Qilishi and Efinix Launch Fully Domestic High-Speed ADC-FPGA Acquisition System Solution

Qilishi focuses on the R&D of high-performance RF sampling ADC chips and is one of the few hard-tech companies in China capable of providing an integrated solution of chips + boards + AI measurement software. The company is not just a chip supplier; it also offers NRE custom development, multi-chip ADC interleaving calibration firmware, and complete system debugging support services. Targeting high-end measurement instruments, optoelectronic detection, large scientific facilities and other fields, it builds independently controllable high-speed signal acquisition solutions to overcome the challenge of restricted overseas supply of high-end high-speed ADCs.

II. Flagship Product: 12-bit 10.4 GSPS High-Speed ADC, Benchmarking Mainstream Overseas Devices

Qilishi's 12-bit 10.4 GSPS high-speed ADC chip can benchmark against and replace mainstream overseas models ADC12DJ5200 and AD9213. At equivalent core performance specifications, the chip's power consumption is more than 30% lower than that of ADC12DJ5200 and AD9213, effectively reducing the power supply and thermal burden on the overall system. The chip features high bandwidth, high linearity and low noise, and natively supports multi-chip TI ADC time-interleaving architecture. It is paired with self-developed FPGA algorithms for foreground calibration, background calibration and Tskew timing calibration, which automatically compensate for channel gain, offset and sub-picosecond timing deviations, suppress interleaving spurs, and meet the requirements for high-precision acquisition of wideband transient signals.

III. Complete ADC Product Matrix Covering Multi-Scenario Acquisition Needs

Qilishi has built four major ADC product series and system-level businesses, forming a complete signal chain product matrix:

System-level product series: supporting high-speed acquisition boards, hardware design services, FPGA firmware software, and AI-based measurement equipment software, providing customers with one-stop signal acquisition system solutions.

IV. Introduction to Efinix and the 16nm Titanium Series FPGA

Efinix is a domestic independent FPGA chip manufacturer that has developed its own Quantum compute architecture, focusing on low-power, high-performance programmable logic chips. This collaboration adopts its 16nm Titanium series TJ375 production FPGA. The Titanium series FPGA offers a broad range of logic resources, embeds a quad-core hard RISC-V processor, and integrates high-speed SerDes transceivers up to 16 Gbps, PCIe Gen4 hard IP interfaces, and LPDDR4/4x memory controllers, enabling high-speed data reception, parallel signal processing, large-capacity buffering and high-speed streaming storage. Its powerful hardware acceleration and embedded management capabilities make it suitable for real-time demodulation, FFT digital down-conversion, waveform storage and AI signal preprocessing of massive sampled data from high-speed ADCs, making it the core main control device for building a fully domestic high-speed acquisition system.

V. Working Principle of the ADC Chip + FPGA High-Speed Data Acquisition Card

The complete acquisition system consists of a signal conditioning front end, Qilishi high-speed ADC, Efinix Titanium FPGA, high-speed buffer and host interface. The RF or transient analog signal under test is fed into the high-speed ADC after impedance matching and signal conditioning; driven by a high-precision same-source clock, the ADC digitizes the analog signal and transmits the massive sampled data stream to the Efinix FPGA via the JESD204B high-speed serial interface. The FPGA undertakes three core tasks: ① receiving, deframing and aligning the ADC high-speed data stream, and completing multi-channel timing synchronization; ② hardware parallel real-time signal processing, including digital down-conversion (DDC), FFT spectrum analysis, digital filtering and waveform peak extraction; ③ data buffering and packetization, uploading raw data and processing results to the host via PCIe, Ethernet or optical ports. Leveraging Qilishi's multi-channel ADC interleaving calibration firmware, the FPGA corrects gain, offset and timing errors of multiple ADCs in real time, improving system dynamic performance. The complete solution eliminates dependence on overseas ADCs and high-end FPGAs, achieving full domestic localization from core chips to system firmware.

VI. Application of High-Speed ADC Chips in Two Types of Anti-Drone Equipment

Leveraging the high bandwidth and high sampling rate of Qilishi high-speed ADCs, the solution can support the domestic development of two mainstream types of anti-drone detection equipment:

1. Full-Waveform LiDAR Anti-Drone Detection System

LiDAR emits nanosecond-level laser pulses, and the receiver captures the weak optical echo signals reflected from the target. The high-speed ADC fully captures the echo pulse waveform, preserving the details of the pulse leading edge, and completes waveform accumulation and threshold extraction within the FPGA to precisely measure target distance. By relying on waveform characteristics to distinguish drones from birds, clouds and other clutter, it enables all-weather detection, identification and tracking of low-altitude targets.

2. Wideband RF Reconnaissance-Type Anti-Drone Surveillance Equipment

Drone remote controllers and video transmission devices emit RF signals in specific frequency bands. The system antenna receives broadband RF signals from the air, and high-speed ADCs perform direct RF sampling. The FPGA conducts real-time spectrum monitoring, signal interception, direction finding, and signal feature recognition to rapidly locate drone remote control signal sources, sense the frequency bands and positions of intruding drones, and provide target information for RF jamming and emergency response.

7. Qilishi and Efinix Join Forces to Build a Fully Domestic High-Speed ADC-FPGA Acquisition System Solution

Qilishi and Efinix have joined forces to build a deployable fully domestic high-speed ADC-FPGA acquisition system solution based on domestic high-speed RF ADCs and domestic 16nm Titanium FPGAs. The solution integrates Qilishi ADC chips, time-interleaved multi-channel calibration firmware, and Efinix FPGA hardware computing power, eliminating dependence on overseas high-speed ADCs and high-end FPGA chips. This solution enables rapid development of domestically produced FMC daughter cards, PCIe high-speed digitizers, and VPX modular acquisition devices, widely applicable to key fields such as industrial ultrasonic testing, partial discharge online monitoring, national large-scale scientific experiments, and optical communication testing, while also supporting scenarios including radar, low-altitude security, and transient pulse measurement. The solution balances performance, power consumption, and autonomous controllability, significantly reducing the R&D cycle for domestic instrument and equipment manufacturers and helping high-end signal acquisition equipment achieve domestic substitution.

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