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Número de pieza | IL2410 | |
Descripción | Two-Tone Telephone Ringer | |
Fabricantes | IK Semiconductor | |
Logotipo | ||
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No Preview Available ! 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”)
1
1 page 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 1300Ω to 8Ω ransformer.
The output coupling capacitor C5 is required with transformer coupled loads.
When driving a piezo-ceramic transducer type load, the coupling C5 and transformer (1300Ω:8Ω) 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
5
5 Page |
Páginas | Total 7 Páginas | |
PDF Descargar | [ Datasheet IL2410.PDF ] |
Número de pieza | Descripción | Fabricantes |
IL2410 | Two-Tone Telephone Ringer | IK Semiconductor |
IL2411 | Tow-Tone Telephone Ringer | IK Semiconductor |
IL2418 | Telephone Tone Ringer with Bridge Diode | ETC |
IL2418 | Two-Tone Telephone Ringer | IK Semiconductor |
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