LTC5582



5582f

RF INPUT POWER (dBm)

–65

3

2

0

–2

1

–1

–3

–25

–45

–5

5582 TAO1b

5

–35

–55

–15

4-CARRIER WCDMA

CW

3-CARRIER CDMA2K

Typical applicaTion

FeaTures

DescripTion

40MHz to 10GHz

RMS Power Detector with

57dB Dynamic Range

detector. It is capable of accurate power measurement

of an AC signal with wide dynamic range, from –60dBm

to 2dBm depending on frequency. The power of the AC

signal in an equivalent decibel-scaled value is precisely

converted into DC voltage on a linear scale, independent of

thecrestfactoroftheinputsignalwaveforms.TheLTC5582

is suitable for precision RF power measurement and level

control for a wide variety of RF standards, including LTE,

WiMAX, W-CDMA, CDMA2000, TD-SCDMA, and EDGE.

The DC output is buffered with a low output impedance

amplifier capable of driving a high capacitance load. Con-

sult factory for more information. The part is packaged in

a 10-lead 3mm

× 3mm DFN. It is pin-to-pin compatible

with the LT5570.

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Protected by U.S. Patents including 7262661, 7317357, 7622981.

40MHz to 6GHz RMS Power Detector

applicaTions

n

Frequency Range: 40MHz to 10GHz

n

Linear Dynamic Range: Up to 57dB

n

Accurate RMS Power Measurement of High Crest

Factor Modulated Waveforms

n

Exceptional Accuracy Over Temperature: ±0.5dB (Typ)

n

Low Linearity Error within Dynamic Range

n

Single-Ended or Differential RF Inputs

n

Fast Response Time: 90ns Rise Time

n

Low Supply Current: 41.6mA at 3.3V (Typ)

n

Small 3mm

× 3mm DFN10

n

RMS Power Measurement

n

PA Power Control

n

Receive and Transmit Gain Control

n

LTE, WiMAX, W-CDMA, CDMA2K, TD-SCDMA,

EDGE Basestations

n

Point-to-Point Microwave Links

n

RF Instrumentation

GND

FLTR

EN

ENABLE

OUT

RT2

DEC

RT1

100nF

1nF

1nF

3.3V

5582 TA01a

LTC5582

1µF

270pF

68

Linearity Error vs RF Input Power

2140MHz Modulated Waveforms