ADS6444IRGC25

Analog To Digital Converters (ADC) Overview

The ADS6444IRGC25 is a quad-channel, 14-bit analog-to-digital converter (ADC) from Texas Instruments. It operates at a maximum sampling rate of 105 MSPS and features serialized LVDS outputs to minimize interface lines within a compact 64-pin QFN package (9 mm × 9 mm). The device utilizes a single 3.3-V supply for both analog and digital domains. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 73.8 dBFS at a 10 MHz input frequency with 0 dB gain, and an Effective Number of Bits (ENOB) of 11.7 bits at 50 MHz. It incorporates an internal phase-locked loop (PLL) for bit clock generation and supports programmable coarse and fine gain settings.

Analog To Digital Converters (ADC) Feature Summary

• Quad-channel architecture with 14-bit resolution and no missing codes.
• Serialized LVDS data outputs supporting 1-wire or 2-wire interfaces.
• Integrated PLL multiplies the sampling clock to derive the bit clock.
• Programmable 3.5 dB coarse gain and up to 6 dB fine gain in 1 dB steps.

Analog To Digital Converters (ADC) Applications

• Base-station IF receivers
• Diversity receivers
• Medical imaging systems
• Test equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix '25' against official documentation, as standard listings typically use 'IRGCR' or 'IRGCT'. Confirm current production status, as the ADS644X family may be subject to end-of-life transitions. Ensure compatibility with existing PCB footprints for the RGC VQFN-64 package during sourcing.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a high-density, four-channel solution is required for 14-bit signal acquisition. The ADS6444 is optimized for 105 MSPS applications; consider the ADS6445 for 125 MSPS requirements or the ADS6443/ADS6442 for lower power consumption at reduced speeds. Verify that the serialized LVDS output matches the receiver's interface capabilities.

Analog To Digital Converters (ADC) Part Context

The ADS6444 belongs to the ADS644X family, which includes the ADS6445, ADS6443, and ADS6442. These devices share pin compatibility and architectural similarities but differ in maximum sampling rates ranging from 65 MSPS to 125 MSPS. This family allows designers to scale performance while maintaining consistent board layouts across different system requirements.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS6445, ADS6443, and ADS6442 are pin-compatible alternatives within the same family. For direct replacement, verify that the sampling rate and power consumption of the substitute part align with the system design constraints.