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VP1000A is a single segment sound recording and playback chip. The chip contains both a DAC and an ADC. It
can be interfaced with external SRAM for recording designs, or external EPROM for playback only applications. Memory addressing is handled by the chip itself. No microprocessor control is needed. Simple logic pulses are used to
start/stop the recording/playback operation. A basic design can be constructed with the chip and a few more components.
VP1000A employs the Continuously Variable Slope Delta (CVSD) compression technique with variable
sampling rates from 24 to 128 Kbps. Samping clock can be generated internally with a simple R/C network, or an external clock can be used. Operated with a single 5V supply, VP1000A is a low power device suitable for battery
operated applications.
For EPROM based designs (playback only), VP880 QuikVoice Development System must be used for sound development. VP880 is a computer based sound digitization, editing and management system. After
the sound is developed, it is programmed into EPROM chips with a standard EPROM programmer. Eletech also provides sound development and programming service to customers who do not want to do it themselves.
Applications
* Voice memo recorder
* Sound effects generator
* Gaming, vending and amusement equipment
* Industrial controls
* Security alarms
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