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LTC5508ESC6 Datasheet

  • LTC5508ESC6

  • 300MHz to 7GHz RF Power Detector with Buffered Output in SC7...

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LTC5508
300MHz to 7GHz RF Power
Detector with Buffered Output
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 7GHz
Wide Input Power Range: 鈥?2dBm to 12dBm
Buffered Detector Output
Wide V
CC
Range of 2.7V to 6V
Low Operating Current: 550碌A(chǔ)
Low Shutdown Current: <2碌A(chǔ)
SC70 Package
The LTC
廬
5508 is an RF power detector for RF applications
operating in the 300MHz to 7GHz 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. A power saving shutdown mode
reduces supply current to less than 2碌A(chǔ).
The LTC5508 operates with input power levels from
鈥?2dBm to 12dBm.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
s
s
802.11a, 802.11b, 802.11g, 802.15
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
10000
V
CC
= 3.6V
T
A
= 25擄C
RF
INPUT
33pF
6
2
LTC5508
V
CC
4
RF
IN
GND
SHDN
GND
5
100pF
V
CC
0.1碌F
V
OUT
OUTPUT VOLTAGE (mV)
300MHz to 7GHz RF Power Detector
1000
2GHz
1GHz
4GHz
6GHz
7GHz
DISABLE ENABLE
1
V
OUT
3 V
OUT
5508 TA01
100
鈥?2 鈥?8 鈥?4 鈥?0 鈥?6 鈥?2 鈥? 鈥? 0 4
RF INPUT POWER (dBm)
U
8 12
5508 TA02
U
U
5508fa
1

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