ADC34RF55IRTDT

Analog To Digital Converters (ADC) Overview

The ADC34RF55IRTDT is a quad-channel, 14-bit analog-to-digital converter (ADC) from Texas Instruments. It supports a maximum sampling rate of 3 GSPS and an input frequency up to 3 GHz. The device features a single-core non-interleaved architecture with 50 fs aperture jitter. Key performance metrics include a noise spectral density of -156 dBFS/Hz without averaging and -158 dBFS/Hz with 2x averaging. It provides a full power input bandwidth of 2.75 GHz and operates on 1.8 V and 1.2 V supplies. Power consumption is 1.2 W per channel at full speed. The component utilizes a JESD204B serial interface supporting lane rates up to 13 Gbps.

Analog To Digital Converters (ADC) Feature Summary

• Integrates dual-band digital down-converters (DDC) with 48-bit NCOs for phase-coherent frequency hopping in under 1 µs.
• Supports JESD204B subclass 1 deterministic latency with up to two serdes lanes per channel.
• Features internal signal averaging to improve noise spectral density and low close-in residual phase noise.

Analog To Digital Converters (ADC) Applications

• Phased array radar
• Software defined radio (SDR)
• High-speed digitizer
• Electronic warfare

Analog To Digital Converters (ADC) Procurement Notes

Verify the RTD package designation and tape-and-reel orientation for the IRTDT suffix against the latest manufacturer documentation. Confirm that the ordering information matches the specific pin configuration and thermal pad requirements for your PCB layout. Ensure compliance with humidity sensitivity levels during storage and handling procedures.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring direct RF sampling up to 3 GHz with high dynamic range. Consider the 1.2 W/ch power dissipation and thermal resistance values when designing heat sinks or PCB copper planes. Verify that the system clock and SYSREF signals meet the specified timing requirements for synchronization across all four channels.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC34RF55 family, which includes variants like the ADC34RF52 operating at lower speeds. It is designed for high-performance data conversion in demanding environments. The device integrates advanced digital processing capabilities directly on-chip to reduce system complexity and board space requirements for wideband signal acquisition.

Analog To Digital Converters (ADC) Replacement Considerations

The ADC34RF52 serves as a lower-speed alternative within the same family. Verify pin compatibility and software register maps before substitution. Performance differences in sampling rate and output data throughput must be evaluated against system requirements.

Analog To Digital Converters (ADC) FAQ

What is the maximum output data rate in bypass mode?

In bypass mode, the maximum supported output data rate is 1.5 GSPS due to the limitation of two serdes lanes per ADC channel.

How does the device achieve fast frequency hopping?

Frequency hopping is achieved in less than 1 µs by using GPIO pins for NCO frequency control, enabling phase-coherent switching between bands.

What is the typical noise spectral density with averaging enabled?

With 2x internal averaging enabled, the noise spectral density improves to -158 dBFS/Hz.