KK2418 Tone Ringer Datasheet

KK2418 Datasheet, PDF, Equivalent


Part Number

KK2418

Description

Telephone Tone Ringer

Manufacture

Kodenshi

Total Page 4 Pages
Datasheet
Download KK2418 Datasheet


KK2418
TECHNICAL DATA
Telephone Tone Ringer with
Bridge Diode
KK2418
The KK2418 is a monolithic integrated circuit telephone tone ringer with
bridge diode, when coupled with an appropriate transducer, it replaces
the electro-mechanical bell. The 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.
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
KK2418N Plastic DIP
KK2418D
SOIC
TA = -40° to 70° C
for package
PIN ASSIGNMENT
BLOCK DIAGRAM
1
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KK2418
KK2418
MAXIMUM RATINGS* (TA = 25°C)
Symbol
Parameter
Value
VTP Calling Voltage (f = 50 Hz) Continuous
120
VTP Calling Voltage (f = 50 Hz) 5 Sec ON/10 Sec OFF
200
ICC Supply Current
22
Tstg Storage and Junction Temperature
-60 to +125
* Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
Unit
Vrms
Vrms
mA
°C
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
TA
Parameter
Supply Voltage
Operating Temperature
Min
Max
Unit
26 V
-40 +70 °C
This device contains protection circuitry to guard against damage due to high static voltages or electric fields.
However, precautions m ust be taken to avoid applications of any voltage highe r than maximum rated voltages to this
high-impedance ci rcuit. For proper operat ion, V IN 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
outputs must be left open.
ELECTRICAL CHARACTERISTICS (TA = 25°C)
Symbol
Parameter
Test Conditions
ICC
VON
VONR
VSUS
RD
VOUT
IOUT
Current Consumption without
Load
Activiation Voltage
Activiation Voltage Range
Sustaining Voltage
Differential Resistance in Off
Condition
Output Voltage Swing
Short Circuit Current
VS=8.8 to 26 V
RA = 1 K
VTIP = 8.0 V
VRING = 0 V
VS = 26 V,
VSRC = 8.0 V,
VOFR = 8.0 V
VS = 26 V
Guaranteed Limits
Min Max
1.8
12.2 13
8 10
8 8.8
6.4 3500
21 25.5
Unit
mA
V
V
V
K
V
30 80 mA
2


Features TECHNICAL DATA Telephone Tone Ringer wi th Bridge Diode The KK2418 is a monolit hic integrated circuit telephone tone r inger with bridge diode, when coupled w ith an appropriate transducer, it repla ces the electro-mechanical bell. The de vice is designed for use with either a piezo transducer or an inexpensive tran sformer coupled speaker to produce a pl easing tone composed of a high frequenc y (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 desi gned so that noise on the line or varia tion of the ringing signal can not affe ct correct operation of the device. • On chip high voltage full wave diode b ridge rectifier • Low current consump tion, in order to allow the parallel op eration of the 4 devices • Low extern al component count • Tone and switchi ng frequencies adjustable by external c omponents • High noise immunity due t o built-in voltage-current hysteresis • Activation voltage adjustable • I.
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