Analog Devices Inc. EVAL-ADF7020DBZ2

Overview

EVAL-ADF7020DBZ2 from Analog Devices is an evaluation board for the ADF7020 low-power ISM-band FSK/ASK transceiver IC, supporting 431–478 MHz and 862–956 MHz bands with programmable output power (−16 dBm to +13 dBm), −119 dBm receiver sensitivity at 1 kbps FSK, and 0.15–200 kbps data rates. It enables rapid prototyping of wireless metering, remote control, and home automation systems.

For engineers reviewing the EVAL-ADF7020DBZ2 datasheet, EVAL-ADF7020DBZ2 pinout, EVAL-ADF7020DBZ2 application, or EVAL-ADF7020DBZ2 equivalent, this board provides full access to the ADF7020's 3-wire serial interface, on-chip temperature sensor, RSSI readback, AFC loop, and Gaussian filter configuration - critical for validating regulatory-compliant RF performance in ETSI-300-220 and FCC Part 15 systems.

Technical Context

The EVAL-ADF7020DBZ2 implements the ADF7020's low-IF (200 kHz) architecture with integrated VCO, fractional-N PLL, and on-die 7-bit ADC. It supports both high-sensitivity and high-linearity receiver modes, with automatic frequency control (AFC) compensating for ±25 ppm crystal drift at 433 MHz and ±50 ppm at 868/915 MHz.

Board-level design includes matched LNA/PA networks for 433 MHz, 868 MHz, and 915 MHz bands; external 3.625–24 MHz crystal or oscillator reference input; and configurable IF filter bandwidths (100/150/200 kHz) to trade selectivity against current consumption (19 mA receive, 26.8 mA transmit at 10 dBm).

Key Specifications

Availability

EVAL-ADF7020DBZ2 is available at Aetrix Electronics and suitable for wireless metering, keyless entry, and industrial process control applications requiring stable component supply, regulatory test support, and fast time-to-demo.

Supply support for EVAL-ADF7020DBZ2 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 RF ICs, headquartered in Norwood, MA, serving industrial, communications, automotive, and healthcare markets since 1965.

The EVAL-ADF7020DBZ2 belongs to Analog Devices' RF transceiver evaluation platform family, designed specifically to accelerate development of license-free ISM band wireless links compliant with ETSI, FCC, and SRD regulations.

FAQ

What is the primary function of the EVAL-ADF7020DBZ2 evaluation board?

The EVAL-ADF7020DBZ2 evaluation board is a fully assembled and tested hardware platform for the ADF7020 FSK/ASK transceiver IC. It enables engineers to validate RF performance, configure registers via the 3-wire serial interface, measure real-world sensitivity and output power, and prototype end applications such as remote sensors and security systems - all without custom PCB design. The board includes matching networks, crystal reference, and test points aligned with the ADF7020 datasheet Rev. E test conditions.

Does the EVAL-ADF7020DBZ2 support both 433 MHz and 868 MHz bands simultaneously?

No, the EVAL-ADF7020DBZ2 is configured for one frequency band at a time, with discrete matching components optimized per band. It supports 431–478 MHz and 862–956 MHz ranges, but requires manual reconfiguration of LNA/PA matching networks and crystal load capacitance to switch between bands. Band-specific calibration data and layout guidelines are provided in the ADF7020 datasheet Rev. E, Sections 25–27.

How is the ADF7020's automatic frequency control (AFC) validated on the EVAL-ADF7020DBZ2?

The EVAL-ADF7020DBZ2 validates AFC functionality using the ADF7020's built-in loop that compensates for crystal tolerance drift: ±25 ppm at 433 MHz and ±50 ppm at 868/915 MHz. Test procedures in the ADF7020 datasheet Rev. E (Section 23) specify measuring pull-in range (±25/±50 kHz), response time (48 bits), and accuracy (±1 kHz) using known-frequency RF signal generators and spectrum analyzers connected to the RFOUT and RFIN ports.

Can the EVAL-ADF7020DBZ2 be used to evaluate GFSK modulation?

Yes, the EVAL-ADF7020DBZ2 fully supports Gaussian Frequency Shift Keying (GFSK) as defined in the ADF7020 datasheet Rev. E. It implements the required Gaussian filter (BT = 0.5), allows deviation tuning via Register 2, and delivers verified performance up to 200 kbps. Timing diagrams (Figure 5) and register settings for GFSK mode are implemented and testable using the board's DATA I/O and DATA CLK pins with standard microcontroller firmware.

What power supply requirements does the EVAL-ADF7020DBZ2 have?

The EVAL-ADF7020DBZ2 operates from a single 2.3 V to 3.6 V DC supply, matching the ADF7020 IC's voltage range. It draws 19 mA in receive mode and 26.8 mA at 10 dBm transmit output (VDD = 3.0 V, TA = 25°C), with <1 μA leakage in power-down. Board-level decoupling uses 0.1 μF and 10 nF capacitors per supply rail, as specified in the ADF7020 datasheet Rev. E Pin Configuration section (Table 4).