ADF4193BCPZ datasheet(9/28 Pages) AD

9 / 28 page

ADF4193

Rev. B | Page 9 of 28

TIME (

μs)

–1

VTUNE

CPOUT+

CPOUT–

DCS1800 Tx SETUP, 60kHz LOOP BW.

MEASURED ON EVAL-ADF4193-EB1

EVALUATION BOARD.

TIMERS: ICP = 28, SW1/SW2, SW3 = 35.

FREQUENCY LOCK IN WIDE BW MODE @ 4

μs.

Figure 10. VTUNE Settling Transient for a 75 MHz Jump from 1818 MHz to

1893 MHz with Sirenza 1843T VCO

TIME (

μs)

–5

–50

–10

–20

–30

–40

+25

°C

+85

°C

–40

°C

DCS1800 Tx SETUP, 60kHz LOOP BW.

MEASURED ON EVAL-ADF4193-EB1

EVALUATION BOARD WITH AD8302

PHASE DETECTOR.

TIMERS: ICP = 28, SW1/SW2, SW3 = 35.

PEAK PHASE ERROR < 5

° @ 17.8μs

Figure 11. Phase Settling Transient for a 75 MHz Jump from 1818 MHz to

1893 MHz (VTUNE 1.8 V to 3.7 V with Sirenza 1843T VCO)

CPOUT + / CPOUT – VOLTAGE (V)

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

–8

–6

–4

–2

–2.0

–1.5

–1.0

–0.5

0.5

1.0

1.5

2.0

5.0

ICPOUT + P, ICPOUT – P

CHARGE PUMP MISMATCH (%)

NORMAL OPERATING RANGE

ICPOUT + N, ICPOUT – N

IUP = | ICPOUT + P | + | ICPOUT – N |

IDOWN = | ICPOUT – P | + | ICPOUT + N |

Figure 12. Differential Charge Pump Output Compliance Range and

Charge Pump Mismatch with VP1 = VP2 = 5 V

TIME (

μs)

–1

VTUNE

CPOUT–

CPOUT+

DCS1800 Tx SETUP, 60kHz LOOP BW.

MEASURED ON EVAL-ADF4193-EB1

EVALUATION BOARD.

TIMERS: ICP = 28, SW1/SW2, SW3 = 35.

FREQUENCY LOCK IN WIDE BW MODE @ 5

μs.

Figure 13. VTUNE Settling Transient for a 75 MHz Jump Down from 1893 MHz to

1818 MHz, the Bottom of the Allowed Tuning Range with the Sirenza 1843T VCO

TIME (

μs)

–5

–50

–10

–20

–30

–40

+25

°C

+85

°C

–40

°C

DCS1800 Tx SETUP, 60kHz LOOP BW.

MEASURED ON EVAL-ADF4193-EB1

EVALUATION BOARD WITH AD8302

PHASE DETECTOR.

TIMERS: ICP = 28, SW1/SW2, SW3 = 35.

PEAK PHASE ERROR < 5

° @ 19.2μs

Figure 14. Phase Settling Transient for a 75 MHz Jump from 1893 MHz to

1818 MHz (VTUNE = 3.7 V to 1.8 V with Sirenza 1843T VCO)

FREQUENCY (MHz)

1780

1800

1820

1840

1860

1880

1900

1920

1940

VP1 = VP2 = 5V

VP3 = 5.5V

VCMR = 3.3V

CPOUT– (= AIN–)

AOUT (= VTUNE)

CPOUT+ (= AIN+)

Figure 15. Tuning Range with a Sirenza 1843T VCO and a 5.5 V Differential

Amplifier Power Supply Voltage

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