Radar is an important technology for detecting, locating, and tracking targets. The radar echo signal carries key information such as the distance, velocity, and orientation of the target. The echo signal of the high-speed moving target of the radar needs to be quickly collected for real-time tracking. Traditional signal acquisition schemes often struggle to balance sampling rate, resolution, dynamic range, and other aspects, which cannot meet the requirements of radar applications in complex scenarios. The 16 bit high-speed analog-to-digital converter GX9268 of GXSC, with its high sampling rate of 80MSPS/105MSPS/125MSPS, signal-to-noise ratio of 76dBFS, and spurious free dynamic range of 77dBc, is an ideal choice to replace AD9268 for radar echo signal acquisition.

The GX9268 adopts a multi-stage differential pipeline architecture with built-in output error correction logic, which can provide 16 bit accuracy at a data rate of 125MSPS and ensure no code loss throughout the entire operating temperature range. The GX9268 has multiple built-in functional features, which can achieve the best flexibility of the device and the lowest system cost, such as generating programmable digital test codes. The available digital test codes include built-in fixed codes and pseudo-random codes, as well as user-defined test codes input through the serial port interface.

GX9268 uses a differential clock input to control all internal conversion cycles. The digital output data format is offset binary, Gray code, or binary complement. Each ADC channel has a data output clock (DCO) to ensure that the receiving logic has the correct latch timing. This device supports 1.8V CMOS output and LVDS output, and the output data can be multiplexed on a single output bus.

GX9268 Main Performance:

1.8V analog power supply

1.8V digital output power supply

Low power consumption: 495mW (125MSPS)

Signal to Noise Ratio (SNR): 76dBFS (fin)= 30.5MHz@125MSPS )

Non spurious dynamic range (SFDR): 77dBc (fin)= 30.5MHz@125MSPS )

• On chip reference voltage source and sample and hold circuit

QFN-64 package 9mm × 9mm