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LTC5509ESC6 Datasheet

  • LTC5509ESC6

  • 300MHz to 3GHz 300MHz RF Power Detector in SC70 Package

  • 8頁(yè)

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LTC5509
300MHz to 3GHz
RF Power Detector
in SC70 Package
FEATURES
s
s
s
s
s
s
s
s
DESCRIPTIO
Temperature Compensated Internal Schottky Diode
RF Detector
Wide Input Frequency Range: 300MHz to 3GHz
Wide Input Power Range: 鈥?0dBm to 6dBm
Buffered Detector Output
Wide V
CC
Range of 2.7V to 6V
Low Operating Current: 600碌A(chǔ)
Low Shutdown Current: <2碌A(chǔ)
SC70 Package
The LTC
廬
5509 is an RF power detector for RF applications
operating in the 300MHz to 3GHz range. A temperature
compensated Schottky diode peak detector and buffer
amplifier are combined in a small SC70 package. The
supply voltage range is optimized for operation from a
single lithium-ion cell or 3xNiMH.
The RF input voltage is peak detected using an on-chip
Schottky diode. The detected voltage is buffered and
supplied to the V
OUT
pin without gain compression. Con-
sequently, the output voltage is linearly proportional to the
RF input voltage. A power saving shutdown mode reduces
supply current to less than 2碌A(chǔ).
The LTC5509 operates with input power levels from
鈥?0dBm to 6dBm.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
s
Multimode Mobile Phone Products
Optical Data Links
Wireless Data Modems
Wireless and Cable Infrastructure
RF Power Alarm
Envelope Detector
TYPICAL APPLICATIO
Output Voltage vs RF Input Power
3000
V
CC
= 3.6V
T
A
= 25擄C
850MHz
1.85GHz
2000
3GHz
1500
1000
500
0
0
鈥?0 鈥?5 鈥?0 鈥?5 鈥?0 鈥?
RF INPUT POWER (dBm)
RF
INPUT
33pF
6
2
LTC5509
V
CC
4
RF
IN
GND
SHDN
GND
5
100pF
V
CC
0.1碌F
DISABLE ENABLE
1
V
OUT
3 V
OUT
5509 TA01
V
OUT
OUTPUT VOLTAGE (mV)
300MHz to 3GHz RF Power Detector
2500
U
5
10
5509 TA02
U
U
5509f
1

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