ADRF6750ACPZ-R7 datasheet(12/40 Pages) AD

12 / 40 page

ADRF6750

Rev. A | Page 12 of

OUTPUT IP3 INTERCEPT POINT (dBm)

Figure 17. Output IP3 vs. LO Frequency at Nominal Conditions

–140

–130

–120

–110

–100

–90

–80

–70

–60

LO FREQUENCY (MHz)

ATTENUATION = 0dB

ATTENUATION = 47dB

ATTENUATION

= 21dB

Figure 18. LO Off Isolation vs. Attenuation, LO Frequency, Supply,

and Temperature

–120

–110

–100

–90

–80

–70

–60

–50

–40

–30

–20

LO FREQUENCY (MHz)

ATTENUATION = 0dB

ATTENUATION = 21dB

ATTENUATION = 47dB

Figure 19. 2 × LO Off Isolation vs. Attenuation, LO Frequency, Supply,

and Temperature

–120

–110

–100

–90

–80

–70

–60

–50

–40

LO FREQUENCY (MHz)

UPPER THIRD HARMONIC (

fLO +3 × fBB)

UPPER SECOND HARMONIC (

fLO + 2 × fBB)

LOWER THIRD HARMONIC (

fLO –3 × fBB)

LOWER SECOND HARMONIC (

fLO –2 × fBB)

Figure 20. Second-Order and Third-Order Harmonic Distortion vs.

LO Frequency, Supply, and Temperature

100

–180 –176 –172 –168 –164 –160 –156 –152 –148 –144 –140

(dBm/Hz) NOISE FLOOR AT 15MHz OFFSET FREQUENCY (dBc/Hz)

ATTENUATION =

21dB (dBc/Hz)

ATTENUATION =

0dB (dBc/Hz)

ATTENUATION =

21dB (dBm/Hz)

ATTENUATION =

47dB (dBm/Hz)

Figure 21. Noise Floor at 15 MHz Offset Frequency Distribution at

Worst-Case Conditions and Different Attenuation Settings

–170

–165

–160

–155

–150

–145

–140

–25

–20

–15

–10

–5

OUTPUT POWER (dBm)

Figure 22. Noise Floor at 0 dB Attenuation vs. Output Power

at Nominal Conditions

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