ADRF6612ACPZ-R7 datasheet(24/57 Pages) AD

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ADRF6612

Data Sheet

Rev. A | Page 24 of 57

10k

100k

10M

100M

–160

–140

–120

–100

–80

–60

–40

OFFSET FREQUENCY (Hz)

Figure 66. VCO_3 Open-Loop Phase Noise vs. Offset Frequency,

fVCO_3 = 3.2 GHz, Divide by Two Selected, VCOVTUNE = 1.5 V

–230

–225

–220

–215

–210

–205

–200

1430

1630

1830

2030

2230

2430

2630

2830

LO FREQUENCY (MHz)

–40°C

+25°C

+85°C

Figure 67. PLL Figure of Merit (FOM) vs. LO Frequency, Integer Mode

–180

–160

–140

–120

–100

–80

–60

–40

–20

1430

1630

1830

2030

2230

2430

2630

2830

LO FREQUENCY (MHz)

10MHz OFFSET

500kHz OFFSET

100kHz OFFSET

1kHz OFFSET

–40°C

+25°C

+85°C

Figure 68. Open-Loop Phase Noise vs. LO Frequency,

Divide by Two Selected

–160

–150

–140

–130

–120

–110

–100

–90

–80

–70

–60

0.001

0.01

0.1

100

OFFSET FREQUENCY (MHz)

LO_DIV = /2

LO_DIV = /4

LO_DIV = /8

Figure 69. VCO_3 Closed-Loop Phase Noise for Various LO_DIV Dividers vs.

Offset Frequency, fVCO_3 = 3.2 GHz

–230

–225

–220

–215

–210

–205

–200

1430

1630

1830

2030

2230

2430

2630

2830

LO FREQUENCY (MHz)

–40°C

+25°C

+85°C

Figure 70. PLL Figure of Merit (FOM) vs. LO Frequency, Fractional Mode Offset =

45 kHz, Bleed = 125 µA

–170

–160

–150

–140

–130

–120

–110

–100

–90

1430

1630

1830

2030

2230

2430

2630

2830

LO FREQUENCY (MHz)

–40°C

+25°C

+85°C

50kHz OFFSET

200kHz OFFSET

1MHz OFFSET

40MHz OFFSET

Figure 71. Open-Loop Phase Noise vs. LO Frequency,

Divide by Two Selected

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