ISD1420PY

Series:	ChipCorder®
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Interface:	Pushbutton
Moisture Sensitivity Level (MSL):	--
Input Signal:	Analog - Single Ended, Microphone
Output Signal:	PWM Speaker Output
Sampling Frequency:	6.4kHz
Duration:	20 Sec
Filter Pass Band:	2.6kHz
Messaging:	Multiple
Oscillator Type:	Internal
Features:	Automatic Gain Control
Operating Temperature:	0°C ~ 70°C (TA)
Voltage - Supply:	4.5V ~ 5.5V
Mounting Type:	Through Hole
Package / Case:	28-DIP (0.600", 15.24mm)
Supplier Device Package:	28-PDIP

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Introduction

The ISD1420PY is a single-chip voice recording and playback integrated circuit (IC) developed by ISD Corporation. This IC enables cost-effective integration of seemingly complex and expensive speech applications into consumer and industrial electronics. The ISD1420PY provides an efficient and effective solution for recording and playback of various types of speech, such as telephone, voice mail, language learning, voice commands, voice message systems, sound effects and more.

Features

The ISD1420PY is a single-chip solution designed with some advanced features that make it an attractive choice for speech-enabled applications. ●The ISD1420PY integrates an 8-bit microcontroller CPU, 16K of program memory, 1K of RAM, a 256K bit of non-volatile storage and SRAM storage, a serial interface, a shift register and a voice-integrated amplifier, all on a single chip. ●It has the capability to recognize 6 specific tones. This feature is useful in developing speech-based media players, answering machines, speaker identification and other similar applications. ●It has the ability to support up to 32 seconds of high-definition recording time. This allows for longer recordings as well as higher quality playback. ●The IC is complete with a very flexible input/output port, allowing for different connection options such as mono, stereo, microphone and line inputs. ●The ISD1420PY offers very low power consumption, which makes it an ideal choice for applications where long battery life is desired.

Applications

The ISD1420PY is a suitable choice for a wide range of applications. Its features, such as low power consumption, high-definition recording time and the ability to recognize different tones make it ideal for speech-enabled devices. The integration of the IC into applications such as voice mail, answering machines, language learning, voice commands, voice message systems, sound effects devices and media players are just a few examples. It can also be used as a controller chip for hands-free car kits, navigation systems, door entry systems and other such applications.

Working Principle

The working principle of the ISD1420PY is simple. It is a complete single-chip solution for recording and playback of audio signals. It contains an 8-bit microcontroller CPU, 16K of program memory, 1K of RAM, a 256K bit of non-volatile storage and SRAM storage, a serial interface, a shift register, and a voice-integrated amplifier. The integrated amplifier serves as a buffer between the microphone input and the chip itself. The microcontroller is used to control the recording and playback functionality of the chip. The chip receives signals through its input/output port that is connected to either a microphone or line input. The signal is then amplified and converted into digital format by the microcontroller, and is stored in its internal RAM. When the chip is in playback mode, the signal stored in the RAM is retrieved and converted back to an analog signal. The signal is then amplified and outputted through the output port.

Conclusion

The ISD1420PY is a cost-effective solution for speech-enabled applications that require a longer recording time and high-definition playback. Its low power consumption makes it an ideal choice for battery-powered applications, and its various features make it a great choice for a wide range of applications including voice mail, answering machines, voice commands, language learning, sound effects, media players and more.

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