Analog Devices Inc. AD9649-80EBZ

Overview

AD9649-80EBZ from Analog Devices is an evaluation board designed specifically for the AD9649 14-bit, 80 MSPS analog-to-digital converter (ADC), supporting full ac performance characterization, SPI configuration, and flexible clock/analog input routing. It integrates on-board LDOs or optional ADP2114 switching regulators, dual-channel balun-coupled inputs, and CMOS output buffering compatible with the HSC-ADC-EVALCZ FPGA capture platform.

For engineers reviewing the AD9649-80EBZ datasheet, AD9649-80EBZ pinout, AD9649-80EBZ application, or AD9649-80EBZ equivalent, this page delivers verified hardware architecture, jumper-configurable signal paths, power supply options, clocking modes (on-board oscillator, external SMA, or AD9517 PLL), and software integration guidance for VisualAnalog and SPI Controller tools - all critical for high-speed ADC validation and system-level design.

Technical Context

The AD9649-80EBZ implements a dual-channel, transformer-coupled analog front end optimized for up to 150 MHz input frequencies, with configurable 50 Ω termination, VCM bias, and selectable gain paths via unpopulated amplifier sites (AD8375 on Channel A, ADL5562/ADA4937/ADA4938 on Channel B). It supports internal reference (1.35 V, 2.7 V p-p full-scale) or external reference configurations via J201 header and discrete component population.

Its clock subsystem offers three mutually exclusive modes: default transformer-coupled external clock (J602 SMA), on-board Valpey Fisher VFAC3-BHL-80MHz oscillator (enabled via J605 and C610), or AD9517-based LVPECL clock synthesis (enabled by populating R607/R608/R731/R732 and removing R609/R610/R611/R612). Power delivery supports LDO-only, mixed LDO/switching, or full ADP2114 dual-buck operation.

Key Specifications

Availability

AD9649-80EBZ is available at Aetrix Electronics and suitable for high-speed data acquisition, communications receiver prototyping, and instrumentation development requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for AD9649-80EBZ 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, with deep expertise in precision conversion, RF, and signal chain solutions.

The AD9649-80EBZ belongs to Analog Devices' high-speed ADC evaluation platform family, engineered to accelerate time-to-test for pipeline ADCs in radar, broadband communications, and test equipment - emphasizing low-jitter clocking, clean power delivery, and flexible signal conditioning.

FAQ

What is the primary function of the AD9649-80EBZ?

The AD9649-80EBZ is an evaluation board dedicated to the AD9649 14-bit, 80 MSPS analog-to-digital converter. Its sole function is to provide a complete, calibrated hardware environment for evaluating the AD9649's dynamic performance (SNR, SFDR, ENOB), configuring registers via SPI, validating clock and analog input interfaces, and capturing digitized data using the HSC-ADC-EVALCZ FPGA platform - not for end-product integration.

Does the AD9649-80EBZ support external clock sources?

Yes, the AD9649-80EBZ supports external clock sources via the SMA connector J602, which accepts a 50 Ω-terminated, ~2.8 V p-p sine wave input. The default clock path uses this external source; the on-board 80 MHz oscillator is disabled unless J605 is installed and C610 is populated. Phase noise <1 ps rms jitter is recommended to preserve AD9649-80EBZ measurement fidelity.

Can the AD9649-80EBZ be powered using bench supplies instead of the included wall adapter?

Yes, the AD9649-80EBZ can be powered by external bench supplies. Remove ferrite beads E101, E102, E114, E103, E105, and E107 to isolate on-board LDOs, then apply 1.8 V (1 A) to P102 for DUT_AVDD/DRVDD, 1.8 V (1 A) to P103 for DVDD, and optionally 3.3 V (1 A) for 3V_CLK. This enables independent domain biasing and thermal profiling during AD9649-80EBZ characterization.

How is analog input configured on the AD9649-80EBZ?

The AD9649-80EBZ uses a double-balun-coupled, 50 Ω-terminated analog input with fixed 2 V p-p full-scale drive level. Default configuration (per Figure 5 in UG-003) includes 33 Ω series resistors, 0.1 µF AC-coupling caps, and VCM bias network. Channel A supports optional AD8375 DVGA insertion; Channel B supports ADL5562, ADA4937, or ADA4938 amplifiers - all require manual component population and jumper enablement (J403/J503).

Which software tools are required to operate the AD9649-80EBZ?

Two software tools are mandatory: VisualAnalog v1.0 for FFT-based performance analysis and real-time data visualization, and the SPI Controller application for register-level configuration of the AD9649 on the AD9649-80EBZ. Both are freely available from analog.com/fifo and require Windows XP or later, USB 2.0, and proper FPGA bitstream loading via the HSC-ADC-EVALCZ interface.