LINEARITY ERROR (dB)
LT5534
50MHz to 3GHz
RF Power Detector
with 60dB Dynamic Range
FEATURES DESCRIPTION
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RF Frequency Range: 50MHz to 3GHz
The LT 5534 is a 50MHz to 3GHz monolithic RF power
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Linear Dynamic Range: 60dB
detector capable of measuring RF signals over a 60dB
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Exceptional Accuracy over Temperature
dynamic range. The RF signal in a decibel scale is pre-
and Power Supply
cisely converted into DC voltage on a linear scale. The
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Fast Transient Response:
60dB input dynamic range is achieved using cascaded RF
38ns Full-Scale Settling Time
detectors and RF limiters. Their outputs are summed to
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Single 2.7V to 5.25V Supply
generate an accurate log-linear DC voltage proportional
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Low Supply Current: 7mA
to the input RF signal in dB. The output is buffered with a
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Shutdown Current: 0.1A
low output impedance driver. The LT5534 delivers superior
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Tiny 6-Lead SC70 Package
temperature stability (typical output variation within 1dB
over the full temperature range). The output responds in
less than 40ns to a large RF input signal.
APPLICATIONS
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
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RF RSSI and ACC
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RF Power Control
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CATV Power Detection
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Optical Receiver Gain Control
TYPICAL APPLICATION
Output Voltage
50MHz to 3GHz RF Power Detector
vs RF Input Power
3V
2.4 3
0.1F 100pF
V = 3V
CC
AT 900MHz
2.0 2
V
LT5534
CC
1.6 1
DET DET DET DET DET V
OUT
V
OUT
1nF
1.2 0
RF
RF
INPUT
47
0.8 1
ENABLE EN
GND
T = 25C
0.4 2
A
5534 TA01
T = 85C
A
TA = 40C
0 3
60 50 40 30 20 10 0
RF INPUT POWER (dBm)
5534 TA01b
5534fc
1
V (V)
OUTLT5534
ABSOLUTE MAXIMUM RATINGS
PIN CONFIGURATION
(Note 1)
TOP VIEW
Power Supply Voltage ..............................................5.5V
EN 1 6 RF
Enable Voltage .....................................................0V, V
CC
GND 2 5 GND
RF Voltage (+10dBm Equivalent) ..............................1V
V 3 4 V
OUT CC
Operating Ambient Temperature Range ...40C to 85C
Storage Temperature Range ...................65C to 125C SC6 PACKAGE
6-LEAD PLASTIC SC70
Lead Temperature (Soldering, 10 sec) .................. 300C
T = 125C, = 256C/W
JMAX JA
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT5534ESC6#PBF LT5534ESC6#TRPBF LBGD 6-Lead Plastic SC70 40C to 85C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: