KA2428B, KA2449, KA245VXK Selling Leads, Datasheet
MFG:SEC Package Cooled:93+ D/C:464
KA2428B, KA2449, KA245VXK Datasheet download
Part Number: KA2428B
MFG: SEC
Package Cooled: 93+
D/C: 464
MFG:SEC Package Cooled:93+ D/C:464
KA2428B, KA2449, KA245VXK Datasheet download
MFG: SEC
Package Cooled: 93+
D/C: 464
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PDF/DataSheet Download
Datasheet: KA2002-BE10A
File Size: 52501 KB
Manufacturer: Rohm
Download : Click here to Download
PDF/DataSheet Download
Datasheet: KA2002-BE10A
File Size: 52501 KB
Manufacturer: Rohm
Download : Click here to Download
PDF/DataSheet Download
Datasheet: KA2002-BE10A
File Size: 52501 KB
Manufacturer: Rohm
Download : Click here to Download
The KA2418B/28 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 frequencys (fH1, fH2) alternating with a low frequency (fS) 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.
Characteristic |
Symbol |
Value |
Unit |
Calling Voltage (f = 50HZ) Continuous Calling Voltage (f = 50HZ) |
VC |
120 |
Vrms |
5 Sec ON/10 Sec OFF |
VC(0N-OFF) |
200 |
Vrms |
Supply Current |
ICC |
22 |
mA |
Operating Temperature |
TOPR |
−20 ~ 75 |
°C |
Storage and Junction Temperature |
TSTG |
-65 ~ +150 |
°C |
Absolute maximum ratings are those values beyond which permanent damage to the device may occur. These are stress ratings only and functional operation of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.
· Built-in full wave bridge diode rectifier
· Low current consumption, in order to allow the parallel operation of the 4 devices
· Few external components
· Tone and adjustable switching frequencies by external components
· High noise immunity due to built-in voltage to current hysteresis
· Adjustable activation voltage
· Internal zener diodes to protect against over voltages
· Adjustable ringer impedance with external components.