GXSC High-Speed ADC Replaces ADC12DL3200 for Spectral Measurement Applications

Spectroscopy is a technique for precisely capturing the intensity distribution and instantaneous variations of broadband optical signals. By decomposing polychromatic light into spectral lines of different wavelengths, it measures the light reflected or emitted from an object‘s surface, thereby providing detailed information about the material.

As hyperspectral imaging technology advances toward "high frame rates, wide spectral bands, and high resolution," ADC devices face two major challenges: first, meeting the direct sampling requirements from visible to near-infrared (400-2500nm) and higher frequency bands, and second, maintaining low noise and high linearity during high-speed acquisition while ensuring radiation correction errors remain within acceptable limits.

The GXSC dual-channel 12-bit 3.2GSPS high-speed ADC product features two built-in 12-bit, 3.2GSPS high-speed ADCs, with support for single-channel mode that achieves a maximum sampling rate of 5GSPS. It is highly suitable for spectral measurement applications. The GXSC chip adopts a self-designed architecture, enabling pin-to-pin replacement of Texas Instruments‘ ADC12DL3200. The product operates on a single power supply, delivering excellent dynamic performance with low power consumption of less than 2W.

The GXSC analog-to-digital converter features a parallel LVDS interface for data output, with a minimum conversion delay of 10ns. The data interface supports Demux mode, enabling parallel data output via up to 48 pairs of LVDS buses, with a data rate of up to 1.6Gbps. The output format is programmable in offset binary and two‘s complement formats, offering user flexibility. Additionally, it supports AutoSync automatic synchronization, facilitating multi-chip cascading. The converter also enables automatic synchronization for multiple ADCs on a single board and across multiple boards.

Advantages of GXSC Analog-to-Digital Converter Products:

Encapsulated as plastic FcBGA256, pin-compatible with reference model, supports pin-to-pin replacement for ADC12DL3200

Built-in dual-channel 3.2GSPS ADC, supporting single-channel 5.0GSPS operation mode

Low power consumption, no need for a heat sink

Built-in terminal resistor, high-speed buffer

Provide test sequences for system debugging and batch testing

Single power supply of 1.9V, operating temperature range from -55°C to +105°C

Data delay; 30 master clock cycles

Static Performance: DNL -0.4/+0.4 LSB, INL -1.8/+2.0 LSB

Full power bandwidth: 6.0 GHz