LTC5533 datasheet(1/12 Pages) LINER

No de pièce	LTC5533

Description	300MHz to 11GHz Precision Dual RF Power Detector

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Fabricant	LINER [Linear Technology]

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LTC5533

1

5533f

APPLICATIO S

FEATURES

TYPICAL APPLICATIO

DESCRIPTIO

■ PA Forward and Reverse Power Monitor

■ Dual PA Transmit Power Control

■ 802.11a, b, g, 802.15, WiMAX

■ PA Linearization

■ Fixed Wireless Access

■ RF Power Alarm

■ Envelope Detector

■

Two Independent Temperature Compensated

Schottky Diode RF Peak Detectors

■ 45dB Channel-to-Channel Isolation at 2GHz

■

Wide Input Frequency Range: 300MHz to 11GHz*

■ Wide Input Power Range: –32dBm to 12dBm

■ Buffered Detector Outputs with Gain of 2x

■

Adjustable VOUT Starting Voltage

■ Wide VCC Range of 2.7V to 6V

■ Low Operating Current: <500µA/Channel

■

Low Shutdown Current: <2µA/Channel

■ 4mm × 3mm DFN Package

300MHz to 11GHz Precision

Dual RF Power Detector

The LTC

®5533 is a dual channel RF power detector for RF

applications operating in the 300MHz to 11GHz range.

Two independent temperature compensated Schottky di-

ode peak detectors and buffer amplifiers are combined in

a small 4mm × 3mm DFN package.

The RF input voltage is peak detected using on-chip

Schottky diodes. The detected voltage is buffered and

supplied to the VOUT pins. A power saving shutdown mode

reduces current to less than 2µA/channel. The initial

output starting voltages can be precisely adjusted using

the VOS pins.

The LTC5533 operates with input power levels from

–32dBm to 12dBm.

300MHz to 11GHz RF Power Detectors

RF1 INPUT

100pF

0.1µF

39pF

VCC

RF2 INPUT

(EXPOSED PAD)

VOS2

VOS1

DISABLE ENABLE

LTC5533

VCC1

VOUT1

VOS1

VCC2

VOUT2

VOS2

5533 TA01

SHDN2

SHDN1

GND2

RFIN2

GND1

RFIN1

Output Voltage vs RF Input Power

RF INPUT POWER (dBm)

–28

0

400

1200

1600

2000

–4

048

3600

5533 TA02

800

–24 –20 –16 –12 –8

12

2400

2800

3200

VCC = 3.6V

VOS = 0V

TA = 25°C

500MHz

4GHz

1GHz

5GHz

10GHz

11GHz

9GHz

8GHz

6GHz

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

All other trademarks are the property of their respective owners.

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

information.

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