The GXSC analog-to-digital converter replaces the EV10AQ190A in radar target simulators

A radar target simulator is a device designed to simulate the working principles of radar. It can replicate the transmission and reception processes of radar signals through software. By observing and analyzing the simulated results, it enables the evaluation of radar system performance and facilitates improvements and optimizations.

The radar target simulator, as a testing and verification device for radar systems, can accurately reproduce target echo signals in complex electromagnetic environments. The bandwidth of these target echo signals typically reaches several GHz (e.g., 5 GHz for phased array radar signals), requiring the analog-to-digital converter to possess ultra-high sampling rates, wide bandwidth, low distortion, and high dynamic range. This paper recommends the use of the GXSC four-channel 10-bit 1.25/2.5/5 GSPS high-speed analog-to-digital converter as the signal acquisition device for the radar target simulator.

During the signal processing stage, the radar target simulator performs filtering, amplification, and noise reduction on the received signals to extract information about the target object. The GXSC analog-to-digital converter, with a 10-bit resolution, can accurately capture subtle signal variations. The chip supports sampling rates of 1.25Gsps, 2.5Gsps, or 5Gsps, with a maximum achievable rate of 5Gsps. This high sampling rate enables the ADC to rapidly sample analog signals, allowing real-time tracking of dynamic signal changes.

Each channel of its ADC features an independent DDR data clock. When multiple channel ADCs are in operation, any data clock can be selected to simultaneously sample data from several channels. The chip supports interleaved operation modes between channels, with the ADC operating at a 2.5GSPS sampling rate in two-channel mode and a 5GSPS sampling rate in single-channel mode. It also supports the AutoSync function for automatic synchronization, enabling multi-chip cascading, as well as automatic synchronization for single-board multi-ADC cascading and multi-board multi-ADC cascading.

GXSC Analog-to-Digital Converter Product Advantages:

With a self-designed architecture, it achieves excellent dynamic performance at a low power consumption of less than 3.2W

Packaging dimensions are compatible with the reference model, supporting functional replacement for EV10AQ190A

Low power consumption optimization design, accounting for 56% of the benchmark model, eliminating the need for a heatsink

Supports multi-chip automatic synchronization and provides dedicated acquisition IPs for easy application

Full-power bandwidth: 3.0 GHz

Data delay: 80 main clock cycles

Static Performance: DNL: -1.0/+1.1 LSB, INL: -1.3/+2.6 LSB

To facilitate user selection and usage, the domestic analog-to-digital converter‘s data output format can be programmed to either offset binary code format or two‘s complement format. The product employs a parallel LVDS interface for data output, with a minimum conversion delay of 19ns.