The CBM99D57BQ is a Direct Digital Synthesis (DDS) TQFP-100 RoHS device manufactured by Corebai Microelectronics. It is an integrated circuit and quantifies and phase locks analog signals into a two-way digital signal. The DDS contains a flexible frequency synthesizer, input/output section and amplitude-modulated digital-to-analog converters. This device has high-resolution modulation, high-speed input/output serial wave output, and wide-range programmable clock output. It has low noise, high-accuracy phase and frequency stability, and programmable analog output. It is ideal for use in telecommunications, medical imaging, communications, industrial systems,base transceiver station and other applications.