KA2418B Samsung, KA2418B Datasheet

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KA2418B

Manufacturer Part Number
KA2418B
Description
Tone ringer with bridge diode
Manufacturer
Samsung
Datasheet
1.KA2418B.pdf (3 pages)

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Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
KA2418B
Manufacturer:
SAMSUNG
Quantity:
9 904
Company:
BOSTOCK HK LIMITED BOSTOCK HK LIMITED
Part Number:
KA2418B
Manufacturer:
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Quantity:
922
KA2418B/28
INTRODUCTION
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 (f
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
BLOCK DIAGRAM
Built-in full wave bridge diode rectifier
Low current consumption, in order to allow the
Few external components
Tone and adjustable switching frequencies by
High noise immunity due to built-in voltage to
Adjustable activation voltage
Internal zener diodes to protect against over
Adjustable ringer impedance with external
components.
parallel operation of the 4 devices
external components
current hysteresis
voltages
RING
TIP
8
1
H1
, f
GND
2
H2
-
) alternating with a low frequency (f
+
RECTIFIER
CAPACITOR
CONTROL
CIRCUIT
POWER
SUPPLY
7
SWEEP RATE
CONTROL
CAPACITOR
Fig. 1
3
TONE RINGER WITH BRIDGE DIODE
FREQ OSC
LOW
S
)
OUTPUT FREQUENCY
CONTROL RESISTOR
4
APPLICATIONS
KA2418B
KA2428
ORDERING INFORMATION
Electronic telephone ringers
Extension ringers
Device
FREQ OSC
HIGH
8-DIP-300
Package
ACTIVATION
VOLTAGE ADJUSTABLE
8-DIP-300
OUTPUT
AMP
6
Operating Temperature
5
- 20 C ~ + 70 C
OUTPUT

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KA2418B Summary of contents

Page 1

... KA2418B/28 INTRODUCTION The KA2418B/ 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 ...

Page 2

... Operating Voltage Current Consumption without Lode Activiation Voltage Activiation Voltage Range Sustaining Voltage Differential Resistance in off Condition Output Voltage Swing Short Circuit Current AC ELECTRICAL CHARACTERISTICS Characteristic Output Frequencies (KA2418B) Output Frequencies (KA2428) f Range H1 Sweep Frequency TONE RINGER WITH BRIDGE DIODE Symbol Value V ...

Page 3

... H2 TONE RINGER WITH BRIDGE DIODE R3 224 10K 10K 6 5 KA2418B/28 Piezo Vout 1300 : 12K 100nF 1000 C1(nF) Fig. 2 KA2418B KA2418B 4 3. (K) 2300 + 300 ( 1700 + 300 ( KA2428B 4 2. (K) 1900 + 100 ( 1300 + 100 ( ...

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