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LTC5535 View Datasheet(PDF) - Linear Technology

Part Name
Description
MFG CO.
'LTC5535' PDF : 12 Pages View PDF
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LTC5535
Precision 600MHz to 7GHz,
RF Detector with
Adjustable Gain and
12MHz Baseband Bandwidth
FEATURES
Temperature Compensated Internal Schottky
Diode RF Detector
Wide Input Frequency Range: 600MHz to 7GHz*
Wide Input Power Range: –32dBm to 10dBm
External Gain Control
Precision VOUT Offset Control
Low Starting Voltage: 200mV for Gain = 2
Wide VCC Range of 2.7V to 5.5V
Low Operating Current: 2mA
Available in a Low Profile (1mm) SOT-23 Package
U
APPLICATIO S
802.11a, 802.11b, 802.11g, 802.15, 802.16
Multimode Mobile Phone Products
Optical Data Links
Wireless Data Modems
Wireless and Cable Infrastructure
RF Power Alarm
Envelope Detector
DESCRIPTIO
The LTC®5535 is an RF power detector for RF applications
operating in the 600MHz to 7GHz range. A temperature
compensated Schottky diode peak detector and output
amplifier are combined in a small ThinSOTTM package. The
supply voltage range is optimized for operation from a
single cell lithium-ion or three cell NiMH battery.
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 LTC5535 output amplifier gain is set via external
resistors. The initial starting voltage of 200mV can be
precisely adjusted using the VOS pin.
The LTC5535 operates with input power levels from
–32dBm to 10dBm. The 12MHz baseband bandwidth is
much higher than that of previous Schottky detector
products.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
*Higher frequency operation is achievable with reduced performance. Consult factory for more
information.
TYPICAL APPLICATIO
600MHz to 7GHz RF Power Detector
33pF
LTC5535
RF
INPUT
1
RFIN
VCC 6
2
GND
5
VOUT
VOS
REFERENCE
3
VOS
4
VM
5535 TA01
100pF
RA
RB
VCC
0.1µF
Output Voltage vs RF Input Power
3600
3200
2800
VCC = 3.6V
TA = 25°C
GAIN = 2
VOS = 0V
2400
2000
1600
1200
800
2GHz
600MHz
1GHz
5GHz
6GHz
7GHz
4GHz
400
0
–32 –28 –24 –20 –16 –12 –8 –4 0 4 8 12
RF INPUT POWER (dBm)
5535 TA02
5535f
1
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