Datasheet ADL5504 (Analog Devices)

450 MHz to 6000 MHz TruPwr Detector ADL5504 FEATURES FUNCTIONAL BLOCK DIAGRAM True rms response detector VPOS Excellent temperature stability ADL5504 INTERNAL ±0.25 dB rms detection accuracy vs. temperature ENBL FILTERING 1kΩ Over 35 dB input power dynamic range, inclusive of crest factor FLTR RF bandwidths from 450 MHz to 6000 MHz 100Ω RFIN RMS CORE VRMS 500 Ω input impedance Single-supply operation: 2.5 V to 3.3 V BUFFER Low power: 1.8 mA at 3.0 V supply
001
COMM RoHS compliant part
08437- Figure 1.
APPLICATIONS Power measurement of W-CDMA, CDMA2000, QPSK-/QAM- 10 based OFDM (LTE and WiMAX), and other complex modulation waveforms RF transmitter or receiver power measurement 1 (V) T PU T U O 0.1 0.01 –25 –20 –15 –10 –5 0 5 10 15
002
INPUT (dBm)
08437- Figure 2. Output vs. Input Level, 3 V Supply, Frequency 1900 MHz
GENERAL DESCRIPTION
The ADL5504 is a TruPwr™ mean-responding (true rms) power The on-chip modulation filter provides adequate averaging for detector for use in high frequency receiver and transmitter signal most waveforms. For more complex waveforms, an external chains from 450 MHz to 6000 MHz. Requiring only a single capacitor at the FLTR pin can be used for supplementary signal supply between 2.5 V and 3.3 V, the detector draws less than demodulation. An on-chip, 100 Ω series resistance at the output, 1.8 mA. The input is internally ac-coupled and has a nominal combined with an external shunt capacitor, creates a low-pass filter input impedance of 500 Ω. The rms output is a linear-responding response that reduces the residual ripple in the dc output voltage. dc voltage with a conversion gain of 1.87 V/V rms at 900 MHz. The ADL5504 offers excellent temperature stability across a The ADL5504 is a highly accurate, easy to use means of 30 dB range and near 0 dB measurement error across temperature determining the rms of complex waveforms. It can be used for over the top portion of the dynamic range. In addition to its power measurements of both simple and complex waveforms temperature stability, the ADL5504 offers low process variations but is particularly useful for measuring high crest factor (high that further reduce calibration complexity. peak-to-rms ratio) signals, such as W-CDMA, CDMA2000, The power detector operates from −40°C to +85°C and is WiMAX, WLAN, and LTE waveforms. available in a 6-ball, 0.8 mm × 1.2 mm, wafer level chip scale package. It is fabricated on a high fT silicon BiCMOS process.
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Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Circuit Description RMS Circuit Description and Filtering Filtering Output Buffer Applications Information Basic Connections RF Input Interfacing Resistive Tap RF Input Multiple RF Inputs Linearity Output Swing Output Offset Output Drive Capability and Buffering Selecting the Square-Domain Filter and Output Low-Pass Filter Power Consumption, Enable, and Power-On/Power-Off Response Time Device Calibration and Error Calculation Calibration for Improved Accuracy Drift over a Reduced Temperature Range Device Handling Evaluation Board Land Pattern and Soldering Information Outline Dimensions Ordering Guide