UTC TA31001 LINEAR INTEGRATED CIRCUIT TELEPHONE TONE RINGER DESCRIPTION The UTC TA31001 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 extension of lines. *Adjustable 2-frequency tone. *Adjustable warbling rate. *Built-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 2 Note:R2,R3,C2 and C3 are parts externally mounted UTC UNISONIC TECHNOLOGIES CO. LTD 1 QW-R108-003,A UTC TA31001 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS(Ta=25°C ) PARAMETER SYMBOL Supply Voltage Power Dissipation Operating Temperature Storage Temperature Vcc Pd Topr Tstg VALUE UNIT 30 400 -45 to 85 -65 to 150 V mW °C °C ELECTRICAL CHARACTERISTICS( Ta=25°C ) (All voltage referenced to GND unless otherwise specified) PARAMETER 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(Pin 3) IIN(Pin 7) High Frequency 1 High Frequency 2 Low Frequency FH1 FH2 FL TEST CONDITIONS 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 17 1.4 9.7 0.7 17.0 461 576 9 TYP MAX UNIT 19 3.5 11 1.4 19 29 21 4.2 12 2.5 21 V V mA V mA V 1.6 V 500 500 563 704 11 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 Supply Current (mA) Icc(mA),Supply Current 7.5 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. 1 UTC 30 34 2 6 10 14 18 22 26 30 34 Vcc(V),Supply voltage Fig. 2 UNISONIC TECHNOLOGIES CO. LTD 2 QW-R108-003,A UTC TA31001 LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT TIP R1 C1 0.9 µF 560 Ω C5 0.22 µF 1 8 2 7 10k 5.6k - 1 M RING 3 C4 22 µF/35V UTC TA31001 6 C3 6.9nF+-5% R2 4 D1 29V R3 191k+-1% SP 5 165k+-1% C2 0.47 µF+-5% 15k 1300:8 Ω Fig. 3 UTC UNISONIC TECHNOLOGIES CO. LTD 3 QW-R108-003,A