Application of 16 bit 400MSPS digital to analog converter GX9783 benchmarking AD9783 in signal source

Signal generators/signal sources cover a variety of applications and are devices that can provide electrical signals of various frequencies, waveforms, and output levels. Used as a signal source or excitation source for testing the amplitude characteristics, frequency characteristics, transmission characteristics, and other electrical parameters of various telecommunications systems or equipment, as well as for measuring the characteristics and parameters of components.

In the core components of the signal source, the digital to analog converter is responsible for converting digital signals into high-quality analog signals. Guoxin Sichen‘s dual channel 16 bit 400MSPS high-performance digital to analog converter GX9783 is an ideal choice for high-end signal generator design. GX9783 has gain and offset compensation functions and can be connected to analog quadrature modulators. GX9783 not only supports Serial Peripheral Interface (SPI), but also provides some pin programming functions for applications without controllers.  

The GX9783 low noise and intermodulation distortion (IMD) enables high-quality synthesis of broadband signals, supports multiple output modes, enhances dynamic performance, and provides system flexibility and functional enhancement through programmable current output and dual auxiliary DAC. This makes the chip widely used in wireless infrastructure, broadband communication (point-to-point instrumentation), radio frequency (RF) signal generators, arbitrary waveform generators, and other application fields.

Main performance introduction of GX9783:

Low noise and intermodulation distortion

• Supports multiple output modes such as NRZ and RZ

LVDS input with dual port or optional interleaved single port operation

Differential analog current output can be programmed within the full range of 8.6mA to 31.7mA

10 bit current assisted DAC with pull/fill function

Internal 1.2V precision reference voltage source

• Powered by 1.8V and 3.3V power sources; 345mW power consumption

Small size, RoHS compliant, 72 pin LFCSP package

• Built in self calibration function