To protect the IC from telephone line transients, a zener Diode is included.
3/6
Version: A07
TS2418 Series
Telephone Tone Ringer with Bridge Diode
SOP-8 Mechanical Drawing
DIM
A
B
C
D
F
G
K
M
P
R
SOP-8 DIMENSION
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX.
4.80
5.00
0.189
0.196
3.80
4.00
0.150
0.157
1.35
1.75
0.054
0.068
0.35
0.49
0.014
0.019
0.40
1.25
0.016
0.049
1.27BSC
0.05BSC
0.10
0.25
0.004
0.009
0º
7º
0º
7º
5.80
6.20
0.229
0.244
0.25
0.50
0.010
0.019
4/6
Version: A07
TS2418 Series
Telephone Tone Ringer with Bridge Diode
DIP-8 Mechanical Drawing
DIM
A
B
C
D
G
J
K
L
M
DIP-8 DIMENSION
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX
9.07
9.32
0.357
0.367
6.22
6.48
0.245
0.255
3.18
4.45
0.125
0.135
0.35
0.55
0.019
0.020
2.54 (typ)
0.10 (typ)
0.29
0.31
0.011
0.012
3.25
3.35
0.128
0.132
7.75
8.00
0.305
0.315
o
o
-
10
-
10
5/6
Version: A07
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
