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Rato |
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.
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