Analog Devices Inc. AD8362-EVALZ

Overview

AD8362-EVALZ from Analog Devices is an evaluation board for the AD8362 true RMS power detector IC, enabling rapid characterization of RF power measurement performance across 50 Hz to 3.8 GHz. It supports differential and single-ended input drive, delivers 65 dB dynamic range (−52 dBm to +8 dBm), and provides linear-in-dB output (50 mV/dB) with ±0.5 dB law conformance error - ideal for transmitter power control and RF instrumentation validation.

For engineers reviewing the AD8362-EVALZ datasheet, AD8362-EVALZ setup guide, AD8362-EVALZ test configuration, or AD8362-EVALZ signal path calibration, this board enables fast verification of rms-to-dc conversion accuracy, temperature stability, crest factor handling (e.g., W-CDMA, IS95), and power-down timing (2.5 µs disable, 14.5 ns enable) under real-world RF stimulus.

Technical Context

The AD8362-EVALZ implements a complete, fully calibrated measurement system for the AD8362 IC - a monolithic true RMS detector using square-law detection architecture with closed-loop averaging via CLPF/CHPF filtering. It accommodates both differential (200 Ω) and single-ended (100 Ω) RF inputs, supports VTGT-adjustable logarithmic intercept, and integrates VREF (1.25 V) and PWDN logic control.

Designed for lab and benchtop use, the board includes SMA connectors for INHI/INLO, provisioned test points for all critical pins (VOUT, VSET, VTGT, PWDN), and configurable loop filter capacitors (CLPF, CHPF) to optimize bandwidth and ripple for CW or modulated signals including OFDM and QAM waveforms up to 3.8 GHz.

Key Specifications

Availability

AD8362-EVALZ is available at Aetrix Electronics and suitable for RF power meter development, wireless base station transmitter validation, and 5G NR front-end characterization requiring stable component supply and documented evaluation infrastructure.

Supply support for AD8362-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, with deep expertise in RF, precision measurement, and signal chain solutions.

The AD8362-EVALZ belongs to Analog Devices' RF & Microwave Evaluation Platform family, designed specifically to accelerate prototyping and validation of true RMS power detectors in communication infrastructure and test equipment applications.

FAQ

What is the primary function of the AD8362-EVALZ?

The AD8362-EVALZ is an evaluation board purpose-built to characterize the AD8362 true RMS power detector IC. It provides all necessary signal conditioning, power routing, and test point access to validate key performance metrics - including dynamic range, logarithmic slope (50 mV/dB), law conformance (±0.5 dB), and temperature stability - across its full 50 Hz to 3.8 GHz operating band. The AD8362-EVALZ does not operate standalone; it requires connection to the AD8362 IC and external instrumentation.

Does the AD8362-EVALZ support both differential and single-ended RF inputs?

Yes, the AD8362-EVALZ supports both configurations. It features SMA connectors for differential drive on INHI and INLO pins (200 Ω input impedance), and includes resistor networks to enable verified single-ended operation (100 Ω input impedance) as specified in the AD8362 datasheet Rev. F. Layout and component selection follow Analog Devices' recommended matching networks for frequencies up to 3.65 GHz.

How is the CLPF capacitor used on the AD8362-EVALZ?

On the AD8362-EVALZ, the CLPF (Capacitor Loop Filter) pad connects to the AD8362's CLPF pin (Pin 9) to set the integration time constant for RMS averaging. A typical value is 1000 pF, yielding ~2.5 µs rise time and <0.5 dB ripple in measurement mode. Larger values reduce wideband noise but increase settling time; smaller values improve response speed at the cost of increased output ripple. The AD8362-EVALZ provides solder pads for user-selected capacitor placement.

Can the AD8362-EVALZ be used to evaluate temperature performance?

Yes - the AD8362-EVALZ is compatible with environmental chamber testing and includes thermal relief design for stable operation from −40°C to +85°C. Its layout preserves the AD8362's inherent temperature stability, and test points allow monitoring of VOUT, VTGT, and VREF under thermal stress. Data from Figures 10–12 and 18–20 in the AD8362 datasheet Rev. F confirm ≤±1.7 dB deviation over temperature at 900 MHz, which the AD8362-EVALZ enables direct verification of.

Is the AD8362-EVALZ RoHS-compliant and lead-free?

Yes, the AD8362-EVALZ conforms to RoHS Directive 2011/65/EU and uses lead-free PCB finish and components. This compliance is consistent with Analog Devices' manufacturing standards for evaluation platforms, as documented in the AD8362 product ordering guide and material declarations. No exemptions apply, and the board carries full traceability for industrial and telecom-grade deployment.