Analog Devices Inc. EVAL-ADF7020-1DBZ4

Overview

EVAL-ADF7020-1DBZ4 from Analog Devices is an evaluation board for the ADF7020-1 low-power FSK/ASK transceiver IC, supporting 135–650 MHz direct output and 80–325 MHz divide-by-2 mode, with programmable output power (−20 to +13 dBm), −119 dBm sensitivity at 1 kbps FSK (315 MHz), and integrated TRx switch, on-chip VCO, fractional-N PLL, 7-bit ADC, and temperature sensor - used for rapid prototyping of wireless metering, remote security, and home automation systems.

For engineers reviewing the EVAL-ADF7020-1DBZ4 datasheet, EVAL-ADF7020-1DBZ4 pinout, EVAL-ADF7020-1DBZ4 application, or EVAL-ADF7020-1DBZ4 equivalent, this page delivers verified functional context, supply-chain support, real-world RF performance benchmarks, and hardware-level integration guidance specific to the ADF7020-1 transceiver evaluation platform.

Technical Context

The EVAL-ADF7020-1DBZ4 implements a complete reference design for the ADF7020-1 transceiver, featuring matched LNA/PA front-end networks, calibrated IF filter bandwidths (100/150/200 kHz), and full serial interface access (SCLK/SDATA/SLE/SREAD/INT/LOCK) to all 14 internal registers. It supports both FSK (0.15–200 kbps) and ASK (0.15–64 kbps) modulation schemes with Gaussian filtering (BT = 0.5) and automatic frequency control (AFC) loop compensation for ±50 kHz pull-in range.

Board-level architecture includes external VCO inductors (L1/L2), crystal oscillator circuit (OSC1/OSC2, 3.625–24 MHz), regulated power domains (CREG1/CREG2/CREG3/CREG4), and analog monitoring points (ADCIN, RSSI readback, temperature sensor). All critical RF paths are impedance-controlled, with RFIN/RFINB differential input and RFOUT single-ended output matched to 50 Ω.

Key Specifications

Availability

EVAL-ADF7020-1DBZ4 is available at Aetrix Electronics and suitable for wireless medical devices, remote security systems, and smart metering applications requiring stable component supply, pre-validated RF layout, and full register-level debug capability.

Supply support for EVAL-ADF7020-1DBZ4 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, with deep expertise in precision signal processing and wireless connectivity solutions.

The EVAL-ADF7020-1DBZ4 belongs to Analog Devices' RF transceiver evaluation platform family, designed specifically to accelerate development of sub-GHz ISM band wireless systems targeting cost-sensitive, battery-powered, and regulatory-compliant applications.

FAQ

What is the primary function of the EVAL-ADF7020-1DBZ4 evaluation board?

The EVAL-ADF7020-1DBZ4 is a fully assembled and tested evaluation platform for the ADF7020-1 transceiver IC. It provides immediate access to all critical signals - including SCLK, SDATA, SLE, SREAD, INT/LOCK, DATA I/O, and RF ports - enabling rapid validation of FSK/ASK modulation, AFC loop behavior, RSSI linearity, and register programming sequences without custom PCB design. The board ships with preloaded firmware examples and reference schematics aligned to the ADF7020-1 Rev. A datasheet.

Does the EVAL-ADF7020-1DBZ4 support both FSK and ASK modulation out-of-the-box?

Yes, the EVAL-ADF7020-1DBZ4 supports both FSK and ASK modulation natively through the ADF7020-1's dual-mode demodulator architecture. Register 2 configures modulation type (FSK vs. ASK), deviation (1–620 kHz), and Gaussian filtering (BT = 0.5). Verified test data in the datasheet (Table 1, Figure 12) confirms clean spectral output for ASK/OOK/GOOK at 10 kbps and FSK/GFSK up to 200 kbps - all reproducible on the EVAL-ADF7020-1DBZ4 using standard microcontroller interface timing.

Can the EVAL-ADF7020-1DBZ4 operate across the full 80–650 MHz frequency range?

No - the EVAL-ADF7020-1DBZ4 is configured for fixed-frequency operation at 315 MHz and 433 MHz by default, using optimized L1/L2 inductor values and matching networks per Table 5 of the ADF7020-1 datasheet. To operate outside these bands (e.g., 135 MHz or 650 MHz), users must replace L1/L2 with custom-selected chip inductors and re-tune the LNA/PA matching per Section "LNA/PA Matching" (Page 25), as the board's layout and component values are not broadband.

What power supply requirements does the EVAL-ADF7020-1DBZ4 have?

The EVAL-ADF7020-1DBZ4 requires a single 2.3–3.6 V DC supply, delivered via the on-board screw terminal or USB-powered debug interface. Internal LDOs generate regulated voltages for PA (CREG1), LNA/MIXER (CREG4), digital core (CREG2), and PLL (CREG3), each decoupled with specified capacitor networks (e.g., 100 nF + 5.1 pF). Total active current draw is 21 mA (Tx, 10 dBm) or 20.1 mA (Rx, high-sensitivity mode) at 3 V, per Table 1.

Is antenna connection supported directly on the EVAL-ADF7020-1DBZ4 board?

Yes - the EVAL-ADF7020-1DBZ4 provides SMA connectors for both transmit (RFOUT) and receive (RFIN/RFINB) paths, with 50 Ω impedance-matched microstrip traces. The RFIN/RFINB differential input supports balanced antenna interfaces or off-board baluns; RFOUT is single-ended and requires external matching for non-50 Ω loads. Layout follows Analog Devices' RF best practices, including ground plane isolation and controlled trace lengths per Figure 6 and Section "LNA/PA Matching".