ADF4156BCPZ datasheet(7/24 Pages) AD

7 / 24 page

ADF4156

Rev. 0 | Page 7 of 24

TYPICAL PERFORMANCE CHARACTERISTICS

PFD = 25 MHz, loop bandwidth = 20 kHz, reference = 100 MHz, ICP = 313 μA, phase noise measurements taken on the Agilent E5500

phase noise system.

–40

FREQUENCY (GHz)

–5

–10

–15

–20

–25

–30

–35

3456

P= 4/5

P= 8/9

Figure 5. RF Input Sensitivity

100M

FREQUENCY (Hz)

–20

–40

–60

–80

–100

–120

–140

–160

–180

10k

100k

10M

LOW NOISE MODE

RF = 5800.25MHz, PFD = 25MHz, N = 232,

FRAC = 2, MOD = 200, 20kHz LOOP BW, ICP = 313µA,

DSB INTEGRATED PHASE ERROR = 0.73° RMS,

PHASE NOISE @ 5kHz = –89.5dBc/Hz,

ZCOMM V940ME03 VCO

Figure 6. Phase Noise and Spurs, Low Noise Mode

100M

FREQUENCY (Hz)

–20

–40

–60

–80

–100

–120

–140

–160

–180

10k

100k

10M

LOW SPUR MODE

RF = 5800.25MHz, PFD = 25MHz, N = 232, FRAC = 2,

MOD = 200, 20kHz LOOP BW, ICP = 313µA,

DSB INTEGRATED PHASE ERROR = 1.09° RMS,

PHASE NOISE @ 5kHz = –83dBc/Hz, ZCOMM V940ME03 VCO

Figure 7. Phase Noise and Spurs, Low Spur Mode.

(Note that fractional spurs are removed and only

the integer boundary spur remains in low spur mode.)

6.00

5.65

–100

900

TIME (µs)

5.95

5.90

5.85

5.80

5.75

5.70

100

200

300

400

500

600

700

800

CSR OFF

CSR ON

Figure 8. Lock Time for 200 MHz Jump from 5705 MHz to 5905 MHz

with CSR On and Off

5.65

5.60

5.95

5.90

5.85

5.80

5.75

5.70

–100

900

TIME (µs)

100

200

300

400

500

600

700

800

CSR ON

CSR OFF

Figure 9. Lock Time for 200 MHz Jump from 5905 MHz to 57905 MHz

with CSR On and Off

VCP (V)

–6

–2

–4

–5

–3

–1

012

345

Figure 10. Charge Pump Output Characteristics

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