≪ P style="a; Padding: 0px; Line height: 16px; Font family: arial, Helvetica, sans serif; Font size: 12px; Background color: # ffffff; Margin top: 0px; Margin bottom: 10px& Quota& Gt; AD9957 can be used as a universal I/Q modulator and agile up converter, suitable for communication systems where cost, size, power consumption, and dynamic performance are key factors. It integrates a high-speed direct digital frequency synthesizer (DDS), a high-performance, high-speed 14 bit to analog converter (DAC), a clock multiplier circuit, digital filters, and other DSP functions on a single chip, providing baseband up conversion for data transmission in wired or wireless communication systems& Lt/ P>& Lt; P style="a; Padding: 0px; Line height: 16px; Font family: arial, Helvetica, sans serif; Font size: 12px; Background color: # ffffff; Margin top: 0px; Margin bottom: 10px& Quota& Gt; AD9957 is the third device in the Orthogonal Digital Upconverter (QDUC) series, with the other two devices being AD9857 and AD9856. Its working speed, power consumption, and spectral performance have all been improved. Unlike the previous two products, it supports a 16 bit serial input mode that can be used for I/Q baseband data. Alternatively, this device can also be programmed as a single tone sine source or interpolated DAC& Lt/ P>& Lt; P style="a; Padding: 0px; Line height: 16px; Font family: arial, Helvetica, sans serif; Font size: 12px; Background color: # ffffff; Margin top: 0px; Margin bottom: 10px& Quota& Gt; The reference clock input circuit contains a crystal oscillator, a high-speed binary input, and a low-noise phase-locked loop (PLL), which is used to multiply the reference clock frequency& Lt/ P>& Lt; P style="a; Padding: 0px; Line height: 16px; Font family: arial, Helvetica, sans serif; Font size: 12px; Background-