会社ブログについて ADI AD8364-EVALZ Dual 60 dB TruPwr™ Power Detector Evaluation Board

ADI AD8364-EVALZ Dual 60 dB TruPwr™ Power Detector Evaluation Board

Shenzhen Mingjiada Electronics Co., Ltd., as a globally renowned distributor of electronic components, supplies the ADI AD8364-EVALZ evaluation board—a solution specifically designed for dual-channel 60 dB TruPwr™ RF power measurement.

The AD8364-EVALZ evaluation board primarily serves to evaluate and test the AD8364 dual-channel true RMS RF power detector. Operating at frequencies up to 2.7 GHz with an input range spanning -55 dBm to +5 dBm, it addresses diverse application requirements including wireless infrastructure, antenna VSWR monitoring, and gain control.

【Core Features of the AD8364-EVALZ Evaluation Board】

The AD8364-EVALZ is a fully configured, four-layer FR4 substrate evaluation board for assessing the AD8364 TruPwr™ power detector.

The AD8364-EVALZ requires a 5V/100mA power supply for normal operation, with two RF input signals fed via board-mounted SMA connectors.

Output signals are accessible via OUTA, OUTB, OUTN, OUTP, and the TEMP tap, facilitating diverse measurements.

【Core Technical Features of the AD8364 Chip】

The AD8364 is a true RMS-responsive dual-channel RF power measurement subsystem, specifically designed for precise signal power measurement and control.

Broad Frequency Coverage

The chip supports operating frequencies from low-level signals up to 2.7GHz, covering the vast majority of wireless communication bands.

Extensive Dynamic Range

The AD8364 offers a linear dynamic range of 60dB, enabling precise measurement of input signal root mean square (RMS) power from -55dBm to +5dBm (relative to 50Ω).

Accuracy remains unaffected even when handling complex signals with large peak-to-average power ratios.

Exceptional Measurement Accuracy

The AD8364 delivers ±0.5dB measurement accuracy across its entire dynamic range, ensuring reliable RF power measurements.

Highly Integrated Design

The chip incorporates two matched AD8362 channels internally, offering improved temperature performance and reduced logarithmic consistency variation.

Compared to discrete solutions, the precision matching of both channels significantly minimises temperature drift and inter-device variation.

Flexible Output Configuration

The AD8364 provides a linear dB RMS measurement output with a slope of 50mV/dB.

Users can obtain independent RMS outputs or measure the difference between the two channels.

Temperature Monitoring Function

The chip also incorporates a useful temperature sensor whose voltage is proportional to temperature, aiding system temperature compensation and monitoring.

Operating Voltage

The AD8364 operates from a single 5V supply, with each channel drawing 70mA.

【AD8364-EVALZ Technical Advantages】

The AD8364-EVALZ is a true RMS response dual-channel RF power measurement subsystem for precise signal power measurement and control.

Its flexibility enables engineers to readily monitor and control communication systems, such as RF power amplifiers and automatic gain control circuits in radio transceivers.

Each channel is fully specified over a 2.7GHz range with 60dB dynamic range, providing two accurately scaled, independent RMS outputs for RF measurement.

On-chip channel matching ensures exceptional stability of RMS channel differential output across temperature and process variations, and incorporates a useful temperature sensor.

【AD8364-EVALZ Evaluation Board Hardware Design and Functionality】

The AD8364-EVALZ is an evaluation board specifically designed by ADI for the AD8364 chip, enabling engineers to rapidly evaluate and validate the AD8364's performance.

The AD8364-EVALZ evaluation board provides all necessary interfaces and configuration options, enabling users to conveniently connect RF signal sources and test equipment to intuitively observe the AD8364's performance under various operating conditions.

The AD8364-EVALZ evaluation board employs a meticulously designed PCB layout to ensure RF signal integrity and minimise the impact of external interference on measurement accuracy.

The on-board power management circuitry supplies the AD8364 chip with a stable, clean power supply, which is crucial for achieving high-precision measurements.

The AD8364-EVALZ evaluation board also incorporates the necessary decoupling capacitors and bias networks, allowing users to comprehensively evaluate the chip's functionality without designing complex peripheral circuits.

【AD8364-EVALZ Application Domains and Typical Cases】

The AD8364-EVAL evaluation board primarily targets diverse power measurement and control applications within wireless communication infrastructure.

Wireless Infrastructure Power Amplifier Linearisation/Control

Within base station systems, the AD8364-EVALZ enables precise control of power amplifier output, enhancing efficiency while maintaining spectral purity.

This is particularly critical for systems employing complex modulation techniques such as CDMA2000, W-CDMA, and TD-SCDMA.

Antenna VSWR (Voltage Standing Wave Ratio) Monitoring

By simultaneously measuring forward and reflected power, the AD8364-EVALZ enables real-time monitoring of antenna VSWR, facilitating early detection of faults or degradation in antenna systems.

Transmitter Power Control

The AD8364-EVALZ provides precise transmit signal strength indication for use in closed-loop power control systems.

Automatic Gain Control (AGC) Circuitry

Within radio transceivers, the AD8364-EVALZ enables high-performance automatic gain control, ensuring signal chain stability and linearity.

Dual-Channel Wireless Infrastructure Radio

With its dual-channel measurement capability, the AD8364-EVALZ is well-suited for multi-antenna systems such as MIMO and smart antenna systems.

Mingjiada Electronics maintains long-term supply of other ADI evaluation board components, including but not limited to the following models:

EVAL-ADAQ7980SDZ

EVAL-CN0216-ARDZ

EVAL-CN0304-SDZ

EVAL-CN0349-PMDZ

EVAL-CN0535-FMCZ

EVAL-AD4002FMCZ

EVAL-AD5592R-1SDZ

SCP-LT8604C-BEVALZ

ADPL12010EVKIT

EV-DPS-PWRBD1Z

EVAL-LT8349-BZ

EVAL-LTC7897-AZ

MAXM20344EVKIT

EVAL-LT8210-1-AZ

EVAL-LTC9111-AZ

ADPL42005CPZ-REDYKIT

EVAL-LT7826-AZ

EVAL-LT8643SA-AZ

EVAL-LTC7899-AZ

EVAL-LTM4719-AZ