Rato RT0103 The RT0103 is a CMOS Design for single tone alarm sound application. The SOFT CHIRP only be generated within 200 seconds of the first sound. Pin Diagram Features Low Operating Voltage 2V ~ 5V CMOS process On-Chip RC oscillator Low stand by current 2 seconds SOFT CHIRP OSC2 OSC1 INI GND 1 2 3 4 8 7 6 5 SOFTB VCC BZ2 BZ1 RT0103 Pin Out And Description Symbol OSC2 OSC1 INI GND BZ1 BZ2 VCC SOFTB Description Oscillator pin Oscillator pin An internal pull-up resistor. Might disable BZ1, BZ2 when connected to GND. Ground Audio output Audio output Power Vcc = Single Tone Open = Single Tone with 2 seconds soft chirp. Electrical Characteristics Parameter Operating Voltage Stand-By Current Operating Current BZ1, BZ2 Driving Current Operating Frequency Symbol Vcc Isb Iop Ioh Iol Fop Min. 2.0 1.0 1.0 Pin 1 2 I/O I O 3 I 4 5 6 7 O O 8 I Vcc=3V , Temp.=25 Max. Unit Typ. V 3.0 5.0 uA 30 50 uA 300 500 mA mA KHz 128 Absolute Maximum Ratings Symbol Vcc Vi Vo Tst Ttp 2000.04.11 Parameter Supply Voltage Input Voltage Output Voltage Storage Temperature Operating Temperature Rating -0.3 ~ 6 -0.3 ~ Vcc +0.3 -0.3 ~ Vcc +0.3 -40 ~125 0 ~ 65 Unit V V V Single Tone Siren/Alarm Sound Generator with SOFT chirp 1