ISD1110 ISD1110/ISD1420 series single-chip recording and playback time is 8 to 20 seconds, with good sound quality. The chip adopts CMOS technology, including oscillator, microphone preamplifier, automatic gain control, anti-aliasing filter, smoothing filter, speaker driver and EEPROM array. The smallest recording and playback system only needs microphone, speaker, two buttons, power supply and a few resistors and capacitors. After the recording and playback operation is completed, the chip automatically enters low power consumption mode, and the power consumption is only 0.5uA.
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