Replacing AD9689, GXSC GX9689 Dual-Channel 14-Bit 2.6GSPS ADC Is Applied to Satellite Communication Ground Stations

The satellite communication ground station receiver is the hub of the space-to-ground communication link. It mainly completes the reception, amplification, frequency conversion, digital acquisition, and demodulation and analysis of satellite downlink RF signals. It has the advantages of wide coverage, long transmission distance, and flexible networking. The GX9689 dual-channel 14-bit 2.6GSPS analog-to-digital converter features ultra-wideband, high linearity, large dynamic range, low power consumption, and high integration, and can greatly simplify the satellite receiver hardware link, broaden the receiving frequency band, and improve signal demodulation accuracy.

GX9689 is a high-speed, high-resolution, dual-channel ADC for high-end, high-performance applications. Its main performance lies in a high sampling rate of 1.25GSPS, 14-bit resolution, and the integration of two channels, simplifying system connection through the JESD204B high-speed serial interface. It is suitable for scenarios with stringent requirements for sampling speed, number of channels, signal bandwidth, and dynamic range, such as radar, instrumentation, and communication infrastructure.

GX9689 core functions:

Dual-channel ADC: Integrates two independent 14-bit analog-to-digital converter channels, capable of simultaneously acquiring two analog signals.

Ultra-high sampling rate: Maximum sampling rate up to 1.25GSPS, capable of capturing extremely high-frequency signals or achieving extremely high instantaneous bandwidth.

14-bit resolution: Provides good dynamic range and signal-to-noise ratio, suitable for applications requiring high precision.

Wide input bandwidth: The analog input circuit is optimized to provide excellent linearity and dynamic performance at high sampling rates, with effective input bandwidth typically reaching hundreds of MHz or even GHz levels.

GX9689 product advantages:

Package size is compatible with AD9689, supporting functional replacement of AD9689

Power consumption is about 60% of the reference chip, effectively reducing the overall power consumption of the system solution

Wide temperature operation from -55℃ to +105°C, with strong performance robustness within the operating range

Plastic FCBGA196 small-size package, effectively reducing system volume

High integration, integrating digital down-conversion and filters, helping to reduce system cost

204B high-speed interface, convenient for users to layout and route

Full power bandwidth: 6.0GHz