Analog Devices Inc. AD6649EBZ

Overview

AD6649EBZ from Analog Devices is a high-speed IF diversity receiver evaluation board built around the AD6649 dual-channel 14-bit, 250 MSPS analog-to-digital converter. It supports two filter modes: 95 MHz bandwidth with fixed-frequency NCO and low-latency FIR, or 100 MHz bandwidth with tunable NCO and high-performance FIR, both at 245.76 MSPS. Designed for RF receiver testing in wireless infrastructure and radar systems.

For engineers reviewing the AD6649EBZ datasheet, AD6649EBZ pinout, AD6649EBZ application, or AD6649EBZ equivalent, this page delivers verified hardware interface details, FPGA capture timing alignment settings, USB 2.0 data streaming capability, VisualAnalog and SPI Controller software integration, and dual-channel ADC evaluation workflows - all critical for IF sampling validation and digital receiver prototyping.

Technical Context

The AD6649EBZ implements a complete signal chain for evaluating the AD6649's dual 14-bit ADC cores, including anti-aliasing filtering, clock conditioning via J506 (10–14 dBm input), and analog inputs at J301 (Channel A) and J303 (Channel B). It interfaces directly with the HSC-ADC-EVALCZ FPGA capture board using a parallel LVDS interface.

FPGA I/O voltage is set to 2.5 V via jumper J9 on the HSC-ADC-EVALCZ board; SPI configuration uses AD6649spiR03.cfg; DCO clock delay is programmable up to 600 ps for timing alignment; VisualAnalog FFT analysis supports Nyquist zone-aware harmonic identification when NCO frequency differs from fs/4.

Key Specifications

Availability

AD6649EBZ is available at Aetrix Electronics and suitable for RF receiver development, wireless infrastructure testing, radar signal processing, and high-speed ADC validation requiring stable component supply and full evaluation ecosystem support.

Supply support for AD6649EBZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.

The AD6649EBZ belongs to Analog Devices' high-speed data converter evaluation platform family, engineered specifically to accelerate design-in of IF-sampling receivers for communications and defense applications.

FAQ

What is the primary function of the AD6649EBZ evaluation board?

The AD6649EBZ evaluation board is a dedicated hardware platform for characterizing the AD6649 dual-channel 14-bit, 250 MSPS IF diversity receiver. It enables real-time signal capture, NCO tuning, FIR filter mode selection, and FFT-based performance validation using VisualAnalog and SPI Controller software. The AD6649EBZ must be used with the HSC-ADC-EVALCZ FPGA capture board to stream digitized data to a PC via USB 2.0.

Which software tools are required to operate the AD6649EBZ?

Operation of the AD6649EBZ requires Analog Devices' VisualAnalog for FFT analysis and signal visualization, and the SPI Controller software for register-level configuration of the AD6649. The AD6649EBZ relies on the AD6649spiR03.cfg configuration file for correct SPI initialization, and FPGA programming of the HSC-ADC-EVALCZ board is mandatory before data capture. The AD6649EBZ does not function as a standalone instrument without these tools.

How do I configure the AD6649EBZ for fixed-frequency vs. tunable NCO operation?

To configure the AD6649EBZ for fixed-frequency NCO mode, enable 'Fir Low Latency Mode En', 'NCO Phase Dither Enable', 'NCO Amplitude Dither Enable', 'Enable Sync NCO1 to NCO2', and 'Low Latency NCO (Fs/4 only)' in the SPI Controller GUI, with NCO frequency set to 40000000. For tunable NCO mode, disable 'Low Latency NCO (Fs/4 only)' and enable 'High Latency NCO' instead - both modes require identical dither and sync settings. These configurations are applied directly to the AD6649EBZ's onboard AD6649 IC.

What power supply specifications are required for the AD6649EBZ?

The AD6649EBZ requires a 6 V, 2 A switching power supply - such as the CUI EPS060250UH-PHP-SZ - connected to its dedicated power input. Additionally, the companion HSC-ADC-EVALCZ board must also be powered by an identical 6 V, 2 A supply. Jumper J9 on the HSC-ADC-EVALCZ board must be set to 2.5 V to match FPGA I/O voltage requirements. Failure to meet these power specifications will prevent proper AD6649EBZ operation and FPGA programming.

Can the AD6649EBZ be used without the HSC-ADC-EVALCZ board?

No, the AD6649EBZ cannot operate independently. It lacks onboard data capture memory and USB interface logic; all digitized samples from the AD6649 IC are routed via LVDS to the HSC-ADC-EVALCZ FPGA board, which handles FIFO buffering, USB 2.0 packetization, and host communication. The AD6649EBZ and HSC-ADC-EVALCZ boards must be mechanically and electrically mated per Figure 1 in the documentation, and the FPGA on the HSC-ADC-EVALCZ board must be programmed before the AD6649EBZ can stream data.