UNISONIC TECHNOLOGIES CO., LTD TA31002 LINEAR INTEGRATED CIRCUIT TELEPHONE TONE RINGER DESCRIPTION The UTC TA31002 is a bipolar integrated circuit designed for telephone bell replacement. It can also be used as alarms or other alerting devices. FEATURES *Current consumption is small. (at no-load) *Package is compaction. (DIP-8 pin) *Oscillation frequency is variable. *Built-in threshold circuits prevent false triggering due to power noise as well as “chirps” due to rotary dial. *Few external components. DIP-8 *Pb-free plating product number: TA31002L ORDERING INFORMATION Ordering Number Normal Lead Free Plating TA31002-D08-T TA31002L-D08-T Package Packing DIP-8 Tube TA31002L-D08-T (1)Packing Type (2)Package Type (3)Lead Plating www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Ltd (1) T: Tube (2) D08: DIP-8 (3) Lead Free Plating, Blank: Pb/Sn 1 of 4 QW-R108-004.B TA31002 LINEAR INTEGRATED CIRCUIT PIN CONFIGURATIONS Vcc 1 8 Output RSL 2 7 High Freq. Time Constant Low Freq. Time Constant 3 6 High Freq. Time Constant 4 5 GND Low Freq. Time Costant UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R108-004.B TA31002 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM R1 4 3 C1 R2 C2 6 HIGH OSC LOW OSC 1 7 AMP 8 OUTPUT POWER SUPPLY (WITH HYSTERESIS) 5 2 Note:R1,R2,C1 and C2 are parts externally mounted UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R108-004.B TA31002 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL RATINGS UNIT Power Supply Voltage VCC 30 V Power Dissipation PD 800 mW Operating Temperature TOPR -40 ~ +85 °C Storage Temperature TSTG -55 ~ +150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (Ta=25°C) (All voltage referenced to GND unless otherwise specified) PARAMETER Operating Voltage Initiation Supply Voltage Sustaining Supply Voltage Initiation Current Consumption Sustaining Current Consumption Oscillation Frequency (not3) SYMBOL VOPR Vsi Vsus Isi Isus Fl fH1 fH2 Output Voltage “H” Level VOH Output Voltage “L” Level VOL TEST CONDITIONS (note 1) (note 2) No-Load C1=0.47µF, R1=165kΩ C2=6800pF, R2=191kΩ Vcc=24V, VOH=-10mA PIN7=GND Vcc=24V, VOL=10mA PIN7=7V MIN TYP 19 12 3.3 1.4 10 512 640 MAX 29 21 4.2 2.5 11 563 703 UNIT V V V mA mA Hz Hz Hz 17 10.5 1.4 0.7 9 461 576 20.0 21.5 22.5 V 0.7 1.0 2.0 V *Note : 1. Initiation supply voltage (Vsi) is a supply voltage required to start oscillation of the tone ringer. 2. Sustaining supply voltage (Vsus) is a supply voltage required to maintain oscillation of the tone ringer. 3. Oscillation frequency is determined by the following equations 1, 2, and 3. (1) fL=1/1.234•R1•C1 (Hz) ; (2)fH1=1/1.515•R2•C2 (Hz); (3)fH2=1.24 fH1(Hz) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 6 QW-R108-004.B TA31002 LINEAR INTEGRATED CIRCUIT APPLICATION NOTE In the UTC TA31002 the initiation current consumption (Isi) can be changed by using the RSL terminal. The resistor RSL is connected to GND from PIN2 as shown in fig.1. Further, the initation current consumption (Isi) can be changed by changing the value of RSL. Fig.2 show the graph of Vs-Is characteristic at the time when RSL has been changed to three values. The Vs-Is characteristic in UTC TA31002 at the time when RSL=6.8kΩ coincides with that at the time when PIN2 of the TA31001 has been used at an open state. Vs LS 1 2 UTC TA31002 RSL 5 GND FIG.1 Current Consumption (mA) RSL =3.3kΩ RSL =6.8kΩ RSL =13kΩ Is 5 4 3 2 1 Vsus 10 Vsi 20 30 Vs Supply Voltage (V) FIG.2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R108-004.B TA31002 LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT TIP 1 µF/250V 2KΩ 104B42 0.22μF 1 8 2 7 RSL UTC TA31002 D5Z27 RING C4 15μF/35V + R2 3 6 4 5 C2 R1 - C1 61Ω SP 15kΩ 1300:8Ω fL=1/1.234R1*C1 fH1=1/1.515R2*C2 fH2=1.24fH1 when: R1=165KΩ R2=191KΩ C1=0.47µF/16V C2=0.0068µF/16V fL≅10Hz fH1≅500Hz fH2≅630Hz UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 6 QW-R108-004.B