LTC5530

1

5530f

APPLICATIO S

FEATURES

TYPICAL APPLICATIO

DESCRIPTIO

s

802.11a, 802.11b, 802.11g, 802.15, 802.16

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 10dBm

s

Buffered Detector Output with External Gain Control

s

Low Starting Voltage: 120mV

±35mV for Gain = 2X

s

s

Low Operating Current: 500

µA

s

Low Shutdown Current: <2

µA

s

Available in a Low Profile (1mm) SOT-23 Package

Precision 300MHz to 7GHz

RF Detector with Shutdown

and Gain Adjustment

The LTC

operating in the 300MHz to 7GHz range. A temperature

compensated Schottky diode peak detector and buffer

amplifier are combined in a small ThinSOT

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

external resistors. A power saving shutdown mode re-

duces current to less than 2

µA.

The LTC5530 operates with input power levels from

–32dBm to 10dBm.

, LTC and LT are registered trademarks of Linear Technology Corporation.

300MHz to 7GHz RF Power Detector

LTC5530

1

2

3

6

5

4

100pF

0.1

µF

GND

SHDN

33pF

5530 TA01

RF

INPUT

DISABLE ENABLE

Output Voltage vs RF Input Power

ThinSOT is a trademark of Linear Technology Corporation.

information.

3600

3200

2800

2400

2000

1600

1200

800

400

0

RF INPUT POWER (dBm)

5530 TA02

–32 –28 –24 –20 –16 –12 –8 –4

0

4

8

GAIN = 2

300MHz

1000MHz

2000MHz

3000MHz

5000MHz

6000MHz

7000MHz

4000MHz