PCM1739E/2K

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Data acquisition is an important field where analog to digital conversion is needed as well as digital to analog conversion. One such device that is used for this purpose is the PCM1739E/2K. This device is a 2-channel ADC/DAC that incorporates high-speed, low-noise performance in the same chip.

The PCM1739E/2K is a 16 bit, 2 channel ADC/DAC that operates at a maximum of 1.6 GHz. It features a differential input and output, a selectable mode which enables it to be used in either ADC or DAC mode. The device is able to produce a resolution of 16bits when operated in either ADC or DAC mode. It also has an I2S interface for easy integration into a system.

The PCM1739E/2K has a wide operating temperature range from -40 to 105 °C and is designed to operate from an LVCMOS or a DC voltage that is variable from 2.7 to 4.5 V. It has a channel-to-channel isolation of over 40 dB and can handle input signals up to 6 V p-p. It also has a low-power criterion of 2.9 mW

In terms of applications, the PCM1739E/2K is most commonly used in high-speed digital audio applications such as audio synthesizers, portable sound systems, digital TVs and multimedia devices. Its wide operating temperature range and low power consumption make it suitable for embedded applications as well. It can also be used in audio signal analysis, digital signal processing and signal conditioning applications.

The working principle of the PCM1739E/2K depends upon its mode of operation. When operating in ADC mode, the device converts incoming analog signal into digital signal while in DAC mode, it converts incoming digital signal into an analog signal. In both cases, the device receives input signals from the channels and converts them to the appropriate signal format. The conversion is handled by combining sigma-delta modulator, down-sampler and digital filter. The device also offers sample-and-hold and programmable gain stage for increased dynamic range in the output signal.

In conclusion, the PCM1739E/2K is a powerful, high-performance device that can be used for data acquisition tasks. It is designed to be used in both ADC and DAC modes and is suitable for many applications such as audio signal analysis, signal conditioning, and digital signal processing. The device is also capable of handling input signals up to 6V p-p and features a low-power criterion of 2.9 mW. It operates over a wide temperature range, making it suitable for embedded applications, and has a channel-to-channel isolation of over 40 dB.

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