Rato RT0105 The RT0105 is a CMOS Design for single tone alarm sound application. The SOFT CHIRP only be generated within 200ms of the first sound. Pin Diagram Features Low Operating Voltage 3V ~ 5V CMOS process On-Chip RC oscillator Low stand by current 200 ms SOFT CHIRP OSC2 OSC1 T1 GND 8 7 6 1 2 3 4 5 SOFTB VCC BZ2 BZ1 RT0105 Pin Description Symbol OSC2 OSC1 T1 GND BZ1 BZ2 VCC SOFTB Description Oscillator pin Oscillator pin Test Pin Ground Audio output Audio output Power Vcc=Single Tone Open=Single Tone with 200 ms 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. 3.0 1.0 1.0 Pin 1 2 3 4 5 6 7 8 I/O I O O O O I Vcc=3V , Temp.=25 Max. Unit Typ. V 4.0 5.0 uA 50 60 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