Analog Devices Inc. AD8333-EVALZ

Overview

AD8333-EVALZ from Analog Devices is an evaluation board for the AD8333 dual I/Q demodulator and phase shifter IC, supporting RF input up to 50 MHz and offering 16 discrete 22.5° phase steps per channel with ±0.1° phase accuracy and ±0.05 dB amplitude balance. It enables coherent analog beamforming in CW ultrasound systems and phased array radar by providing current-mode I/Q outputs for direct summation.

For engineers reviewing the AD8333-EVALZ datasheet, AD8333-EVALZ setup, AD8333-EVALZ test configuration, or AD8333-EVALZ compatibility with AD8333 ICs, this board delivers validated signal chain integration for medical imaging, radar beam alignment, and communication receiver development - including full schematic documentation, layout files, and measurement guidance per Rev. F data sheet.

Technical Context

The AD8333-EVALZ implements the full functional interface of the AD8333 IC, featuring dual independent I/Q demodulator channels with asynchronous reset (RSET), chip enable (ENBL), and four-bit phase control (PH10–PH13, PH20–PH23) per channel. It supports both differential 4× LO drive (via 4LOP/4LON) and single-ended LO inputs, with RF inputs (RF1P/N, RF2P/N) dc-coupled to match AD8332 LNA output common-mode voltage (2.5 V).

Board-level design includes ferrite-bead decoupling on ±5 V supplies (VPOS/VNEG), 0.1 µF + 100 pF capacitors at each supply pin, dedicated LO decoupling (LODC), and transimpedance amplifier-ready output nodes (I1PO/Q1PO/I2PO/Q2PO) compatible with high-dynamic-range op-amps like the AD8021.

Key Specifications

Availability

AD8333-EVALZ is available at Aetrix Electronics and suitable for medical ultrasound beamforming validation, radar phased array prototyping, and communication receiver I/Q demodulation testing requiring stable component supply and documented reference design support.

Supply support for AD8333-EVALZ 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.

The AD8333-EVALZ belongs to Analog Devices' RF and microwave evaluation platform product line, engineered to accelerate development of coherent analog signal processing circuits - particularly for beamforming, Doppler ultrasound, and quadrature receiver architectures.

FAQ

What is the AD8333-EVALZ used for?

The AD8333-EVALZ is an evaluation board designed exclusively for the AD8333 dual I/Q demodulator and phase shifter IC. It provides a fully assembled, tested platform to validate RF demodulation, 16-step phase shifting (22.5° increments), and analog beamforming functionality - with documented schematics, layout files, and measurement procedures included in the AD8333 Rev. F data sheet. Engineers use AD8333-EVALZ to prototype medical CW ultrasound receivers and phased array radar front-ends before custom PCB design.

Does the AD8333-EVALZ include the AD8333 IC?

Yes, the AD8333-EVALZ includes one mounted AD8333 IC in a 32-lead LFCSP package (5 mm × 5 mm), as confirmed in the "Evaluation Board" section (page 27) and "Ordering Guide" (page 32) of the AD8333 Rev. F data sheet. The board is pre-populated and ready for immediate RF signal injection, LO drive, and I/Q output measurement without component substitution.

What power supplies does the AD8333-EVALZ require?

The AD8333-EVALZ requires dual ±5 V supplies, consistent with the AD8333 IC's specified operating range (±4.5 V to ±6 V). Each VPOS and VNEG pin is decoupled using a ferrite bead in series plus parallel 0.1 µF and 100 pF capacitors to ground, as detailed in Table 3 (Pin Function Descriptions) and Figure 5 of the AD8333 Rev. F data sheet. This ensures stable biasing for low-noise demodulation performance.

Can the AD8333-EVALZ be used with single-ended LO signals?

Yes, the AD8333-EVALZ supports single-ended LO drive via either 4LOP or 4LON pins, provided correct dc biasing is applied - as explicitly stated in the "LO Inputs" description (Table 3, page 7) and Figure 4 of the AD8333 Rev. F data sheet. Minimum LO level depends on RF frequency (e.g., ≥0 dBm at 5 MHz, per Figure 22), and performance remains within specification when following the documented single-ended interface guidelines.

Where can I find the schematic and layout files for the AD8333-EVALZ?

Schematic diagrams, PCB artwork, and board layout details for the AD8333-EVALZ are provided in the AD8333 Rev. F data sheet - specifically in the "Evaluation Board Schematic and Artwork" section (page 29) and "Board Layout" section (page 31). These resources are publicly available on analog.com and include layer stack-up, component placement, and routing practices optimized for RF integrity and phase matching between the two AD8333-EVALZ channels.