IL2418 IKSEMICON | Alldatasheet
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Technical content
2011, March, Rev. 01 Telephone Tone Ringer with Bridge Diode The IL2418 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 (f R) alternating with a low frequency (f L) resul ting 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 IL2418 IL2418N Plastic DIP IL2418D/DT SOIC PIN ASSIGNMENT BLOCK DIAGRAM
ORDERING INFORMATION
Temperature Range Package Packing IL2418N TA = -40 to 70 C DIP8 Tube IL2418D SOP8 Tube IL2418DT SOP8 Tape & Reel
2011, March, Rev. 01 MAXIMUM RATINGS* (TA = 25C) Symbol Parameter Value Unit VTP Calling Voltage (f = 50 Hz) Continuous 120 Vrms VTP Calling Voltage (f = 50 Hz) 5 Sec ON/10 Sec OFF 200 Vrms ICC Supply Current 22 mA Tstg Storage and Junction Temperature -60 to +125 C * Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. RECOMMENDED OPERATING CONDITIONS Symbol Parameter Min Max Unit VCC Supply Voltage 26 V TA Operating Temperature -40 +70 C This device contains protection circ uitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, V IN and V OUT 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 V CC). Unused outputs must be left open. ELECTRICAL CHARACTERISTICS (TA = 25C) Symbol Parameter Test Conditions Guaranteed Limits Unit Min Max ICC Current Consumption without Load VS=8.8 to 26 V 1.8 mA VON Activiation Voltage 12.2 13 V VONR Activiation Voltage Range RA = 1 K 8 10 V VSUS Sustaining Voltage 8 8.8 V RD Differential Resistance in Off Condition VTIP = 8.0 V VRING = 0 V 6.4 3500 K VOUT Output Voltage Swing VS = 26 V, VSRC = 8.0 V, VOFR = 8.0 V 21 25.5 V IOUT Short Circuit Current VS = 26 V 30 80 mA
2011, March, Rev. 01 AC CHARACTERISTICS Symbol Parameter Test Conditions Guaranteed Limits Unit Min Max fH1 fH2 Output Frequencies fH1 fH2 VCC = 26 V, R1 = 14 K VSCR = 0 V V SCR = 6 V 1960 1420 2570 1840 Hz Hz fH Range max VCC = 26 V, R1 = 1.7 K, VSCR = 0 V
14 KHz
fH Range min VCC = 26 V, R1 = 27 K, VSCR = 6.0 V
0.11 KHz
fL Sweep Frequency VCC = 26 V, C1 = 100 nF 7.0 13.0 Hz TEST AND APPLICATION CIRCUIT RING TIP 1 F, 250VAC 2.2 K 10 F 0.22 F 100nF 14K 10K 10K Ra VOUT I 2418LTEL LINE VS Piezo 1300:8 1 2 3 4 f1 = 3.22 104 / R1 (K); f2 = 5/7 f1; fsweep = 1000 / C1(nF)
DESCRIPTION
The IL2418 tone ringer derives its power supply by rectifying the AC ringing signal. It uses this p ower to activate two tone generators. The two tone frequencies generated are switched by internal oscillator in a fast sequence and made audible across an output amplifier in the loudspeaker; both tone frequencies and the switching frequency can be externally adjusted. The device can drive either directly a piezo ceramic converter (buzzer) or small loudspeaker. In case of using a loud-speaker, a transformer is needed. An internal shunt voltage regulator provides DC voltage to the output stage, low frequency oscillator, and high frequency oscillator. To protect the IC from telephone line transients, a zener Diode is included.
2011, March, Rev. 01 N SUFFIX PLASTIC DIP (MS – 001BA) Symbol MIN MAX A 8.51 10.16 B 6.10 7.11 C 5.33 D 0.36 0.56 F 1.14 1.78 G H J 0° 10° K 2.92 3.81 NOTE S: L 7.62 8.26 1. Dimensions “A”, “B” do not include mold flash or protrusions. M 0.20 0.36 Maximum mold flash or protrusions 0.25 mm (0.010) per side. N 0.38 D SUFFIX SOIC (MS - 012AA) Symbol MIN MAX A 4.80 5.00 B 3.80 4.00 C 1.35 1.75 D 0.33 0.51 F 0.40 1.27 G H J 0° 8° NOTE S: K 0.10 0.25 1. Dimensions A and B do not include mold flash or protrusion. M 0.19 0.25 1.27 5.72 Dimension, mm Dimension, mm 2.54 7.62 A BH C K C M J F M P G D R x 45 SEA TING PLANE 0.25 (0.010) M T -T- L H M J A B F G D SEATING PLANE N K 0.25 (0.010) M T -T- C