LTC5532

1

5532f

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 10dBm

s

Buffered Detector Output with External Gain Control

s

s

Low Starting Voltage: 120mV

±35mV for Gain = 2x

s

s

Low Operating Current: 500

µA

s

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

and Tiny 6-Lead (2mm

× 2mm) DFN Package

Precision 300MHz to 7GHz

RF Detector with Gain

and Offset 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

×

2mm) DFN package. The supply voltage range is opti-

mized for operation from a single lithium-ion cell or 3

×

NiMH.

The RF input voltage is peak detected using an on-chip

Schottky diode. The detected voltage is buffered and

The LTC5532 output buffer gain is set via external resis-

tors. The initial starting voltage of 120mV

±35mV can be

The LTC5532 operates with RF input power levels from

–32dBm to 10dBm.

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

300MHz to 7GHz RF Power Detector

(SOT-23 Package)

Output Voltage vs RF Input Power

(SOT-23 Package)

ThinSOT is a trademark of Linear Technology Corporation.

*Higher frequency operation is achievable with reduced performance. Consult factory for more

information.

DESCRIPTIO

FEATURES

APPLICATIO S

TYPICAL APPLICATIO

LTC5532ES6

1

2

3

6

5

4

100pF

0.1

µF

REFERENCE

GND

33pF

5532 TA01

RF

INPUT

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

GAIN = 2

7000MHz

6000MHz

5000MHz

1000MHz

3000MHz

4000MHz

2000MHz

300MHz