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LTC5532 Datasheet(Fiches technique) 1 Page - Linear Technology

Numéro de pièce LTC5532
Description  300MHz to 7GHz Precision RF Power Detector with Gain and Offset Adjustment
Télécharger  12 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
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LTC5532
1
5532i
APPLICATIO S
TYPICAL APPLICATIO
s
802.11a, 802.11b, 802.11g, 802.15
s
Multimode Mobile Phone Products
s
Optical Data Links
s
Wireless Data Modems
s
Wireless and Cable Infrastructure
s
RF Power Alarm
s
Envelope Detector
s
Temperature Compensated Internal Schottky
Diode RF Detector
s
Wide Input Frequency Range: 300MHz to 7GHz
s
Wide Input Power Range: –32dBm to 8dBm
s
Buffered Detector Output with External Gain Control
s
Precision VOUT Offset Control
s
Low Offset Voltage: 120mV
±35mV for Gain = 2x
s
Wide VCC Range of 2.7V to 6V
s
Low Operating Current: 500
µA
s
Available in a Low Profile (1mm) SOT-23 Package
300MHz to 7GHz
Precision RF Power Detector
with Gain and Offset Adjustment
August 2003
The LTC
®5532 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 ThinSOT
TM 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 VOUT pin.
The LTC5532 output buffer gain is set via external resis-
tors. The initial offset voltage of 120mV
±35mV can be
precisely adjusted using the VOS pin.
The LTC5532 operates with input power levels from
–32dBm to 8dBm.
, LTC and LT are registered trademarks of Linear Technology Corporation.
300MHz to 7GHz RF Power Detector
LTC5532
1
2
3
6
5
4
100pF
0.1
µF
VCC
VOS
REFERENCE
VCC
VOUT
RFIN
GND
VOS
33pF
5532 TA01
RF
INPUT
VM
RA
RB
Output Voltage vs RF Input Power
3600
3200
2800
2400
2000
1600
1200
800
400
0
RF INPUT POWER (dBm)
5532 TA02
–32 –27 –22 –17 –12 –7
–2
3
8
VCC = 3.6V
TA = 25°C
GAIN = 2
VOS = 0V
7000MHz
6000MHz
5000MHz
1000MHz
3000MHz
4000MHz
2000MHz
300MHz
ThinSOT is a trademark of Linear Technology Corporation.
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
Final Electrical Specifications
FEATURES
DESCRIPTIO




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