LIDAR LIDAR available with analog-to-digital converter GX9251, replaces AD9251

LIDAR LIDAR calculates the distance of an object by measuring the time interval between transmitted and received pulse signals, and is very common in consumer electronics, drones, robotics, connected cars, and other mobile fields. In LIDAR systems, accurate and efficient data acquisition directly affects the system‘s target detection accuracy, resolution, and overall performance. The high-performance dual-channel 14-bit analog-to-digital converter GX9251 can replace the AD9251 in LiDAR systems.

High resolution and high accuracy: GX9251 with 14-bit high resolution, can be extremely fine quantization of the input analog signal, high resolution can accurately capture the subtle changes in the LIDAR signal, the product adopts a multi-stage differential pipeline architecture, built-in output error correction logic, in the 80MSPS data rate can provide 14-bit accuracy, and to ensure that in the entire operating temperature range of the code is not lost.

High-speed sampling rate: GX9251 chip supports 20MSPS/40MSPS/65MSPS/80MSPS multiple sampling rates, which can meet the demand for sampling speed in different application scenarios. In radar systems, especially for high-speed target detection or high-resolution imaging radar, fast echo signal acquisition is required to accurately measure the target‘s motion parameters and position information.

High integration: The ADC has a variety of built-in functional features to optimize device flexibility and minimize system cost, such as programmable clock and data alignment and generation of programmable digital test codes. Available digital test codes include built-in fixed and pseudo-random codes, as well as user-defined test codes entered through the serial port interface.

Key Performance:

- 1.8V power supply, 1.8V to 3.3V output power supply

- Low power consumption: 32mW per channel (20MSPS); 68mW per channel (80MSPS)

- Signal-to-Noise Ratio (SNR): 74.4dBFS (30.5MHz input); 70dBFS (200MHz input)

- Spurious Free Dynamic Range (SFDR): 82dBc (30.5MHz input); 74dBc (200MHz input)

- Differential Nonlinearity (DNL): ±0.75LSB (typical)

- On-chip reference voltage source and sample-and-hold circuitry, QFN-64 package