Analog Devices Inc. EV-ADF4401ASD2Z

Overview

EV-ADF4401ASD2Z from Analog Devices is an evaluation board designed to characterize the ADF4401A SiP-a translation-loop PLL with integrated VCO, phase frequency detector interface, active loop filter, and USB-controlled configuration. It supports RF output generation from 62.5 MHz to 8 GHz, requires external 6 V power and EVAL-SDP-CS1Z controller, and enables offset-loop performance validation using HMC3716 PFD and LT6200-based differential loop filter.

For engineers reviewing the EV-ADF4401ASD2Z datasheet, EV-ADF4401ASD2Z pinout, EV-ADF4401ASD2Z application, or EV-ADF4401ASD2Z equivalent, this page delivers verified hardware setup requirements, ACE software integration steps, calibration reference (10–500 MHz) and LO source (3–9 GHz) specifications, and functional mode switching between VCO calibration and translation loop operation.

Technical Context

The EV-ADF4401ASD2Z implements a dual-loop architecture: internal calibration loop using ADF4401A's on-die PFD and charge pump, and external offset loop employing HMC3716LP4E as high-frequency PFD with LT6200-based integrator. It integrates seven ADM7150 LDOs (five at 5.0 V, two at 3.3 V) for low-noise biasing of RF, VCO, IF, and digital sections.

Board-level signal routing includes SMA connectors for REFP (10–500 MHz), REF_PF (IF frequency reference), LO (3–9 GHz), and differential RFOUT (RF8P/RF8N). Mode selection is controlled via U15 ADG1609BCPZ multiplexer and GPIO2 (Pin 44 of P4) for doubled LO frequency enable.

Key Specifications

Availability

EV-ADF4401ASD2Z is available at Aetrix Electronics and suitable for RF system validation, PLL architecture prototyping, and VCO calibration testing requiring stable component supply, traceable sourcing, and full documentation support.

Supply support for EV-ADF4401ASD2Z 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 Norwood, MA.

The EV-ADF4401ASD2Z belongs to Analog Devices' precision RF evaluation platform family, engineered specifically to accelerate development of wideband translation-loop synthesizers for test equipment, radar, and communications infrastructure.

FAQ

What is the primary function of the EV-ADF4401ASD2Z evaluation board?

The EV-ADF4401ASD2Z evaluation board is designed exclusively to evaluate the ADF4401A SiP-a translation-loop PLL with integrated VCO. It enables full characterization of calibration mode (VCO autotuning) and translation loop mode (offset synthesis), supporting RF output generation from 62.5 MHz to 8 GHz using external reference and LO sources. The EV-ADF4401ASD2Z does not operate standalone and requires EVAL-SDP-CS1Z and ACE software.

Which external hardware components are mandatory for operating the EV-ADF4401ASD2Z?

Mandatory external hardware includes: EVAL-SDP-CS1Z (SDP-S) controller board for USB communication and register programming; 6 V DC power supply (≤1 A current limit); low-noise REFP source (10–500 MHz); low-noise REF_PF source (IF frequency reference); and ultrahigh-performance LO source (3–9 GHz). SMA terminators (50 Ω) and spectrum analyzer are required for RF output validation. The EV-ADF4401ASD2Z does not include the SDP-S board.

How does the EV-ADF4401ASD2Z support both calibration and translation loop modes?

The EV-ADF4401ASD2Z uses U15 (ADG1609BCPZ) to switch VTUNE path routing: internal loop mode connects charge pump output directly to VTUNE for VCO calibration; translation loop mode routes HMC3716LP4E PFD output through LT6200 integrator to VTUNE. Mode change is software-triggered in ACE, updating GPIO states and physical switch position. Calibration must complete before translation loop activation to ensure VCO stability.

What software and firmware are required to control the EV-ADF4401ASD2Z?

The EV-ADF4401ASD2Z requires Analog Devices' ACE (Analysis | Control | Evaluation) software with the dedicated ADF4401A plugin. Both must be latest-version installed-ACE from the official Analog Devices ACE page, and the plugin either via ACE Plug-in Manager or direct download from the EV-ADF4401ASD2Z product page. Firmware resides on the SDP-S controller; no user-updatable firmware is hosted on the EV-ADF4401ASD2Z board itself.

Can the EV-ADF4401ASD2Z generate differential RF output, and how is it terminated?

Yes-the EV-ADF4401ASD2Z provides differential RF output via SMA connectors RF8P and RF8N. These ports are impedance-sensitive and require matched 50 Ω loads. If only one port is used, the complementary port must be terminated with a 50 Ω SMA terminator to prevent reflection-induced distortion or instability. The board layout maintains matched trace widths (380 µm) and includes RF chokes and matching components per ADF4401A datasheet recommendations.