ADF4372 datasheet(4/47 Pages) AD

4 / 47 page

ADF4372

Data Sheet

Rev. 0 | Page 4 of 47

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

Output Dividers

Divider = 2

Each divide by 2 consumes additional

typical 7 mA current

Divider = 64

VCO Supply Voltage

VCC_VCO

3.15

3.3

3.45

3.3 V condition

4.75

5.25

5 V condition

VCO Supply Current

IVCO

120

3.3 V condition

135

180

5 V condition

RF8x Supply Current

RF8P and RF8N output stage is

programmable, extra current is drawn in

VCC_X1

−4 dBm setting

−1 dBm setting

2 dBm setting

5 dBm setting

RFAUX8x Supply Current

−4 dBm setting

−1 dBm setting

2 dBm setting

5 dBm setting

RF16x Supply Current

120

Low Power Sleep Mode

5.1

6.2

Hardware power-down 3.3 V VCO case

9.5

Hardware power-down 5 V VCO case

21.5

Software power-down 3.3 V VCO case

23.7

Software power-down 5 V VCO case

RF OUTPUT CHARACTERISTICS

VCO Frequency Range

4000

8000

MHz

Fundamental VCO range

RF8P and RF8N Output Frequency

62.5

8000

MHz

RFAUX8P and RFAUX8N Output

Frequency

62.5

8000

MHz

RF16P and RF16N Output Frequency

8000

16000

MHz

2 × VCO output

VCO Sensitivity

For 5 V

MHz/V

VCO frequency = 6 GHz, see Figure 33 for

KV plot

For 3.3 V

MHz/V

VCO frequency = 6 GHz, see Figure 34 for

KV plot

Frequency Pushing (Open-Loop)

MHz/V

Frequency Pulling (Open-Loop)

0.5

MHz

Voltage standing wave ratio (VSWR) = 2:1

RF8P and RF8N

MHz

VSWR = 2:1 RF16x

Maintain Lock Temperature Range2

125

°C

Maintains lock without reprogramming

device

Harmonic Content

Second Harmonic RF8P and RF8N

−25

dBc

Fundamental VCO output (RF8x)

−25

dBc

Divided VCO output (RF8x)

Third Harmonic RF8P and RF8N

−12

dBc

Fundamental VCO output RF8x)

−15

dBc

Divided VCO output (RF8x)

Second Harmonic RF16P and RF16N

−30

dBc

Measured at 20 GHz

Third Harmonic RF16P and RF16N

−30

dBc

Measured at 30 GHz

Fundamental VCO Feedthrough

−62

dBc

RF16x = 10 GHz, VCO frequency = 5 GHz

−30

dBc

RF8P and RF8N = 1 GHz,

VCO frequency = 4 GHz

RF Output Power Maximum Setting3

dBm

RF8P = 4 GHz, 7.5 nH inductor to VCC_X1

dBm

RF8P = 8 GHz, 7.5 nH inductor to VCC_X1

dBm

RF16x = 8 GHz

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