ISD1420SIR

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The ISD1420SIR is a powerful voice recorder and playback device specifically designed for applications requiring long duration audio recording and playback. The new chip offers potential applications in automotive, telephony and audio/video systems.

The ISD1420SIR consists of two distinct parts: the analog front-end and the digital back-end. The analog front-end features two devices: the preamplifier, which increases the gain of relatively weak signals and the equalizer, which normalizes the frequency range of signals. The digital back-end consists of the codec, which converts analog audio signals to digital data, and the controller, which acts as the command processor for the device. It is also capable of integrated non-volatile, serial EEPROM and SIR-based serial IR data communication.

The device is designed to work within various application fields. Its voice record and playback capabilities are suitable for use in automotive, telephony and audio/video systems. Its wide variety of interfaces (I2S Digital Audio, SPI Serial, UART serial, I2C serial and SIR serial) allow for easy integration into existing systems. The device has an integrated headphone amplifier and can be configured to perform different audio effects, including echo or reverb. An integrated oscillator guarantees flicker free and accurate synchronization in digital audio applications such as music players, digital audio recorders, or digital audio streaming from an embedded computer.

The ISD1420SIR works in the following way. It records speech or other sounds through an analog microphone input, and then converts them into digital data. The data is then encoded using the codec and stored on a non-volatile memory. To play back the stored sound, the device reverses the narration process. The data is decoded using the codec and then sent to an amplifier or a speaker. The device also has the capability to control the volume of the speaker output and add special audio effects, such as echo or reverb, to the playback.

In terms of power consumption, the chip has an active mode power consumption of 0.8mA at 3V and a standby mode power consumption of less than 0.1mA at 3V. This makes it a highly efficient and low-power device, making it suitable for both portable and battery-driven applications.

The ISD1420SIR is an ideal solution for applications requiring long duration audio recording and playback, including but not limited to automotive, telephony and audio/video systems. The device is easy to integrate into existing systems and offers a wide range of audio effects, as well as a low power consumption.

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