ISD17150EYI

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ISD17150EYI is an ultra-miniature simple and low cost （C）MOS integrated circuit designed for digital recording, playback, and erasing of a maximum of 10 seconds of information. This type of integrated circuit mainly functions as an interface between electronic systems and the world of sound, providing both the electronic and the audio engineer with the capacity to voice record and playback through digital audio formats.

ISD17150EYI has a very miniscule 8-pin form factor, allowing for device to be used in small and portable electronics or devices due to its very low power requirements for operation and its small size. The operating temperature range for ISD17150EYI is from -20℃ to 85℃. This integrated circuit is mainly used in kinds of fields like music recording, announcements, audio recognition and directive etc.

Working Principle

ISD17150EYI works clearvoice recorder and playback, operates by a combination of analog and digital signal processing. First of all, the ultra sensitive microphone gain is adjusted according to the external sound environment, then the signal is converted into a digital format. The IC will automatically adjust the gain to optimize data sampling and limiting. During Playback mode, the stored digital signal is retrieved from the internal memory, amplified and converted back to an analog signal using digital-to-analog converter, then the signal will be output from the speaker.

The IC also is featured with an 300kHz 4bit microcontroller for controlling the functions, contains an 8K EEPROM for nonvolatile data storage. The operating instruction is very easy. By setting one or several pins to predetermined voltage, the operations like REC /STOP, ERASE/STOP and PLAY /STOP can be performed. Additionally, once the microcontroller being setup, the recording status will be indicated by an output pin.

Applications

ISD17150EYI has a wide range of common applications in the field of voice recognition, announcement, and music playing. This device can function as a speech recognition system and a music player. For instance, it can be used in an automated doorbell program to recognize and identify different family members then play corresponding background music when they pull up; it can also be programmed to greet guests with a different prerecorded message each time.

With the ability to perform recording and playback independently, ISD17150EYI is hardware-friendly, contains a variety of easy-to-use interface commands for user to quickly program, control sound, and create audio effects such as delay, echo, chorus, and so forth. ISD17150EYI tends to have applications in both the entertainment and the commercial arena, providing another level of interactivity with audio, voice and sounds. In addition, with the miniscule size combined with its low power requirements, ISD17150EYI can easily find its way into a variety of applications, including smart toys, household appliances, health and fitness devices.

Conclusion

In conclusion, ISD17150EYI, an ultra miniature and low cost （C）MOS integrated circuit with a 8-pin form factor and a maximum of 10 seconds of recording duration, is a voice recording and playback integrated circuit. Its applications include voice recognition, announcements, music playing, doorbell programs, etc. Being hardware-friendly, programmable and capable of creating audio effects such as delay, echo, chorus and so forth, this chip is capable of adding a richer and deeper level of interaction with audio.

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