Analog Devices Inc. EVAL-ADF7021-NDBZ2

Overview

EVAL-ADF7021-NDBZ2 from Analog Devices is an evaluation board for the ADF7021-N narrow-band FSK transceiver IC, supporting 80–650 MHz and 842–916 MHz bands with programmable IF filter bandwidths (9/13.5/18.5 kHz), 2FSK/3FSK/4FSK modulation, and −130 dBm sensitivity at 100 bps. It enables rapid prototyping of SRD-compliant wireless metering, medical telemetry, and home automation systems.

For engineers reviewing the EVAL-ADF7021-NDBZ2 datasheet, EVAL-ADF7021-NDBZ2 pinout, EVAL-ADF7021-NDBZ2 application, or EVAL-ADF7021-NDBZ2 equivalent, this board provides validated RF layout, calibrated image rejection, integrated Tx/Rx switch, on-board TCXO reference, and full register-level control via 3-wire serial interface - critical for FCC Part 15/ETSI EN 300 220 compliance validation and low-power system integration.

Technical Context

The EVAL-ADF7021-NDBZ2 implements the ADF7021-N transceiver in a production-ready RF layout with matched LNA/PA networks, calibrated dual-VCO synthesizer (internal LC tank for 842–916 MHz; external inductor for 80–650 MHz), and low-IF (100 kHz) receiver architecture. It integrates automatic frequency control (AFC), digital RSSI, on-chip 7-bit ADC for temperature/battery monitoring, and Gaussian/raised cosine spectral shaping.

Board-level features include T-stage harmonic filtering, 0.1 µA power-down leakage, programmable output power (−16 to +13 dBm in 63 steps), and support for dynamic modulation switching among 2FSK/3FSK/4FSK to optimize range vs. throughput. All timing-critical paths (Tx-to-Rx turnaround: 390 µs + 5×tBIT) are validated per ADF7021-N Rev. B specifications.

Key Specifications

Availability

EVAL-ADF7021-NDBZ2 is available at Aetrix Electronics and suitable for wireless metering, medical telemetry, and building automation requiring stable component supply, regulatory pre-compliance validation, and rapid RF subsystem bring-up.

Supply support for EVAL-ADF7021-NDBZ2 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 EVAL-ADF7021-NDBZ2 belongs to Analog Devices' RF transceiver evaluation platform family, designed specifically to accelerate development of narrow-band, license-free ISM band applications compliant with ARIB STD-T67, ETSI EN 300 220, FCC Part 15/90/95, and WMTS standards.

FAQ

What is the primary function of the EVAL-ADF7021-NDBZ2?

The EVAL-ADF7021-NDBZ2 is an evaluation board for the ADF7021-N narrow-band FSK transceiver IC. It provides a fully assembled, tested, and calibrated hardware platform to evaluate RF performance, validate register programming, verify modulation fidelity, and prototype end applications such as utility metering and wireless sensor networks. The board includes all necessary matching networks, filters, clock sources, and interface circuitry required to operate the ADF7021-N per its datasheet specifications.

Does the EVAL-ADF7021-NDBZ2 support both frequency bands listed in the ADF7021-N datasheet?

Yes, the EVAL-ADF7021-NDBZ2 supports both operational bands: 80–650 MHz using the external inductor VCO and 842–916 MHz using the internal LC-tank VCO. Board layout and component selection (including VCO biasing networks and matching components) are optimized for verified performance across both ranges, as confirmed by Analog Devices' characterization using the EVAL-ADF7021-NDBxx series referenced in the ADF7021-N Rev. B datasheet.

Can the EVAL-ADF7021-NDBZ2 be used for FCC or ETSI regulatory pre-compliance testing?

Yes, the EVAL-ADF7021-NDBZ2 implements key features required for regulatory validation: calibrated image rejection (56 dB), integrated T-stage harmonic filtering, programmable output power (−16 to +13 dBm), Gaussian/raised cosine spectral shaping, and AFC loop - all aligned with test conditions specified for ARIB STD-T67, ETSI EN 300 220, and FCC Part 15. While final certification requires system-level testing, this board provides a representative RF front-end for pre-compliance margin analysis.

What interface does the EVAL-ADF7021-NDBZ2 use to communicate with a host controller?

The EVAL-ADF7021-NDBZ2 uses a 3-wire serial interface (SCLK, SDATA, SLE) plus chip enable (CE) to communicate with a host microcontroller or DSP. This matches the native serial port of the ADF7021-N IC and supports full bidirectional register access (R0–R15), including configuration of modulation schemes, IF filter bandwidth, VCO settings, and calibration registers - as defined in the ADF7021-N Rev. B datasheet sections on Serial Interface and Register Descriptions.

Does the EVAL-ADF7021-NDBZ2 include on-board calibration support for the ADF7021-N?

Yes, the EVAL-ADF7021-NDBZ2 supports all on-chip calibration routines documented for the ADF7021-N, including image rejection calibration (IR CAL), IF filter fine calibration, and VCO/oscillator tuning. The board provides stable reference clocking (via on-board TCXO), proper bias sequencing, and low-noise power delivery - enabling reliable execution of calibration sequences described in the ADF7021-N Rev. B datasheet Applications Information section without external instrumentation.