RT0105

Rato RATO Technology Inc., RT0105 SINGLE TONE SIREN/ALARM SOUND GENERATOR WITH SOFT CHIRP The RT0105 is a CMOS design for single tone alarm sound application. The SOFT CHIRP only be generated within 200ms of the first sound. FEATURES : 1. Auto Power down function. 2. Low Operating Voltage 3V~5V. 3. CMOS process. 4. On-chip RC oscillator. 5. Low stand by current. 6. 200 ms SOFT CHIRP PIN DIAGRAM OSC2 1 OSC1 2 T1 3 RT0105 8 SOFTB 7 VCC 6 BZ2 PIN OUT AND DESCRIPTION GND 4 Symbol Description OSC2 Oscillator pin OSC1 Oscillator pin T1 Test Pin GND Ground BZ1 Audio output BZ2 Audio output VCC Power SOFTB Vcc = Single Tone Open = Single Tone with 200 ms soft chirp. PIN 1 2 3 4 5 6 7 8 5 BZ1 I/P, O/P I/P O/P O/P O/P O/P I/P October 12, 1997 1 RATO Technology Inc. ELECTRICAL CHARACTERISTICS VCC=3V, Temp. =25°C Parameter Symbol Min. Typ. Max. Unit Operating Voltage VCC 3.0 4.0 5.0 V Stand-By Current Isb 50 60 uA Operating Current Iop 300 500 uA BZ1, BZ2 Ioh 1.0 mA Driving Current Iol 1.0 mA Operating Frequency Fop 128 K Hz ABSOLUTE MAXIMUM RATINGS Symbol Parameter Rating VCC Supply Voltage Vi Input Voltage Vo Output Voltage Tst Storage Temperature Ttp Operating Temperature APPLICATION CIRCUIT -0.3 ~ 6 -0.3 ~ Vcc+0.3 -0.3 ~ Vcc+0.3 -40 ~ 125 0 ~ 65 Unit V V V °C °C October 12, 1997 2 RATO Technology Inc. October 12, 1997 3 RATO Technology Inc. ...