ADS6443IRGC25

Analog To Digital Converters (ADC) Overview

The ADS6443IRGC25 is a quad-channel, 14-bit analog-to-digital converter (ADC) from Texas Instruments with a maximum sampling rate of 80 MSPS. It operates on a single 3.3-V supply and features serialized LVDS outputs to reduce interface pin count within a compact 64-pin QFN package (9 mm × 9 mm). The device includes an internal phase-locked loop (PLL) for bit clock generation, programmable coarse and fine gain options, and integrated voltage references. Key electrical specifications include a differential input voltage range of 2 Vpp, an analog input bandwidth of 500 MHz, and typical spurious-free dynamic range (SFDR) performance of 84 dBc at 170 MHz with 3.5 dB coarse gain.

Analog To Digital Converters (ADC) Feature Summary

• Quad-channel architecture with 14-bit resolution and no missing codes across the industrial temperature range (-40°C to 85°C).
• Serialized LVDS output interface supporting both 1-wire and 2-wire modes, reducing receiver design complexity.
• Integrated PLL multiplies the incoming sampling clock to derive the bit clock for data serialization.
• Programmable gain structure featuring 3.5 dB coarse gain and up to 6 dB fine gain in 1 dB steps.

Analog To Digital Converters (ADC) Applications

• Base-station intermediate frequency (IF) receivers.
• Diversity receiver systems.
• Medical imaging equipment.
• High-performance test and measurement instruments.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'IRGC25' against the manufacturer's current Package Option Addendum to confirm tape and reel quantities and marking details. Ensure the source document matches the SLAS531B revision date. Confirm that the ordering information aligns with the specified industrial temperature range and QFN-64 package dimensions provided in the datasheet.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS6443 variant specifically when an 80 MSPS sampling rate is sufficient, as it offers lower power consumption compared to the 125 MSPS ADS6445. Evaluate the trade-off between SFDR and SNR when utilizing the 3.5 dB coarse gain option. Ensure the system supports the required LVDS clock input amplitudes, which can be as low as 400 mVpp, and verify compatibility with the 2-wire DDR or SDR serial interface configurations.

Analog To Digital Converters (ADC) Part Context

The ADS6443 belongs to the ADS644X family, which also includes the ADS6445 (125 MSPS), ADS6444 (105 MSPS), and ADS6442 (65 MSPS). These devices are pin-compatible and share identical package and functional characteristics, differing primarily in their maximum specified sampling frequencies. This family is designed to provide flexibility for high-density applications requiring multiple simultaneous sampling channels.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include the ADS6445, ADS6444, and ADS6442. Selection among these depends on whether the application requires higher or lower sampling rates than 80 MSPS. No other distinct part numbers are confirmed as direct replacements in the provided documentation.