LTC5564

1

5564f

SIMPLIFIED BLOCK DIAGRAM

FEATURES

DESCRIPTION

UltraFast™ 7ns Response

Time 15GHz RF Power

Detector with Comparator

plications in the 600MHz to 15GHz frequency range. The

LTC5564 operates with input power levels from –24dBm

to 16dBm.

A temperature compensated Schottky diode peak detector,

gain-selectable operational amplifier, and fast comparator

are combined in a small 16-lead 3mm × 3mm QFN package.

The RF input signal is peak detected and then sensed by

both a comparator and amplifier. The comparator provides

with a latch enable/disable function. The gain selectable

operational amplifier provides a 350V/μs slew rate and

75MHz of demodulation bandwidth to the analog output.

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

UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the property

of their respective owners.

more information.

APPLICATIONS

Typical Response Time

802.11g, 802.15, Optical Data Links, Wireless Data

Modems, Wireless and Cable Infrastructure

RFIN

LEN

+

–

G1

PINS 3, 4,

EXPOSED PAD PIN 17

G0

5564 BD

PROGRAMMABLE

FEEDBACK ARRAY

RFIN POWER (dBm)

–24

0

800

600

1400

1800

3400

3200

2600

–16 –12

–4

0

3000

2200

400

200

1200

1000

1600

2400

2800

2000

–20

–8

4

8

12 16

5564 TA01b

GAIN8

GAIN4

GAIN2

GAIN1