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PDF IL2410 Data sheet ( Hoja de datos )

Número de pieza IL2410
Descripción Two-Tone Telephone Ringer
Fabricantes IK Semiconductor 
Logotipo IK Semiconductor Logotipo



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No Preview Available ! IL2410 Hoja de datos, Descripción, Manual

Tone Ringer
TECHNICAL DATA
IL2410
The IL2410 is a bipolar integrated circuit designed for telephone bell replacement.
Designed for Telephone Bell Replacement
Low Curent Drain
Adjustable 2-frequency Tone
Adjustable Warbling Rate
Extension Tone Ringer Modules
Alarms or Other Alerting Devices
External Triggering or Ringer Disable
Built-in hysteresis prevents false triggering and rotary dial ‘Chirps’
D SUFFIX
SOIC
ORDERING INFORMATION
IL2410N Plastic
IL2410D SOIC
TA = -45° to 65° C
for package
LOGIC DIAGRAM
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PIN ASSIGNMENT
PIN 1 = VCC
PIN 5 = GND
1. Output amplifier
2. High frequency oscillator
3. Low frequency oscillator
4. Hysteresis regulator
(Regulator circuit has built-in hysteresis to prevent false
triggering and rotary dial “Chirps”)
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IL2410 pdf
IL2410
APPLICATION NOTE
The application circuit illustrates the use of the IL2410 devices in typical telephone or extension tone ringer application.
The AC ringer signal voltage appears across the TIP and RING inputs of the circuit and is attenuated by capacitor C1
and resistor R1.
C1 also provides isolation from DC voltages (48V) on the exchange line.
After full wave rectification by the bridge diode, the waveform is filtered by capacitor C4 to provide a DC supply for
the tone ringer chip.
As this voltage exceeds the initiation voltage (VSI), oscillation starts.
With the components shown, the ouptut frequency chops between 512(fh1) and 640Hz(fh2) at a 10Hz(fL) rate.
The loudspeaker load is coupled through a 1300to 8ransformer.
The output coupling capacitor C5 is required with transformer coupled loads.
When driving a piezo-ceramic transducer type load, the coupling C5 and transformer (1300:8) are not required.
However, a current limiting resistor is required.
The low frequency oscillator oscillates at a rate (fL) controlled by an external resistor (R2) and capacitor (C2).
The frequency can be determined using the relation fL=1/1.289R2xC2. The high frequency oscillates at a fH1, fH2
controlled by an external resistor (R3) and capacitor (C3). The frequency can be determined using the relation
fH1=1/1.504R3xC3, fH2=1/1.203R3xC3.
TRIGGERING IL2410 FROM CMOS OR TTL LOGIC
Figure 3
Figure 4
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