ADC3649IRTD

Analog To Digital Converters (ADC) Overview

The ADC3649IRTD is a dual-channel, 14-bit analog-to-digital converter (ADC) from Texas Instruments operating at a maximum sampling rate of 500MSPS. It features a single core architecture with a noise spectral density of -158.5dBFS/Hz and an aperture jitter of 75fs. The device consumes 300mW per channel at full speed and includes programmable 100Ω to 200Ω input termination. It supports up to four independent digital down-converters (DDCs) with decimation ratios ranging from /2 to /32768. Data output utilizes DDR or Serial LVDS interfaces, accommodating resolutions up to 32 bits for high decimation rates.

Analog To Digital Converters (ADC) Feature Summary

• Integrated quad-band digital down-converter supporting wideband to narrowband decimation
• Flexible LVDS interface with options for parallel DDR or serial data transmission
• Buffered differential analog inputs with programmable internal termination
• Phase-coherent frequency hopping capability via 48-bit NCO

Analog To Digital Converters (ADC) Applications

• Software defined radio
• Radar systems
• Spectrum analyzer
• Communications infrastructure

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct package type and temperature rating. Confirm that the required supply voltages match the recommended operating conditions before integration. Check for any recent documentation updates regarding pin functions or electrical characteristics prior to finalizing procurement specifications.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 14-bit resolution and 500MSPS throughput are required for dual-channel applications. Consider the integrated DDCs if baseband processing and decimation are needed on-chip. Evaluate power consumption requirements, as the device draws 300mW per channel at maximum sampling rates. Ensure the system design accommodates the specified 1.8V and 1.2V supply rails.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC364x family, which also includes the ADC3648 operating at 250MSPS. Both devices share identical 14-bit resolution and dual-channel architecture but differ in maximum sampling speed. The family is designed for low-noise performance and power efficiency in high-speed data acquisition environments.

Analog To Digital Converters (ADC) Replacement Considerations

The ADC3648 serves as a lower-speed alternative within the same family. For 16-bit resolution requirements, the ADC3669 series offers comparable sampling speeds with higher precision.