ISD1740PYI01

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The ISD1740PYI01 is an integrated voice record and playback device integrated by ISD Technology Inc., especially suitable for low power and low cost voice record and playback applications. This device can be used in various applications, such as high volume audio systems, voice-recording telephones, alarm systems, digital recorders, and more. This product features an optimized architecture, a low-power recording, a wide operating temperature range, medium- to-high storage capacity, and a high accuracy audio playback coupled with an integrated microphone, speaker connection and jacks.

Application

The main applications of the ISD1740PYI01 include an alarm system with voice recording, automatic telephone line with answer machine and voice recorders, voice activated door-entry buzzer with voice reminders, voice command input for robots or automatic machines, voice activated personal assistants, and embedded speech synthesis.

The ISD1740PYI01 is also used in embedded car audio systems, educational toys, medical record and monitoring systems, medical sound measuring instruments, information call systems in hotels, time attendance systems for schools and factories, voice message systems for banks, employee attendance record systems, and message centers for telco companies.

Working Principle

The ISD1740PYI01 can record and playback audio signals. The recording and playback functions are controlled by a standard UART interface, via commands sent to the device. These commands control the recording and playback setting, like recording start, recording stop, play, pause, skip forward/skip backward, and repeat start/stop.

The ISD1740PYI01 is based on a CD-quality linear audio CODEC (codec = coder-decoder), which records and plays digital audio data. Audio data and commands are transmitted through either UART or I2C. The record and playback functions are controlled by software commands. Recorded audio data are stored in the on-chip FLASH memory. The recorded data is stored in a multi-track format, with separate audio streams for each track.

The ISD1740PYI01 can support up to 4 tracks of audio simultaneously, with each track capable of storing up to 4 minutes of high-quality audio data. The device also features an integrated microphone, speaker connection and multi-function jacks. The ISD1740PYI01 also features a low-power recording mode, a wide operating temperature range of -40 – 85°C, and a medium-to-high storage capacity.

The ISD1740PYI01 does not require extra components, as all required components are integrated in the IC itself. The device is also RoHS compliant, and is tested for safety and performance. The ISD1740PYI01 is developed for robust and reliable operation, with the aim for a long life span.

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