ISD4004-10MPY

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The ISD4004-10MPY, also known as an Isolated 8-pin IC, is a single-chip Voice Record and Playback device intended for high-density PC board integration. This device is ideal for integration into applications that require a low power, high fidelity audio solution.

The Voice Recording and Playback capabilities of the ISD4004-10MPY are based on Time-Domain Multiplex (TDM) technology for analog-to-digital (A/D) and digital-to-analog (D/A) conversion. This feature-set is packaged in a single 16-pin or 8-pin device, depending on horizontal or vertical mount requirements.

Applications that require audio or voice recording and playback are ideal candidates for integration of the ISD4004-10MPY. Applications include security and surveillance, medical device controls and speech recognition. Voice-operated toys, voice messaging systems, voice-activated switches and voice recognition devices are also excellent applications for this chip.

The ISD4004-10MPY provides stand-alone recording and playback with external control over record, play and stop functions. The chip is controlled by four control pins and can be interfaced with microprocessors and other control logic using simple transistor switching circuits.

The ISD4004-10MPY includes an embedded microphone preamplifier with adjustable sensitivity and a unique feature set that includes dynamic gain control, a headphone driver, random access address and the ability to play back stereo (left and right) audio signals.

To record, the user interacts with the ISD4004-10MPY and begins speaking into the microphone. The dynamic gain control adjusts the microphone sensitivity to compensate for different talker volumes and creates a portion of the audio signal and stores it in the chip\'s memory. Once the user has finished speaking and the recording is complete, the recording can then be played back with the aid of the headphone driver.

The ISD4004-10MPY has broad dynamic range and low distortion allowing for optimal playback of low-level signals. The recorded audio is stored in a non-volatile memory and protected from power down conditions. A random access address control also allows the user to play back specific portions of the recorded audio.

The ISD4004-10MPY is a versatile, low-power audio solution suitable for a variety of voice record and playback applications. It offers reliable, high-fidelity audio playback and allows the user to easily integrate it into existing applications. This chip is ideal for applications that require the simplicity of voice recording and playback without the need of sophisticated external hardware.

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