LTC5564

10

5564f

APPLICATIONS INFORMATION

Figure 4. 600MHz to 15GHz Power Detector

+

RFIN

GND

G1

DETECT

OVERVOLTAGE

EVENT

G0

LEN

5564 F04

LTC5564

10

DETECT

VOLTAGE

8

7

14

5

13

1

11

15

12

3, 4, 17

FROM RF MATCHING

NETWORK/ANTENNA

47pF

10pF

1000pF

μC

Figure 5. Demo Board Schematic Optimized for 15GHz

NC

17

2.2pF

15GHz

RFIN

1000pF

10pF

100pF

10pF

100pF

G1

G0

5564 F05

68Ω

1000pF

0.5pF

1

2

3

4

16

15

14

13

12

11

10

9

8

7

6

5

10k

10k

100pF

10k

RFIN

NC

GND

GND

NC

LTC5564

LEN

LEN

G1

Applications

The LTC5564 can be used as a self-standing signal strength

measurement receiver for a wide range of input signals

from –24dBm to 16dBm and frequencies from 600MHz

to 15GHz.

In addition to power detection, the LTC5564 may be used

as a demodulator for AM and ASK modulated signals.

Depending on the application the RSSI may be split into

two branches to provide AC-coupled data (e.g., audio) and

a DC-coupled RSSI output for signal strength measure-

ment and AGC.