Analog Devices Inc. ADL5501-EVALZ

Overview

ADL5501-EVALZ from Analog Devices is an evaluation board designed to characterize the ADL5501 TruPwr™ true RMS RF power detector IC - a 50 MHz to 6 GHz mean-responding detector with 6.3 V/V rms conversion gain at 900 MHz, ±1 dB error over 24–35 dB dynamic range (depending on supply and frequency), and internal 50 Ω input impedance. It supports rapid validation of RF transmitter/receiver power measurement in W-CDMA, LTE, and OFDM-based systems.

For engineers reviewing the ADL5501-EVALZ datasheet, ADL5501-EVALZ layout, ADL5501-EVALZ test setup, or ADL5501-EVALZ signal integrity performance, this board provides fully populated, impedance-controlled RF paths, calibrated SMA connectors, on-board decoupling, and configurable FLTR/COUT filtering - enabling accurate, repeatable characterization of ADL5501's RMS response, temperature stability, and crest-factor tolerance across complex modulated waveforms.

Technical Context

The ADL5501-EVALZ implements the ADL5501 IC in a 6-lead SC-70 package with matched 50 Ω microstrip input trace, grounded coplanar waveguide routing, and dual-stage low-pass filtering via on-board COUT (100 nF) and optional CFLTR (0–1 nF). It supports single-supply operation from 2.7 V to 5.5 V and enables direct oscilloscope monitoring of VRMS output with minimal loading.

Board-level design incorporates RF pulse response validation (Figure 30–33), enable-gating timing analysis (Figure 34–38), and multi-frequency linearity verification (Figures 4–8, 13–21). The layout follows Analog Devices' recommended practices for high-frequency RMS detectors, including isolated ground planes, minimized parasitic inductance at RFIN/VRMS, and thermal relief for ENBL and COMM pins.

Key Specifications

Availability

ADL5501-EVALZ is available at Aetrix Electronics and suitable for RF power calibration labs, 5G baseband development, cellular infrastructure prototyping, and wireless test equipment design requiring stable component supply and traceable evaluation hardware.

Supply support for ADL5501-EVALZ 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 ADL5501-EVALZ belongs to Analog Devices' RF & Microwave Evaluation Platform family, engineered specifically to accelerate validation of TruPwr™ RMS detectors in high-crest-factor, wideband RF systems - not general-purpose development boards.

FAQ

What is the primary function of the ADL5501-EVALZ?

The ADL5501-EVALZ is a dedicated evaluation platform for the ADL5501 true RMS RF power detector IC. It enables engineers to measure and validate the device's RMS response, dynamic range, temperature stability, and waveform fidelity across 50 MHz–6 GHz - using real-world signals like W-CDMA, QPSK, and 64QAM without requiring custom PCB design. The ADL5501-EVALZ includes calibrated RF paths, filtering options, and test points aligned to ADL5501's functional block diagram.

Does ADL5501-EVALZ support both CW and modulated RF inputs?

Yes, ADL5501-EVALZ fully supports both continuous-wave (CW) and complex modulated inputs such as QPSK, 16QAM, 64QAM, W-CDMA, and CDMA2000 waveforms - as confirmed by Figures 22–28 in the ADL5501 datasheet Rev. B. Its layout preserves signal integrity up to 6 GHz, and the on-board FLTR/COUT configuration allows optimization for crest factor >10 signals. The ADL5501-EVALZ was used to generate all modulated waveform data shown in those figures.

Can ADL5501-EVALZ be used with different supply voltages?

Yes, ADL5501-EVALZ supports the full ADL5501 operating supply range of 2.7 V to 5.5 V. Test points and jumper options allow direct connection to external lab supplies or LDOs. Performance curves in Figure 8 (output vs. input level at 2.7 V, 3.0 V, 5.0 V, 5.5 V) were generated using the ADL5501-EVALZ platform, confirming stable operation and predictable dynamic range scaling across voltage.

How is RF input return loss characterized on ADL5501-EVALZ?

ADL5501-EVALZ achieves ≥10.1 dB input return loss from 50 MHz to 6 GHz, matching the ADL5501 IC's intrinsic performance (Figure 9). This is achieved via a 50 Ω microstrip feedline with controlled impedance, SMA launch, and optimized ground plane clearance - all validated during board fabrication. Measured return loss values are consistent with ADL5501's specified input impedance (e.g., +86||−0.1 Ω||pF at 6 GHz).

Is the ADL5501-EVALZ RoHS-compliant and production-ready?

Yes, ADL5501-EVALZ is RoHS-compliant and manufactured to Analog Devices' qualified evaluation board standards. It uses lead-free HASL finish, IPC-Class 2 assembly, and conforms to JEDEC moisture sensitivity level (MSL) requirements for the ADL5501 IC. While intended for lab evaluation, its layout, BOM, and documentation are production-grade - enabling direct reuse of RF routing and filtering strategies in final system designs.