With this advanced digital audio recorder/player, you can record up to 120 seconds of speech or any other audio with the built-in microphone and later play it back anytime. This unique design is made possible through the ISD25xx series of Integrated Circuits which store voice and audio signals directly, in their analog form, into a 480K Cell Nonvolatile Analog Storage EEPROM requiring neither analog-to-digital nor digital-to-analog converter. Recordings stored in this non-volatile memory cell last up to 100 years and therefore even if the supply voltage is disconnected, the recording will not be lost. Another unique feature of this circuit is a message looping mode of operation which continuously plays back the recorded message automatically. The circuit also incorporates a built-in audio amplifier so it can be directly connected to a speaker or connected to a power amplifier such as our UK151 for greater output power.Some applications for this circuit include:<LI>Doorbell or entrance message. Greet your guests or customers with a welcome message.<LI> "Watchdog" burglar alarm system. Record the barking of a dog and connect this circuit to a alarm system to deter burglars.<LI>Toys applications where you need speech or audio effects.<LI>Talking picture frames for personal or museum use. Add it to the back of a picture frame of a friend or relative to have his or her voice be played back at any time.<LI>With the looping mode of operation, you can connect the circuit to one of our FM Transmitters in order to build a FM Anouncement System or takling sign which is ideal for real estate applications.
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