PCM1718EG4

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The PCM1718EG4 is an audio/communication IC specifically designed for applications including data converters, audio playback/recording, short range line-of-sight wireless communication and software defined radio. This device offers a high level of integration, which simplifies the system design and reduces cost.

It includes an array of functions such as an 8-channel digital-to-analog converter (DAC), stereo analog-to-digital converter (ADC), audio codec, and I/O buffers. It also features a configurable digital signal processor (DSP) with programmable sample rate conversion (SRC). These features let the PCM1718EG4 provide a wide range of applications, especially in professional audio and communication.

Application Field

The PCM1718EG4 is suitable for a wide range of audio applications. It can be used for applications such as digital audio recorders, multichannel digital audio systems, professional audio equipment, digital mixing consoles, portable multimedia players, and audio encoding systems. It is also suitable for telecommunication applications such as voice over IP phones, base stations, radios, and modems.

Working Principle

At its core, the PCM1718EG4 consists of two main components: the ADC and the DAC. The ADC is responsible for converting analog audio signals into a digital format, while the DAC takes digital audio data and converts it into analog. The PCM1718EG4 also features a modulation/demodulation section and a configurable DSP with programmable SRC.

The ADC operates in one of two modes: delta-sigma or multi-bit. In delta-sigma mode, the PCM1718EG4 samples the audio signal at the sample rate and converts it into the digital bitstream. In multi-bit mode, the PCM1718EG4 samples the audio signal at several different points along the signal path, and then it uses digital filtering techniques to convert the signal into the digital bitstream. The ADC also provides adjustable input gain, low-latency operation, and adjustable noise shaping.

The DAC, on the other hand, is responsible for converting the digital audio data into an analog signal. The PCM1718EG4 takes the digital audio data, filters it, and then converts it into an analog signal. The DAC also features a digital volume control, adjustable output gain, and adjustable output polarity.

The modulation/demodulation section is responsible for converting analog audio signals into a digital format and vice versa. This is done using algorithms such as carriers and equalizers. This section also provides adjustable impulse response and pre-emphasis, as well as adjustable performance parameters and modulation format.

The configurable DSP is the main component of the PCM1718EG4. It is responsible for performing sample rate conversion and other signal processing tasks. The DSP is programmable, which means that users can customize it to suit their needs. The DSP also offers adjustable filter characteristics, adjustable burst rates, and adjustable output gain.

The PCM1718EG4 is a highly integrated audio/communication IC that can be used for a wide range of applications. Its advanced features make it ideal for professional audio and communication applications. Its ADC and DAC components provide high-quality audio, while its configurable DSP allows users to customize the device to suit their needs.

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