ADF4108

Rev. 0 | Page 8 of 20

TYPICAL PERFORMANCE CHARACTERISTICS

0.50000

0.60000

0.70000

0.80000

0.90000

1.00000

1.10000

1.20000

1.30000

1.40000

1.50000

1.60000

1.70000

1.80000

1.90000

2.00000

2.10000

2.20000

2.30000

2.40000

2.50000

2.60000

2.70000

2.80000

2.90000

3.00000

3.10000

3.20000

3.30000

3.40000

3.50000

3.60000

3.70000

3.80000

3.90000

4.00000

4.10000

4.20000

–17.2820

–20.6919

–24.5386

–27.3228

–31.0698

–34.8623

–38.5574

–41.9093

–45.6990

–49.4185

–52.8898

–56.2923

–60.2584

–63.1446

–65.6464

–68.0742

–71.3530

–75.5658

–79.6404

–82.8246

–85.2795

–85.6298

–86.1854

–86.4997

–88.8080

–91.9737

–95.4087

–99.1282

–102.748

–107.167

–111.883

–117.548

–123.856

–130.399

–136.744

–142.766

–149.269

–154.884

0.89148

0.88133

0.87152

0.85855

0.84911

0.83512

0.82374

0.80871

0.79176

0.77205

0.75696

0.74234

0.72239

0.69419

0.67288

0.66227

0.64758

0.62454

0.59466

0.55932

0.52256

0.48754

0.46411

0.45776

0.44859

0.44588

0.43810

0.43269

0.42777

0.42859

0.43365

0.43849

0.44475

0.44800

0.45223

0.45555

0.45313

0.45622

4.30000

4.40000

4.50000

4.60000

4.70000

4.80000

4.90000

5.00000

5.10000

5.20000

5.30000

5.40000

5.50000

5.60000

5.70000

5.80000

5.90000

6.00000

6.10000

6.20000

6.30000

6.40000

6.50000

6.60000

6.70000

6.80000

6.90000

7.00000

7.10000

7.20000

7.30000

7.40000

7.50000

7.60000

7.70000

7.80000

7.90000

8.00000

0.45555

0.46108

0.45325

0.45054

0.45200

0.45043

0.45282

0.44287

0.44909

0.44294

0.44558

0.45417

0.46038

0.47128

0.47439

0.48604

0.50637

0.52172

0.53342

0.53716

0.55804

0.56362

0.58268

0.59248

0.61066

0.61830

0.61633

0.61673

0.60597

0.58376

0.57673

0.58157

0.60040

0.61332

0.62927

0.63938

0.65320

0.65804

–159.680

–164.916

–168.452

–173.462

–176.697

178.824

174.947

170.237

166.617

162.786

158.766

153.195

147.721

139.760

132.657

125.782

121.110

115.400

107.705

101.572

97.5379

93.0936

89.2227

86.3300

83.0956

80.8843

78.0872

75.3727

73.9456

73.5883

74.1975

76.2136

77.1545

76.1122

74.8359

74.0546

72.0061

69.9926

Freq

MAGS11

ANGS11

FREQ UNIT:

GHz

KEYWORD: R

PARAM TYPE:

s

DATA FORMAT: MA

Freq

MAGS11

ANGS11

Figure 5. S Parameter Data for the RF Input

0

–35

–30

–25

–20

–15

–10

–5

19

8

7

6

5

4

3

2

RF INPUT FREQUENCY (GHz)

Figure 6. RF Input Sensitivity

–50

–150

–140

–130

–120

–110

–100

–90

–80

–70

–60

1kHz

10MHz

FREQUENCY OFFSET

PFD FREQUENCY = 1MHz

LOOP BANDWIDTH = 50kHz

PHASE NOISE = –82dBc/Hz @ 1kHz

HMC506LP4 VCO

Figure 7. Phase Noise at 7.9 GHz Phase Noise

0

–120

–100

–80

–60

–40

–20

–2MHz

–1MHz

7900MHz

1MHz

2MHz

FREQUENCY

–61dBc

PFD FREQUENCY = 1MHz

LOOP BANDWIDTH = 50kHz

RES BANDWIDTH = 3kHz

VIDEO BANDWIDTH = 3kHz

AVERAGES = 1

OUTPUT POWER = –0.3dBm

HMC506LP4 VCO

–0.3dBm

Figure 8. Reference Spurs at 7.9 GHz

Note: The spurs are dominated by the leakage current of the tuning port on

the HMC506LP4 VCO. The leakage current was measured to be 27 nA.

6

–6

–5

–4

–3

–2

–1

0

1

2

3

4

5

5.0

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

Figure 9. Charge Pump Output Characteristics

–120

–180

–170

–160

–150

–140

–130

100M

10k

100k

1M

10M

PHASE FREQUENCY DETECTOR (Hz)

Figure 10. Phase Noise (Referred to CP Output) vs. PFD Frequency