LTC5535

1

5535f

TYPICAL APPLICATIO

APPLICATIO S

DESCRIPTIO

FEATURES

■

Temperature Compensated Internal Schottky

Diode RF Detector

■

Wide Input Power Range: –32dBm to 10dBm

■

Low Starting Voltage: 200mV for Gain = 2

■

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

Precision 600MHz to 7GHz,

RF Detector with

Adjustable Gain and

12MHz Baseband Bandwidth

The LTC

operating in the 600MHz to 7GHz range. A temperature

compensated Schottky diode peak detector and output

amplifier are combined in a small ThinSOT

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

The LTC5535 output amplifier gain is set via external

resistors. The initial starting voltage of 200mV can be

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.

600MHz to 7GHz RF Power Detector

LTC5535

1

2

3

6

5

4

100pF

0.1µF

REFERENCE

GND

33pF

5535 TA01

RF

INPUT

Output Voltage vs RF Input Power

ThinSOT is a trademark of Linear Technology Corporation.

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

information.

RF INPUT POWER (dBm)

–32

800

3200

3600

–20 –16

–8

0

–4

5535 TA02

2400

1600

400

2800

0

2000

1200

–28 –24

–12

48

12

GAIN = 2

2GHz

7GHz

600MHz

1GHz

5GHz

6GHz

4GHz