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ADL5504 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADL5504
Beschreibung 450 MHz to 6000 MHz TruPwr Detector
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 24 Seiten
ADL5504 Datasheet, Funktion
FEATURES
True rms response detector
Excellent temperature stability
±0.25 dB rms detection accuracy vs. temperature
Over 35 dB input power dynamic range, inclusive of crest factor
RF bandwidths from 450 MHz to 6000 MHz
500 Ω input impedance
Single-supply operation: 2.5 V to 3.3 V
Low power: 1.8 mA at 3.0 V supply
RoHS compliant part
APPLICATIONS
Power measurement of W-CDMA, CDMA2000, QPSK-/QAM-
based OFDM (LTE and WiMAX), and other complex
modulation waveforms
RF transmitter or receiver power measurement
450 MHz to 6000 MHz
TruPwr Detector
ADL5504
FUNCTIONAL BLOCK DIAGRAM
VPOS
ENBL
RFIN
ADL5504
1k
RMS CORE
INTERNAL
FILTERING
100
BUFFER
FLTR
VRMS
COMM
Figure 1.
10
1
0.1
www.DaGtaESNhEeeRt4AUL.cDomESCRIPTION
The ADL5504 is a TruPwr™ mean-responding (true rms) power
detector for use in high frequency receiver and transmitter signal
chains from 450 MHz to 6000 MHz. Requiring only a single
supply between 2.5 V and 3.3 V, the detector draws less than
1.8 mA. The input is internally ac-coupled and has a nominal
input impedance of 500 Ω. The rms output is a linear-responding
dc voltage with a conversion gain of 1.87 V/V rms at 900 MHz.
The ADL5504 is a highly accurate, easy to use means of
determining the rms of complex waveforms. It can be used for
power measurements of both simple and complex waveforms
but is particularly useful for measuring high crest factor (high
peak-to-rms ratio) signals, such as W-CDMA, CDMA2000,
WiMAX, WLAN, and LTE waveforms.
0.01
–25 –20 –15 –10
–5
0
INPUT (dBm)
5 10 15
Figure 2. Output vs. Input Level, 3 V Supply, Frequency 1900 MHz
The on-chip modulation filter provides adequate averaging for
most waveforms. For more complex waveforms, an external
capacitor at the FLTR pin can be used for supplementary signal
demodulation. An on-chip, 100 Ω series resistance at the output,
combined with an external shunt capacitor, creates a low-pass filter
response that reduces the residual ripple in the dc output voltage.
The ADL5504 offers excellent temperature stability across a
30 dB range and near 0 dB measurement error across temperature
over the top portion of the dynamic range. In addition to its
temperature stability, the ADL5504 offers low process variations
that further reduce calibration complexity.
The power detector operates from −40°C to +85°C and is
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.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2009 Analog Devices, Inc. All rights reserved.






ADL5504 Datasheet, Funktion
ADL5504
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
Supply Voltage, VS
VRMS, ENBL
RFIN
Equivalent Power, Referred to 50 Ω
Internal Power Dissipation
θJA (WLCSP)
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Rating
3.5 V
0 V to VS
1.25 V rms
15 dBm
150 mW
260°C/W
125°C
−40°C to +85°C
−65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
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Rev. 0 | Page 6 of 24

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ADL5504 pdf, datenblatt
ADL5504
400mV rms RF INPUT
PULSED RFIN
250mV rms
160mV rms
70mV rms
4µs/DIV
Figure 28. Output Response to Various RF Input Pulse Levels, 3.0 V Supply,
900 MHz Frequency, CFLTR = Open, COUT = Open, ROUT = Open
400mV rms RF INPUT
250mV rms
160mV rms
70mV rms
PULSED RFIN
10µs/DIV
Figure 29. Output Response to Various RF Input Pulse Levels, 3.0 V Supply,
900 MHz Frequency, CFLTR = 10 nF, COUT = Open, ROUT = Open
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PULSED RFIN
400mV rms RF INPUT
250mV rms
160mV rms
70mV rms
10µs/DIV
Figure 30. Output Response to Various RF Input Pulse Levels, 3.0 V Supply,
900 MHz Frequency, CFLTR =Open, COUT = 10 nF, ROUT = 1 kΩ
400mV rms RF INPUT
ENBL
250mV rms
160mV rms
70mV rms
2µs/DIV
Figure 31. Output Response to Enable Gating at Various RF Input Levels,
3.0 V Supply, 900 MHz Frequency, CFLTR = Open, COUT = Open, ROUT = Open
400mV rms RF INPUT
ENBL
250mV rms
160mV rms
70mV rms
4µs/DIV
Figure 32. Output Response to Enable Gating at Various RF Input Levels,
3.0 V Supply, 900 MHz Frequency, CFLTR = 10 nF, COUT = Open, ROUT = Open
ENBL
400mV rms RF INPUT
250mV rms
160mV rms
70mV rms
10µs/DIV
Figure 33. Output Response to Enable Gating at Various RF Input Levels,
3.0 V Supply, 900 MHz Frequency, CFLTR =Open, COUT = 10 nF, ROUT = 1 kΩ
Rev. 0 | Page 12 of 24

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