Replacing the AD9253: GX9253 Quad-Channel 14-Bit 125MSPS ADC for Industrial Inspection Systems

Industrial inspection is a key part of ensuring product quality, equipment safety, and production efficiency. It covers a variety of technologies, including ultrasonic nondestructive testing, machine vision appearance inspection, and vibration condition monitoring. As the manufacturing industry moves toward higher precision and greater automation, inspection signals often have the characteristics of strong transient behavior and high frequency. On the other hand, multi-channel inspection, such as line-scan cameras and multi-point vibration monitoring, requires strictly synchronized sampling of all signal channels to ensure time alignment and spatial positioning accuracy.

The GX9253, a high-speed ADC, can be used as a pin-to-pin replacement for the AD9253 in industrial inspection systems. The GX9253 offers the technical advantages of a four-channel synchronous sampling architecture, a maximum sampling rate of 125MSPS, LVDS serial output, and low-power 1.8V supply, enabling high-speed, high-fidelity digital acquisition of analog signals output by industrial sensors. It uses an LVPECL/CMOS/LVDS-compatible sampling rate clock signal to fully leverage its performance. For most applications, no external reference power supply or driver device is required.

To obtain a suitable LVDS serial data rate, the GX9253 automatically multiplies the sampling rate clock. The GX9253 provides a data clock output (DCO) for capturing data at the output, as well as a frame clock output (FCO) for transmitting new output byte signals. It also supports independent power-down states for each channel; when all channels are shut down, power consumption is less than 10mW.

GX9253 Product Advantages:

• Product dimensions and pin functions are compatible with the reference model, supporting pin-to-pin replacement of the AD9253

• Single power supply, easier to use

• Low power consumption, no heat sink required

• Adjustable input voltage range

• Static performance: DNL -0.9/+1.0LSB, INL -5.0/+5.0LSB

• Dynamic performance (fs=125MSps, input signal power -1dBFS)

fin=9.7MHz; ENOB=11.7Bit, SINAD=72dBFS, SNR=72.5dBFS

fin=70MHz; ENOB=11.2Bit, SINAD=69dBFS, SNR=69.5dBFS

fin=128MHz; ENOB=10.5Bit, SINAD=64.7dBFS, SNR=65.3dBFS

fin=200MHz; ENOB=10.0Bit, SINAD=61.9dBFS, SNR=62.5dBFS