UTC31001 CIRCUIT LINEAR INTEGRATED TELEPHONE TONE RINGER GENERAL DESCRIPTION The UTC 31001 is a bipolar integrated circuit designed for telephone bell replacement. It can also be used as alarms or other alerting devices. FEATURES *Designed for telephone bell replacement. *Low current drain for multiple extention of lines. *Adjustable 2-frequency tone. *Adjustable warbling rate. *Bulit-in hysteresis prevents false triggering and rotary dial 'CHIRPS'. *Programmable for initiation voltage by simple external resistor DIP-8 BLOCK DIAGRAM R2 4 3 C2 1 R3 C3 7 6 HIGH OSC LOW OSC AMP 8 OUTPUT POWER SUPPLY (WITH HYSTERESIS) 5 Note:R2,R3,C2 and C3 are parts 2 externally mounted ABSOLUTE MAXIMUM RATINGS(Ta=25°C ) CHARACTERISTIC Supply Voltage Power Dissipation Operating Temperature Storage Temperature UTC 1 SYMBOL Vcc Pd Topr Tstg VALUE UNIT 30 400 -45 to 85 -65 to 150 V mW UNISONIC TECHNOLOGIES CO. LTD °C °C UTC31001 CIRCUIT LINEAR INTEGRATED ELECTRICAL CHARACTERISTICS( Ta=25°C ) (All voltage referenced to GND unless otherwise specified) CHARACTERISTIC SYMBOL Operating Supply Voltage Initiation Supply Voltage (note 1) Initiation Supply Current (note 1) Sustaining Voltage (note 2) Sustaining Current (note 2) Output Voltage High Vcc Vsi Isi Vsus Isus VOH Output Voltage Low VOL IIN(Pin3) IIN(pin7) High Frequency 1 High Frequency 2 Low Frequency TEST CONDITION MIN See Fig.2 6.8K-Pin 2 to GND See Fig.2 No Load Vcc=Vsus,See Fig.2 Vcc=21V, I8=-15mA Pin6=6V, Pin7=GND Vcc=21V, I8=15mA Pin6=GND, Pin7=6V Pin3=6V, Pin4=GND Pin7=6V, Pin6=GND R3=191K, C3=6800pF R3=191K, C3=6800pF R2=165K, C2=0.47µF FH1 FH2 FL 17 1.4 9.7 0.7 17.0 461 576 9.0 TYP. MAX UNIT 19 3.5 11.0 1.4 19.0 29.0 21 4.2 12.0 2.5 21.0 V V mA V mA V 1.6 V 500 500 563 704 11.0 nA nA Hz Hz Hz 512 640 10 *NOTE (See electrical characteristics sheet) 1. Initiation supply voltage (Vsi) is the supply voltage required to start the tone ringer oscillating. 2. Sustaining voltage (Vsus) is the supply voltage required to maintain oscillation. Circuit Current-Supply Voltage (No Load) Supply Current Vs. Supply Voltage (No Load) 8.5 4.0 7.5 Supply Current (mA) Icc(mA),Supply Current 3.5 3.0 2.5 2.0 1.5 6.5 5.5 4.5 A:RSL=5K 3.5 B:RSL=6.8K 2.5 C:RSL=13K 1.0 1.5 0.5 0.5 2 6 10 14 18 22 26 Vcc(V),Supply voltage Fig.2 UTC 2 30 34 2 6 10 14 18 22 26 30 Vcc(V),Supply voltage Fig. 3 UNISONIC TECHNOLOGIES CO. LTD 34 UTC31001 CIRCUIT LINEAR INTEGRATED APPLICATION CIRCUIT TIP C1 0.9 µF R1 560Ω C5 0.22µF 1 8 2 7 10k 5.6k - 1 M RING 3 C4 22 µF/35V UTC 31001 6 C3 6.9nF+-5% R2 4 D1 29V R3 191k+-1% SP 5 165k+-1% C2 0.47µF+-5% 15k Fig.4 UTC 3 UNISONIC TECHNOLOGIES CO. LTD 1300:8 Ω