ADMV1014ACCZ-R7 datasheet(33/42 Pages) AD

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Data Sheet

ADMV1014

Rev. A | Page 33 of 42

LO FREQUENCY (GHz)

IF I: QUAD_FILTERS = 0

IF I: QUAD_FILTERS = 5

IF I: QUAD_FILTERS = 10

IF I: QUAD_FILTERS = 15

IF Q: QUAD_FILTERS = 0

IF Q: QUAD_FILTERS = 5

IF Q: QUAD_FILTERS = 10

IF Q: QUAD_FILTERS = 15

–40

–80

–75

–65

–55

–45

–70

–60

–50

Figure 113. LO To IF Leakage vs. RF Frequency for Four Different

QUAD_FILTERS Settings, fIF = 3.5 GHz (Upper Sideband)

VVA TEMPERATURE COMPENSATION

Figure 114 shows the conversion gain vs. RF frequency at two

different Register 0x0B settings and three different temperatures

for IF mode. The recommended value suggested in the Start-Up

Sequence section provides the highest conversion gain. If the

priority is to decrease the conversion gain variation across

temperature, Register 0x0B can be set to 0x726C. However, at

this value, the conversion gain is lower at each temperature.

RF FREQUENCY (GHz)

+85°C AT REG 0x0B = 0x727C

+25°C AT REG 0x0B = 0x727C

–40°C AT REG 0x0B = 0x727C

+85°C AT REG 0x0B = 0x726C

+25°C AT REG 0x0B = 0x726C

–40°C AT REG 0x0B = 0x726C

–10

–5

Figure 114. Conversion Gain vs. RF Frequency at Maximum Gain for Various

PERFORMANCE BETWEEN DIFFERENTIAL vs.

SINGLE-ENDED LO INPUT

Figure 115 to Figure 117 show the conversion gain, input IP3

and image rejection performance for operating the ADMV1014

LO input as differential vs. SE. The measurements were

performed with 0 dBm LO input power, IF mode, with an IF

frequency of 3.5 GHz, upper sideband, and TA = 25°C.

RF FREQUENCY (GHz)

LO DIFF

LO SE P SIDE

LO SE N SIDE

Figure 115. Conversion Gain vs. RF Frequency for Three Different LO Mode

Settings, fIF = 3.5 GHz (Upper Sideband)

RF FREQUENCY (GHz)

–10

–8

–6

–4

–2

LO DIFF

LO SE P SIDE

LO SE N SIDE

Figure 116. Input IP3 vs. RF Frequency for Three Different LO Mode Settings,

RF Amplitude = −30 dBm per Tone at 20 MHz Spacing, fIF = 3.5 GHz

(Upper Sideband)

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