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Details, datasheet, quote on part number:ZSD100
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Datasheet text preview:
AUTOMOTIVE AND HOUSEHOLD SECURITY SIREN DRIVER
ISSUE 6 JANUARY 1998 INTROD UCTI O N
The ZSD100 is a frequency swept alarm signal generator designed specifically for s t a t i c and automotive security alarm s y s t e m s . On e Z S D 1 0 0 , t w o t i m i n g capacitors, an in-expensive TO92 darlington, piezo transducer and coupling transformer is all that is necessary to produce an ear piercing 120 dB alarm siren. I n c l u d i n g an audio frequency signal generator, low frequency sweep generator, disable circuitry and output driver stages, t h e ZSD100 provides every function necessa ry to produce a standard alarm signal. Available in either an 8 pin DIL or SO package the IC gives a low cost compact solution to siren signal generation. The device operates from supplies of 4V up to 18V and is ideal for security alarms in battery powered applications, burglar alarms and automotive anti theft systems.
ZSD100
F EATURES
· · · · · · · · · ·
4-18V Operating voltage range. Small external component count. Direct drive of darlington, mosfet and IGBT output stages. Single ended or push-pull output stages. Suitable for automotive and static alarm systems. Low supply current - 10mA operating - 1µA sleep mode Low cost 8 pin DIL & SO packages. User selected audio and sweep frequencies. -40°C to 125°C operating temperature range. Choice of modulation waveform.
SCHEMATIC DIAGRAM
R T (INT) RT
C MOD SAW
Low Frequency Oscillator Output Driver Control Voltage Audio Voltage Controlled Oscillator Oscillator Output C OUT Q Q
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ZSD100
FUNCTIONAL DESCRIPTION
The audio signal of the ZSD100 is generated using a squarewave oscillator whose output is capable of directly driving a wide range of output circuits. To produce a characteristic alarm siren sound, the frequency of the audio oscillator is swept over a fixed 2:1 range by a second, low frequency oscillator. The freqencies of both oscillators are controlled by RT(INT) and capacitors CMOD and COUT .
R T (INT) RT
C MOD SAW
Low Frequency Oscillator Output Driver Control Voltage Audio Voltage Controlled Oscillator Oscillator Output C OUT Q Q
PIN DESCRIPTIONS
1. RT Optional external resistor for improved frequency control. An external resistor improves the control of both the modulating and output oscillators. The RT pin is also used to power the device down. Either connecting RT to VCC or an open circuit will result in the device being disabled. Selection of modulation waveform is made using the SAW pin. An open circuit produces a triangle wave, sawtooth is achieved by connecting SAW to the CMOD pin. An external capacitor is used to program the low frequency modulating oscillator. The value of CMOD recommended is between 0.1µF and 100µF.
2.
SAW
3.
CMOD
4. 5.
GND COUT An external capacitor is used to program the output oscillator. The value of COUT recommended is between 1nF and 100nF. Non inverted output driver Inverted output driver
6. 7. 8.
Q Q VCC
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ZSD100
ABSOLUTE MAXIMUM RATING
Vcc Operating Temperature Storage Temperature -0.5V to +20V -40 to 125°C -65 to 150°C Power Dissipation (Tamb=25°C) SO8 DIL8 625mW 625mW
ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated):Tamb=25°C, VCC=12V
PARAMETER SYMBOL MIN. 4V TYP. MAX. 18V CONDITIONS.
Supply Voltage Operating VCC Range Supply Current Disabled Enabled Modulating Oscillator Frequency Range
Frequency Value See Note 1 ICC
1µA 25mA
RT O/C, VCC=18V RT, Q, Q at Gnd, VCC=18V
FMOD FMOD
0.1Hz 3.3Hz 5.1Hz 4.3Hz 5.5Hz
10Hz 5.4Hz 5.9Hz
VCC=4 to 18V RT=0, CMOD=10µF RT=470k, CMOD=1µF
Output Oscillator Frequency Range
FOUT
100Hz 1.01kHz
10kHz
VCC=4 to 18V
Centre Frequency ( Note 2) FOUT FOUT Deviation Duty Cycle
1.26kHz 1.58kHz RT=0, COUT=22nF ±33% 55% 49%
Output Source Current Sink Current Open Circuit Voltage
ISOURCE 5mA 0.5mA ISINK VOUT(HIGH) VCC-1.5V VOUT(LOW)
0.5V
VOUT=1.4V VOUT=1.4V IOUT=100µA ISINK=0.1µA
Frequency Control Components Internal Resistor External Resistor Modulation Capacitor Output Capacitor
Note 1. Note 2.
RT (INT) RT (EXT) CMOD COUT
61.5k 0 0.1µF 1nF
1M 100µF 100nF CMOD in µF, RT (EXT) in k COUT in µF, RT (EXT) in k
2850 Hz CMOD(61.5+RT (EXT) ) 1710 FOUT = Hz COUT(61.5+RT (EXT) )
FMOD =
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