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PDF ADL5903 Data sheet ( Hoja de datos )
| Número de pieza | ADL5903 | |
| Descripción | Detector | |
| Fabricantes | Analog Devices | |
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Data Sheet
FEATURES
Accurate rms-to-dc conversion from 200 MHz to 6 GHz
Measurement dynamic range of 35 dB
Ripple-free transfer function
Single-ended input, 50 Ω source compatible
No external matching required
Waveform and modulation independent, such as
GSM/CDMA/W-CDMA/TD-SCDMA/LTE
Linear in decibels output, scaled 35.5 mV/dB at 900 MHz
Excellent temperature stability
Operates from 3.0 V to 5.0 V from −55°C to +125°C
Low power consumption: 3 mA at 3.0 V to 5.0 V supply
8-lead, 2 mm × 2 mm LFCSP package
APPLICATIONS
Power amplifier linearization/control loops
Transmitter power controls
Transmitter signal strength indication (TSSI)
RF instrumentation
Wireless repeaters
GENERAL DESCRIPTION
The ADL5903 is a true rms responding power detector that has
a 35 dB measurement range. It features low power consumption
and an intrinsically ripple-free error transfer function.
The ADL5903 provides a solution in a variety of high frequency
systems requiring an accurate measurement of signal power.
Requiring only a single supply of 3.0 V to 5.0 V and a few
capacitors, it is easy to use and capable of being driven single-
ended or with a balun for differential input drive. An on-chip
matching network provides good return loss over the specified
frequency range of the device. The ADL5903 can operate from
200 MHz to 6 GHz and can accept inputs from −30 dBm to
+20 dBm.
200 MHz to 6 GHz
35 dB TruPwr™ Detector
ADL5903
FUNCTIONAL BLOCK DIAGRAM
VPOS
5
ADL5903
ENBL 6
1kΩ
CREG
4
INTERNAL
FILTERING
630pF
3 CRMS
4pF
RFIN 1
RMS CORE
100Ω
7 VRMS
BUFFER
2
GND
8
NIC
Figure 1.
EP
The ADL5903 can be used to determine the true power of a
high frequency signal with a complex modulation envelope
including large crest factor signals such as GSM, CDMA,
W-CDMA, TD-SCDMA, and LTE modulated signals. The
output is then proportional to the logarithm of the rms value
of the input. In other words, the reading is presented directly
in decibels and is scaled about 35.5 mV/dB at 900 MHz.
The ADL5903 has low power consumption when operational
and a disable mode that further reduces the power consumption.
Power consumption is less than 100 µA when the ADL5903
enters power-down mode through a logic low at Pin ENBL.
The ADL5903 is supplied in a 2 mm × 2 mm, 8-lead LFCSP for
operation over the wide temperature range of −55°C to +125°C.
Rev. B
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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 ©2013–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
ADL5903
Parameter
f = 5800 MHz
±1.0 dB Dynamic Range
Maximum Input Level, ±1.0 dB
Minimum Input Level, ±1.0 dB
Deviation vs. Temperature
Logarithmic Slope
Logarithmic Intercept
POWER-DOWN INTERFACE
Voltage Level to Enable
Voltage Level to Disable
Input Bias Current
POWER SUPPLY INTERFACE
Supply Voltage
Quiescent Current
Power-Down Current
Test Conditions/Comments
CW input, TA = 25°C, VPOS = 5.0 V
CW input, TA = 25°C, VPOS = 3.0 V
Three-point calibration at −12 dBm, −2 dBm, and +12 dBm
Three-point calibration at −12 dBm, −2 dBm, and +12 dBm
Deviation from output at 25°C
−40°C < TA < +85°C; PIN = 10 dBm
−55°C < TA < +125°C; PIN = 10 dBm
−40°C < TA < +85°C; PIN = −10 dBm
−55°C < TA < +125°C; PIN = −10 dBm
Calibration at −12 dBm and +8 dBm
Calibration at −12 dBm and +8 dBm (X-intercept)
Pin ENBL
VENBL = 2.2 V
Pin VPOS
TA = 25°C, no signal at RFIN, VPOS = 5.0 V
TA = 125°C, no signal at RFIN, VPOS = 5.0 V
ENBL input low condition
1 Refer to Figure 12, input return loss, S11 (dB).
2 The slash indicates a range. For example, −0.2/+0.03 means −0.2 to +0.03.
Min Typ
35
32
19
−16
−0.6/+0.32
−0.7/+0.42
−1.1/+0.72
−1.4/+1.12
40
−27
2
0
<20
3.0
3
3.6
<100
Max Unit
dB
dB
dBm
dBm
dB
dB
dB
dB
mV/dB
dBm
VPOS
0.6
V
V
nA
5.25 V
mA
mA
µA
Rev. B | Page 5 of 20
5 Page 
Data Sheet
2.4 6
2.2 CALIBRATION AT –15dBm, –3dBm, AND +13dBm 5
2.0
–55°C
4
1.8
–40°C
+25°C
3
1.6
+85°C
+125°C
2
1.4 1
1.2 0
1.0 –1
0.8 –2
0.6 –3
0.4 –4
0.2 –5
0 –6
–40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20
PIN (dBm)
Figure 21. VRMS and Log Conformance Error vs. Input Level and Temperature
at 1.9 GHz
2.4 6
CALIBRATION AT –15dBm, –3dBm, AND +13dBm
2.2 5
2.0 4
–55°C
1.8
–40°C
3
+25°C
1.6
+85°C
2
+125°C
1.4 1
1.2 0
1.0 –1
0.8 –2
0.6 –3
0.4 –4
0.2 –5
0 –6
–40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20
PIN (dBm)
Figure 22. VRMS and Log Conformance Error vs. Input Level and Temperature
at 2.14 GHz
2.4 6
CALIBRATION AT –14dBm, –2dBm, AND +14dBm
2.2 5
2.0
–55°C
4
1.8
–40°C
+25°C
3
1.6
+85°C
+125°C
2
1.4 1
1.2 0
1.0 –1
0.8 –2
0.6 –3
0.4 –4
0.2 –5
0 –6
–40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20
PIN (dBm)
Figure 23. VRMS and Log Conformance Error vs. Input Level and Temperature
at 2.6 GHz
ADL5903
2.4 6
2.2
–55°C
5
2.0 –40°C
+25°C
4
1.8 +85°C
3
+125°C
1.6 2
1.4 1
1.2 0
1.0 –1
0.8 –2
0.6 –3
0.4 –4
0.2 –5
0 –6
–40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20
PIN (dBm)
Figure 24. Distribution of Log Conformance Error with Respect to Calibration
at 25°C vs. Input Level and Temperature at 1.9 GHz
2.4 6
2.2
–55°C
5
2.0 –40°C
+25°C
4
1.8 +85°C
3
+125°C
1.6 2
1.4 1
1.2 0
1.0 –1
0.8 –2
0.6 –3
0.4 –4
0.2 –5
0 –6
–40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20
PIN (dBm)
Figure 25. Distribution of Log Conformance Error with Respect to Calibration
at 25°C vs. Input Level and Temperature at 2.14 GHz
2.4 6
2.2
–55°C
5
2.0 –40°C
+25°C
4
1.8 +85°C
3
+125°C
1.6 2
1.4 1
1.2 0
1.0 –1
0.8 –2
0.6 –3
0.4 –4
0.2 –5
0 –6
–40 –35 –30 –25 –20 –15 –10 –5 0 5 10 15 20
PIN (dBm)
Figure 26. Distribution of Log Conformance Error with Respect to Calibration
at 25°C vs. Input Level and Temperature at 2.6 GHz
Rev. B | Page 11 of 20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet ADL5903.PDF ] | |
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