HMC714LP5 Datasheet, PDF (21/40 Pages) Hittite Microwave Corporation – DUAL RMS POWER DETECTOR 0.1 - 3.9 GHz

v05.0309
HMC714LP5 / 714LP5E
DUAL RMS POWER DETECTOR
0.1 - 3.9 GHz
12
Pin Descriptions (Continued)
Pin Number
19
20
21
Function
FBKB
OUTN
OUTP
Description
Feedback through 3.5K Ohms to the negative
terminal of the integrated Op Amp driving OUTN
Output providing the difference of RMS outputs
using an Op Amp. For normal operation,
connected to FBKB to provide the function:
OUTN = RMSB - RMSA + VLVL
Output providing the difference of RMS outputs
using an Op Amp. For normal operation,
connected to FBKA to provide the function:
OUTP = RMSA - RMSB + VLVL
Interface Schematic
Feedback through 3.5K Ohms to the negative
22
FBKA
terminal of the integrated Op Amp driving OUTP
This voltage input changes the logarithmic
intercept point. Use of lower target voltage
28
VTGT
reduces error for complex signals with large crest
factors. Normally connected to VREF3 via resistor
voltage divider. See Application Note section.
3V Reference voltage output for use with VTGT.
29
VREF3
See Application Note section.
Temperature sensor output. See Application Note
30
TEMP
section.
12 - 134
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