Data rate bit-by-bit variable digital-to-analog conversion device and configuration method

Abstract

The invention discloses a data rate bit-by-bit variable digital-to-analog conversion device and a configuration method, and belongs to the technical field of digital-to-analog conversion. The device comprises a configuration unit, a digital-to-analog conversion unit, a clock unit, a power supply unit, and a table lookup unit, a storage unit, an operation unit and a parameter configuration unit which are realized in a software module form. The configuration unit is used for configuring the data rate clock of the analog-to-digital conversion unit to be rapidly switched within the stepping rangeof 1Hz and the range of 1MHz-125MHz. The digital-to-analog conversion unit outputs a required data rate clock according to the control instruction. The clock unit provides 8MHz and 50MHz reference clock sources for the configuration unit and the digital-to-analog conversion unit respectively. The power supply unit supplies required direct-current power to the configuration unit, the digital-to-analog conversion unit and the clock unit. The device has the advantages of being simple in hardware circuit, low in cost, simple in configuration algorithm structure, small in occupied resource and capable of achieving self-adaptive switching.

Description

technical field [0001] The invention relates to the technical field of digital-to-analog conversion, in particular to a digital-to-analog conversion device and a configuration method with variable data rate bit by bit. Background technique [0002] Faced with the situation of diversified functions, integrated functions, and miniaturized equipment in the field of mobile communication and satellite communication, the modem needs to integrate more functions under the premise of miniaturized equipment, especially a communication system that covers a wider range of data rates. The AD9361 RF Agile Transceiver encapsulates its signal chain in a software-configurable IC, and has been widely used in the communication field due to its configurability, low power consumption, and small size. At present, a bit-by-bit variable digital-to-analog conversion device based on a dedicated digital-to-analog conversion chip requires an additional clock management chip to provide a clock, which is...

AI Technical Summary

Problems solved by technology

At present, a digital-to-analog conversion device with a bit-by-bit variable data rate based on a dedicated digital-to-analog conversion chip requires an additional clock management chip to provide a clock, which is costly and complex in hardware circuits

However, for the digital-to-analog conversion device based on the AD9361 RF agile transceiver, once the data rate is switched, the parameter values ​​​​of the clock configuration function need to be recalculated according to its design restrictions, and adaptive configuration cannot be realized.

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