8

8 - 40

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v02.0607

70 dB RMS POWER

DETECTOR, DC - 3.9 GHz

Pin Number

Function

Description

Interface Schematic

9, 10

COFS

Input high pass filter capacitor. Connect to common

via a capacitor to determine 3 dB point of input

signal high-pass filter.

14

VSET

VSET input. Short this pin to RMSOUT for normal

operation. Use a resistor between RMSOUT and

VSET to increase the logarithmic slope.

15

RMSOUT

Logarithmic output that converts the input power

to a DC level. Short this pin to VSET for normal

operation.

16

IPWR

Ground for proper operation

17

CINT

Connection for ground referenced loop filter

integration capacitor.

19

VTGT

This voltage input changes the logarithmic intercept

point. Use of lower target voltage reduces error for

complex signals with large crest factors. Normally

connected to VREF.

20

VREF

Reference voltage output.