ADC GX9269 Compatible AD9269 for Radar/LIDAR Applications

Radar/LIDAR calculates the distance of an object by measuring the time interval between transmitted and received pulse signals. As the core component of the LIDAR signal chain, the performance of the analog-to-digital converter chip determines the scanning resolution and dynamic refresh capability of the system, and needs to have both high-speed and high-precision characteristics.GXSC‘s dual-channel GX9269 with high sampling rate (up to 80MSPS) and 16-bit high-precision resolution is able to meet the radar system‘s requirements for echo signal acquisition well.

The GX9269‘s AVDD is powered by a 1.8V power supply, the DRVDD is powered by a 1.8V or 3.3V power supply, and has a built-in high-performance sample-and-hold circuit and an on-chip reference voltage source. The chip utilizes a multi-stage differential pipeline architecture with built-in output error correction logic to provide 16-bit precision at 80MSPS data rate and guaranteed lossless code over the entire operating temperature range.

The analog-to-digital converter has a variety of built-in features to optimize device flexibility and minimize system cost, such as the 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 input via the serial port interface (SPI).

A differential clock input is used 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 proper latch timing of the receive logic. The device supports 1.8V/3.3V CMOS outputs and output data can be multiplexed on a single output bus.