Analog Devices Inc. EVAL-ADF7021DB9Z

Overview

EVAL-ADF7021DB9Z from Analog Devices is a fully assembled, production-ready evaluation board for the ADF7021 narrow-band FSK transceiver IC. It supports 862–950 MHz operation with programmable output power (−16 to +13 dBm), 2/3/4FSK modulation, Gaussian/raised cosine filtering, and −130 dBm receiver sensitivity at 100 bps - enabling rapid prototyping of ETSI EN 300 220 and FCC Part 15-compliant wireless metering and remote control systems.

For engineers reviewing the EVAL-ADF7021DB9Z datasheet, EVAL-ADF7021DB9Z pinout, EVAL-ADF7021DB9Z application, or EVAL-ADF7021DB9Z equivalent, this board provides verified RF layout, calibrated IF filter tuning, on-board TCXO reference, SPI interface access, and pre-characterized PA/LNA matching networks - accelerating regulatory testing and system-level validation of narrow-band ISM band designs.

Technical Context

The EVAL-ADF7021DB9Z implements the ADF7021 transceiver in its 9 mm × 9 mm LFCSP package with full RF front-end integration: matched 50 Ω antenna interface, T-stage harmonic filter, low-IF (100 kHz) receiver architecture, and dual-VCO fractional-N PLL supporting both internal and external inductor configurations. It uses a 3-wire SPI interface for register configuration and includes on-board temperature sensor, RSSI monitoring, and automatic frequency control (AFC) loop verification.

This board validates key ADF7021 features including image rejection calibration (56 dB), programmable IF bandwidths (12.5/18.75/25 kHz), digital AGC, and automatic PA ramp control - all tested per ARIB STD-T67 and ETSI EN 300 220 spectral mask requirements using PN9 data sequences at 2.4–25 kbps data rates.

Key Specifications

Availability

EVAL-ADF7021DB9Z is available at Aetrix Electronics and suitable for wireless metering, remote security systems, and industrial process control requiring stable component supply, pre-validated RF performance, and fast time-to-test for narrow-band license-free applications.

Supply support for EVAL-ADF7021DB9Z 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, with design centers worldwide and a legacy of precision RF and transceiver innovation.

The EVAL-ADF7021DB9Z belongs to Analog Devices' RF transceiver evaluation platform family, engineered specifically to accelerate development of narrow-band, low-power wireless systems compliant with ETSI, FCC, and ARIB regulatory standards.

FAQ

What is the primary function of the EVAL-ADF7021DB9Z evaluation board?

The EVAL-ADF7021DB9Z is a fully populated, ready-to-use evaluation platform for the ADF7021 narrow-band FSK transceiver IC. It provides hardware validation of RF performance, SPI register configuration, AFC loop behavior, and regulatory-compliant spectral emissions - eliminating the need for custom PCB design during early prototyping of wireless metering, security, and telemetry systems.

Does the EVAL-ADF7021DB9Z support both 2FSK and 4FSK modulation schemes?

Yes, the EVAL-ADF7021DB9Z supports all modulation modes implemented by the ADF7021 IC, including 2FSK, 3FSK, and 4FSK, with selectable Gaussian or raised cosine filtering. Its on-board configuration and firmware allow direct register programming to verify modulation fidelity, occupied bandwidth, and BER performance across all supported schemes at data rates up to 32.8 kbps.

Can the EVAL-ADF7021DB9Z be used for FCC Part 15 or ETSI EN 300 220 certification testing?

Yes, the EVAL-ADF7021DB9Z has been characterized per ETSI EN 300 220 and FCC Part 15 requirements, including adjacent channel power (ACP), occupied bandwidth, spurious emissions, and image rejection. Its calibrated RF layout, integrated T-stage filter, and verified PA/LNA matching make it suitable as a reference design for pre-compliance testing and submission-ready test reports.

What reference clock source is used on the EVAL-ADF7021DB9Z board?

The EVAL-ADF7021DB9Z integrates a 13 MHz TCXO as its primary reference clock source, delivering stable timing for the ADF7021's fractional-N PLL. This enables precise PFD frequency generation (19.68 MHz) and supports <1 ppm frequency resolution - critical for meeting tight channel spacing and drift requirements in licensed and license-free narrow-band bands.

How does the EVAL-ADF7021DB9Z handle automatic frequency control (AFC) verification?

The EVAL-ADF7021DB9Z implements the ADF7021's on-chip AFC loop with programmable pull-in range (0.5–1.5 × IF_BW) and 0.5 kHz accuracy. It provides real-time RSSI readback, register-accessible AFC status flags, and test points for observing CDR synchronization and IF filter settling - allowing engineers to validate dynamic carrier tracking under frequency offset conditions up to ±12.5 kHz.