TSC TS2418_07

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
Ordering Information
●
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
Part No.
Package
Packing
TS2418CD C3
TS2418CS RL
DIP-8
SOP-8
50pcs / Tube
2.5Kpcs / 13” Reel
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.
Block Diagram
1/6
Version: A07
TS2418 Series
Telephone Tone Ringer with Bridge Diode
Absolute Maximum Rating
Parameter
Symbol
Value
Unit
Calling Voltage (f=50Hz) Continuous
VTP
120
Vrms
Calling Voltage (f=50Hz) 5 Sec ON/10 Sec OFF
VTP
200
Vrms
Supply Current
ICC
22
mA
Operating Temperature
TOP
0~+70
0
C
0
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.
C
Recommended Operating Conditions
Description
Supply Voltage
Operating Temperature
Symbol
Min
Max
VCC
--
26
TA
-20
Unit
V
0
C
+70
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, VIN and VOUT should be constrained to the range GND≦(VIN or VOUT)≦
VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC ). Unused output
must be left open.
Electrical Specifications (Ta = 25oC, unless otherwise noted)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
--
--
26
V
--
1.5
1.8
mA
12.2
--
13
V
8.0
--
10
V
Supply Voltage
VCC
Current Consumption without Load
ICC
Activation Voltage
VON
Activation Voltage Range
VONR
Sustaining Voltage
VSUS
8.0
--
8.8
V
RD
6.4
--
--
KΩ
Output Voltage Swing
VOUT
--
VCC-3
--
V
Short Circuit Current
IOUT
--
35
--
mA
Differential Resistance in Off Condition
Vs = 8.8 to 26V
RA=1KΩ
Vs=26V
AC Operation
Output Frequency
VCC =26V,R1=14KΩ
fH1
fH1
VSCR =0V
--
2300
--
Hz
fH2
fH2
VSCR =6V
--
1700
--
Hz
R1=27KΩ to 1.7 KΩ
0.1
--
15
KHz
R1=14KΩ,C1=100nF
--
10
--
Hz
fH1 Range
Sweep Frequency
fL
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 loudspeaker, 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
4/6
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
Version: A07
TS2418 Series
Telephone Tone Ringer with Bridge Diode
DIP-8 Mechanical Drawing
DIM
A
B
C
D
G
J
K
L
M
5/6
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
Version: A07
TS2418 Series
Telephone Tone Ringer with Bridge Diode
Notice
Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf,
assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, to any
intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for
such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale
and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability,
or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers
using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for
any damages resulting from such improper use or sale.
6/6
Version: A07