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ZSD100N8

Zetex Semiconductors
Part Number ZSD100N8
Manufacturer Zetex Semiconductors
Description AUTOMOTIVE AND HOUSEHOLD SECURITY SIREN DRIVER
Published Apr 17, 2005
Detailed Description AUTOMOTIVE AND HOUSEHOLD SECURITY SIREN DRIVER ISSUE 6 – JANUARY 1998 INTRODUCTION The ZSD100 is a frequency swept alarm...
Datasheet PDF File ZSD100N8 PDF File

ZSD100N8
ZSD100N8

Overview
AUTOMOTIVE AND HOUSEHOLD SECURITY SIREN DRIVER ISSUE 6 – JANUARY 1998 INTRODUCTION The ZSD100 is a frequency swept alarm signal generator designed specifically for static and automotive security alarm s y st e ms .
On e Z SD 1 0 0 , t w o t i mi 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.
Including an audio frequency signal generator, low frequency sweep generator, disable circuitry and output driver stages, the ZSD100 provides every function necessary 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 FEATURES • • • • • • • • • • 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 4-321 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 Oscillat...


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