ADL5505ACBZ-P2 AD [Analog Devices], ADL5505ACBZ-P2 Datasheet

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ADL5505ACBZ-P2

Manufacturer Part Number
ADL5505ACBZ-P2
Description
450 MHz to 6000Mhz TruPwr Detector
Manufacturer
AD [Analog Devices]
Datasheet
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-
RF transmitter or receiver power measurement
GENERAL DESCRIPTION
The ADL5505 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 1.86 V/V rms at 900 MHz.
The ADL5505 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.
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.
Trademarks and registered trademarks are the property of their respective owners.
based OFDM (LTE and WiMAX), and other complex
modulation waveforms
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The on-chip modulation filter provides adequate averaging for
most waveforms. 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 ADL5505 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 ADL5505 offers low process variations
that further reduce calibration complexity.
The power detector operates from −40°C to +85°C and is
available in an 4-ball, 0.8 mm × 0.8 mm wafer-level chip scale
package. It is fabricated on a high f
Figure 2. Output vs. Input Level, Supply = 3.0 V, Frequency = 1900 MHz
0.01
0.1
10
1
RFIN
–25
FUNCTIONAL BLOCK DIAGRAM
–20
ADL5505
450 MHz to 6000 MHz
–15
RMS CORE
©2010 Analog Devices, Inc. All rights reserved.
COMM
VPOS
–10
Figure 1.
INPUT (dBm)
TruPwr Detector
FILTERING
–5
INTERNAL
T
BUFFER
silicon BiCMOS process.
0
100Ω
ADL5505
5
www.analog.com
VRMS
10
15

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ADL5505ACBZ-P2 Summary of contents

Page 1

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: ...

Page 2

ADL5505 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 6 ESD Caution .................................................................................. 6 Pin Configuration and Function Descriptions ...

Page 3

SPECIFICATIONS T = 25° 3 open, light condition ≤ 600 lux, 75 Ω input termination resistor, unless otherwise noted OUT Table 1. Parameter FREQUENCY RANGE RF INPUT (f = 450 MHz) Input Impedance ...

Page 4

ADL5505 Parameter RF INPUT (f = 1900 MHz) Input Impedance RMS Conversion 1 Dynamic Range ±0.25 dB Error 2 3 ±0.25 dB Error 3 ±1 dB Error 3 ±2 dB Error Maximum Input Level Minimum Input Level Conversion Gain 4 ...

Page 5

Parameter RF INPUT (f = 6000 MHz) Input Impedance RMS Conversion 1 Dynamic Range ±1 dB Error 3 3 ±2 dB Error Maximum Input Level Minimum Input Level Conversion Gain 4 Output Intercept Output Voltage, High Input Power Output Voltage, ...

Page 6

ADL5505 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage VRMS RFIN Equivalent Power, Referred to 50 Ω Internal Power Dissipation θ (WLCSP) JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Stresses above those listed under Absolute ...

Page 7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1 VPOS Supply Voltage. The operational range RFIN Signal Input. This pin is internally ac-coupled after internal termination resistance. ...

Page 8

ADL5505 TYPICAL PERFORMANCE CHARACTERISTICS T = 25° 3 open; light condition ≤ 600 lux; 75 Ω input termination resistor; colors: black = +25°C, blue = −40° OUT red = +85°C; unless otherwise noted. ...

Page 9

INPUT (dBm) Figure 10. Output Temperature Drift from +25°C Linear Reference for 50 Devices at −40°C, +25°C, and +85°C; Frequency = 450 MHz ...

Page 10

ADL5505 –1 –2 –3 –25 –20 –15 –10 –5 INPUT (dBm) Figure 16. Output Temperature Drift from +25°C Linear Reference for 50 Devices at −40°C, +25°C, and +85°C; Frequency = 2600 MHz ...

Page 11

CW 12.2kbps, DPCCH (–5.46dB, 15kSPS) + DPDCH (0dB, 60kSPS), 3.4dB CF 144kbps, DPCCH (–11.48dB, 15kSPS) + DPDCH (0dB, 480kSPS), 3.3dB CF 768kbps, DPCCH (–11.48dB, 15kSPS) + DPDCH1 + 2 (0dB, 960kSPS), 5.8dB CF 2 DPCCH (–6.02dB, 15kSPS) + DPDCH ...

Page 12

ADL5505 400mV rms RF INPUT 250mV rms 160mV rms 70mV rms 4μs/DIV Figure 28. Output Response to Various RF Input Pulse Levels; Supply = 3.0 V; Frequency = 900 MHz; C OUT 400mV rms RF INPUT 250mV rms 160mV rms ...

Page 13

CIRCUIT DESCRIPTION The ADL5505 employs two-stage detection. The critical aspect of this technical approach is the concept of first stripping the carrier to reveal the envelope and then performing the required analog computation of rms. RMS CIRCUIT DESCRIPTION AND FILTERING ...

Page 14

ADL5505 APPLICATIONS INFORMATION BASIC CONNECTIONS Figure 32 shows the basic connections for the ADL5505. The device is powered by a single supply between 2.5 V and 3.3 V, with a quiescent current of 1.8 mA. The VPOS pin is decoupled ...

Page 15

Multiple RF Inputs Figure 35 shows a technique for combining multiple RF input signals to the ADL5505. Some applications can share a single detector for multiple bands. Three 16.5 Ω resistors network combine the three 50 Ω ...

Page 16

ADL5505 OUTPUT DRIVE CAPABILITY AND BUFFERING The ADL5505 is capable of sourcing a VRMS output current of approximately 3 mA. The output current is sourced through the on-chip, 100 Ω series resistor; therefore, any load resistor forms a voltage divider ...

Page 17

RF INPUT 250mV rms 160mV rms 70mV rms 1ms/DIV Figure 40. Output Response to Various RF Input Pulse Levels, Supply = 3 V, Frequency = 900 MHz; Square-Domain Filter Open 0.1 μF with Parallel 1 kΩ ...

Page 18

ADL5505 CALIBRATION FOR IMPROVED ACCURACY Another way of presenting the error function of the ADL5505 is shown in Figure 42. In this case, the decibel (dB) error at hot and cold temperatures is calculated with respect to the transfer function ...

Page 19

VPOSB RFINB R7B 75Ω Table 4. Evaluation Board Configuration Options Component Description VPOSB, GNDB Ground and supply vector pins. C1B, C2B, C7B, C8B, Power supply decoupling. Nominal supply decoupling of 0.1 μF and 100 pF. C9B R7B RF input interface. ...

Page 20

... SIDE DOWN) ORDERING GUIDE 1 Model Temperature Range ADL5505ACBZ-P7 –40°C to +85°C ADL5505ACBZ-P2 –40°C to +85°C ADL5505-EVALZ RoHS Compliant Part. ©2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 0.660 ...

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