Datasheet

Data Sheet ADF4193
Rev. F | Page 9 of 32
05328-040
TIME (µs)
(V)
–1
0
1
2
3
4
5
9876543210
V
TUNE
CP
OUT+
CP
OUT–
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 @ 4µs.
Figure 10. V
TUNE
Settling Transient for a 75 MHz Jump from 1818 MHz to
1893 MHz with Sirenza 1843T VCO
05328-008
TIME (µs)
PHASE ERROR (Degrees)
–5 0 5 10 15 20 25 30 35 40
–50
50
40
30
20
10
0
–10
–20
–30
–40
45
+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 (V
TUNE
1.8 V to 3.7 V with Sirenza 1843T VCO)
05328-012
CP
OUT
+ / CP
OUT
– VOLTAGE (V)
I
CP
(mA)
MISMATCH (%)
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
–8
–6
–4
–2
0
2
4
6
8
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
5.0
ICP
OUT
+ P, ICP
OUT
– P
CHARGE PUMP MISMATCH (%)
NORMAL OPERATING RANGE
ICP
OUT
+ N, ICP
OUT
– N
I
UP
= | ICP
OUT
+ P | + | ICP
OUT
– N |
I
DOWN
= | ICP
OUT
– P | + | ICP
OUT
+ N |
Figure 12. Differential Charge Pump Output Compliance Range and
Charge Pump Mismatch with V
P
1 = V
P
2 = 5 V
05328-041
TIME (µs)
(V)
–1
0
1
2
3
4
5
9876543210
V
TUNE
CP
OUT–
CP
OUT+
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 @ 5µs.
Figure 13. V
TUNE
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
05328-009
TIME (µs)
PHASE ERROR (Degrees)
–5 0 5 10 15 20 25 30 35 40
–50
50
40
30
20
10
0
–10
–20
–30
–40
45
+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 (V
TUNE
= 3.7 V to 1.8 V with Sirenza 1843T VCO)
05328-013
FREQUENCY (MHz)
(V)
1780 1800 1820 1840 1860 1880 1900 1920 1940
0
2
1
3
4
5
V
P
1 = V
P
2 = 5V
V
P
3 = 5.5V
V
CMR
= 3.3V
CP
OUT–
(= AIN–)
A
OUT
(= V
TUNE
)
CP
OUT+
(= AIN+)
Figure 15. Tuning Range with a Sirenza 1843T VCO and a 5.5 V Differential
Amplifier Power Supply Voltage