ISD1790EY

ISD1790EY is an integrated one chip voice record and playback device. It integrates microphone amplifier, analog-to-digital converter (ADC), digital signal processor (DSP), memory interface, and audio power amplifier on the chip. With its audio processing functions, ISD1790EY can not only record but also playback a variety of audio signals. That makes ISD1790EY suitable for a wide range of applications in the consumer electronics industry.

The figure below is a simplified block diagram of the ISD1790EY chip. The ISD1790EY contains a microphone amplifier and ADC which convert the analog signal from microphone into a digital signal. The microcontroller is connected to the ISD1790EY and is used to control the device and process the received digital audio. The DSP receives the digital signal output from the ADC and performs digital processing functions such as signal compression, signal equalization and signal analysis. The memory interface provides the ISD1790EY with the necessary memory to store the digital audio data. The audio power amplifier is used to convert the digital audio signal output from the DSP into an analog signal, which can then be played through speakers.

The ISD1790EY voice record and playback device has a variety of application fields. It can be used in a wide range of consumer electronic products, such as portable audio players, digital voice recorders, radios, portable phones and multimedia products. It is also used in various industrial and educational applications, such as security systems and intelligent toys. In addition, the ISD1790EY can be used in automotive applications such as car audio systems, navigation systems and hands-free devices. The ISD1790EY has also been used in medical, industrial and commercial applications.

ISD1790EY has a number of working principles. The digital signal processor is used to process the digital signal received from the microphone amplifier and ADC. The signal is digitized and stored in the memory. The DSP can then process the signal, such as signal compression, signal equalization and signal analysis. Once the signal has been processed, it can then be played back through the audio power amplifier and speakers. The ISD1790EY also has a number of power-saving features, such as low power modes and sleep modes, which allow the device to save energy when not in use.

In conclusion, ISD1790EY is an integrated one-chip voice record and playback device which has a variety of application fields and working principles. It is used in a wide range of consumer electronic products, as well as in industrial, educational, automotive, medical and commercial applications. With its audio processing functions, the ISD1790EY can record and playback digital audio signals. It also has a number of power-saving features which make it a very capable voice recording and playback device.