ADS7807UBG4

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Data acquisition systems contain several different components. One such type of component is an analog to digital converter (ADC). An ADC takes an analog voltage, such as the voltage generated by a microphone, and converts it into a digital number that can be used to represent the voltage and stored in a digital system or manipulated by a digital processor. The ADS7807UBG4 is a high resolution, low power, successive-approximation, multiplexed, analog to digital converter from Texas Instruments.

The ADS7807UBG4 is a 16-bit, complete Unity Gain Stereo audio ADC with an integrated voltage reference and a serial I2C port. This device delivers an outstanding 92 dB signal-to-noise ratio (SNR) and 120 dB total harmonic distortion plus noise (THD+N), reducing current consumption without sacrificing sound quality. The integrated voltage reference renders accuracy of 96 dB SNR. ADS7807UBG4 is useful for line-level and microphone inputs, designed for portable audio applications. Different from the conventional ADC, the new product has different SNR, THD+N, and power consumption/performance ratios, which are making it as an ideal choice compared to competitive products.

The ADS7807UBG4 can be used in a variety of applications, such as audio playback, recording, headset, and soundbar. In audio playback applications, the ADS7807UBG4 can be used to reproduce sound from digital sources such as CD players and digital music players. In recording applications, the device can convert an analog signal, such as an instrument or a microphone, into a digital signal. Additionally, due to its low power consumption, the product is suitable for headset and soundbar, where longer battery life is required.

The ADS7807UBG4 uses the successive-approximation register (SAR) architecture, the simplest and most widely used kind of DAC. SAR works by setting a sequence of voltage values that are compared to the input analog voltage until the value closest to the input is found. This allows for higher resolutions with lower power consumption than other conversion methods. The analog signal arrives at the input register, which is converted to a digital signal, then fed to the successive-approximation register. The SAR will take this signal, evaluate it against a series of predetermined reference voltages, and then determine the closest match. The result is transferred to the DAC, which converts the digital signal back into an analog voltage.

In addition to its excellent audio performance, the ADS7807UBG4 also provides an SPI compatible serial interface for programming. Its low latency allows for a rapid response, and its wide supply voltage range makes it suitable for a variety of applications. The product is rated to operate over a –40°C to 85°C temperature range, and its advanced power management system allows it to reduce power consumption during operation.

In summary, the Texas Instruments ADS7807UBG4 is a high resolution, low power, successive-approximation, multiplexed, analog to digital converter suitable for use in audio playback, recording, headsets, and soundbars. It provides excellent audio performance due to its high signal-to-noise ratio, low power consumption, and SPI compatible serial interface. It also has a wide supply voltage range that allows it to operate in extreme temperatures, making it an excellent choice for a variety of applications.

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