HMC7044 datasheet(17/72 Pages) AD

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Data Sheet

HMC7044

Rev. B | Page 17 of 72

TYPICAL PERFORMANCE CHARACTERISTICS

Unless otherwise noted, PFD PLL1 = 7.68 MHz, PFD PLL2 = 122.88 MHz × 2; ICP1 = 1.92 mA, ICP2 = 2.56 mA (wide loop), ICP2 = 1.12 mA

(narrow loop), PLL1 loop BW ~ 70 Hz, PLL2 wide loop BW ≈ 650 kHz, PLL2 narrow loop BW ≈ 215 kHz, PLL2 narrow loop filter =

1.1 nF | 160 Ω × 33 nF; PLL2 wide loop filter = 150 pF | 430 Ω × 4.7 nF; PLL1 loop filter = 4.7 nF | 10 µF × 1.2 kΩ.

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100

10k

100k

10M

FREQUENCY (Hz)

NOISE:

ANALYSIS RANGE X: BAND MARKER

ANALYSIS RANGE Y: BAND MARKER

INTG NOISE: –66dBc/20MHz

RMS NOISE: 696µrad

0.004°

RMS JITTER: 45fs

RESIDUAL FM: 1.6kHz

1: 1kHz, –107.8dBc/Hz

2: 10kHz, –119.5dBc/Hz

3: 100kHz, –124.7dBc/Hz

4: 1MHz, –131.5Bc/Hz

5: 10MHz, –153.1dBc/Hz

6: 20MHz, –154.4dBc/Hz

7: 20MHz, –154.4dBc/Hz

START 12kHz

STOP 20MHz

CENTER 10MHz

SPAN 20MHz

PLL1

CASCADED PLL1 + PLL2

Figure 3. Cascaded Phase Noise at 2457.6 MHz, PLL2 Wide Loop Bandwidth

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10k

100k

10M

FREQUENCY (Hz)

1: 1kHz, –105.3dBc/Hz

2: 10kHz, –108.5dBc/Hz

3: 100kHz, –111.4dBc/Hz

4: 800kHz, –134.2dBc/Hz

5: 1MHz, –136.5dBc/Hz

6: 10MHz, –153.3dBc/Hz

7: 20MHz, –154.6dBc/Hz

x: START 12kHz

STOP 20MHz

CENTER 10MHz

SPAN 20MHz

WIDE LOOP

NARROW LOOP

NOISE:

ANALYSIS RANGE X: BAND MARKER

ANALYSIS RANGE Y: BAND MARKER

INTG NOISE: –56.9dBc/20MHz

RMS NOISE: 2.0µrad

.116°

RMS JITTER: 131fs

RESIDUAL FM: 1.5kHz

Figure 4. Phase Noise at 2457.6 MHz, Narrow vs. PLL2 Wide Loop

Bandwidth

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100

10k

100k

10M

FREQUENCY (Hz)

1: 1kHz, –110.4dBc/Hz

2: 10kHz, –120.0dBc/Hz

3: 100kHz, –124.9dBc/Hz

4: 1MHz, –131.2dBc/Hz

5: 10MHz, –153.2dBc/Hz

6: 20MHz, –154.5dBc/Hz

7: 20MHz, –154.5dBc/Hz

x: START 12kHz

STOP 20MHz

CENTER 10MHz

SPAN 20MHz

NOISE:

ANALYSIS RANGE X: BAND MARKER

ANALYSIS RANGE Y: BAND MARKER

INTG NOISE: –66.1dBc/20.0MHz

RMS NOISE: 702µrad

.040°

RMS JITTER: 45fs

RESIDUAL FM: 1.6kHz

CRYSTEK VCXO

WENZEL VCXO

Figure 5. PLL2 Phase Noise vs. Frequency, VCXO Quality at 2457.6 MHz,

Wide Loop Bandwidth

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100

10k

100k

FREQUENCY (Hz)

TOTAL PLL1 NOISE (SIMULATED)

PFD/CP NOISE (SIMULATED)

WENZEL REF (SIMULATED)

VCXO (SIMULATED)

TOTAL PLL1 NOISE (MEASURED)

Figure 6. Closed-Loop Phase Noise at 122.88 MHz, PLL1 Measurement vs.

Simulated, Clean Reference Source, ~70 Hz Loop Bandwidth 80° Phase Margin

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10k

100k

FREQUENCY (Hz)

TOTAL PLL1 OUTPUT (SIMULATED)

PFD/CP NOISE (SIMULATED)

NOISY SOURCE (SIMULATED)

VCXO (SIMULATED)

NOISY SOURCE, OPEN LOOP (MEASURED)

TOTAL PLL1 NOISE (MEASURED)

Figure 7. Closed-Loop Phase Noise at 122.88 MHz, PLL1 Measurement vs.

Simulated, Noisy Reference Source, ~70 Hz Loop Bandwidth, 80° Phase Margin

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1600

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2600

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FREQUENCY (MHz)

800kHz WIDE LOOP

800kHz NARROW LOOP

20×LOG (800kHz WIDE LOOP)

20×LOG (800kHz NARROW LOOP)

Figure 8. Phase Noise vs. Frequency at Common Output Frequencies

HMC7044 Datasheet(PDF) 17 Page - Analog Devices

HMC7044 Datasheet(HTML) 17 Page - Analog Devices

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