
Philips Semiconductors
Product data
SA8028
2.5 GHz sigma delta fractional-N /
760 MHz IF integer frequency synthesizers
2002 Feb 22
23
–48
–45
–42
–39
–36
–33
–30
–27
–24
–21
–18
–15
–12
0
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000
2.7V
3.0V
3.6V
SR02404
–9
–6
–3
MINIMUM
INPUT
LEVEL
(dBm)
INPUT FREQUENCY (MHz)
Figure 27.
RF (main) divider input sensitivity vs. frequency
and supply voltage (Temp = 25
°C, Iset = 164 A, N = 509)
–48
–45
–42
–39
–36
–33
–30
–27
–24
–21
–18
–15
–12
0
100
200 300 400 500 600 700 800
900
1000 1
100
1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500
2600 2700 2800 2900 3000
–40C
25C
85C
–9
–6
–3
SR02405
MINIMUM
INPUT
LEVEL
(dBm)
INPUT FREQUENCY (MHz)
Figure 28.
RF (main) divider input sensitivity vs. frequency
and temperature (VCC = 3.0 V, Iset = 164 A, N = 509)
–48
–45
–42
–39
–36
–33
–30
–27
–24
–21
–18
–15
–12
0
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000
2.7V
3.0V
3.6V
–9
–6
–3
SR02406
MINIMUM
INPUT
LEVEL
(dBm)
INPUT FREQUENCY (MHz)
Figure 29.
RF (main) fractional divider input sensitivity vs.
frequency and supply voltage (Temp = 25
°C, Iset = 164 A,
N = 509.5)
–48
–45
–42
–39
–36
–33
–30
–27
–24
–21
–18
–15
–12
0
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000
–40C
25C
85C
SR02407
–9
–6
–3
MINIMUM
INPUT
LEVEL
(dBm)
INPUT FREQUENCY (MHz)
Figure 30.
RF (main) fractional divider input sensitivity
vs. frequency and temperature (VCC = 3.0 V, Iset = 164 A,
N = 509.5)
–45
–42
–39
–36
–33
–30
–27
–24
–21
–18
–15
–12
0
20
60
100
140
180
220
260
300
340
380
420
460
500
540
580
620
660
700
740
780
820
860
900
940
980
1020
2.7V
3.0V
3.6V
SR02408
–9
–6
–3
MINIMUM
INPUT
LEVEL
(dBm)
INPUT FREQUENCY (MHz)
Figure 31.
IF (aux) divider input sensitivity vs. frequency and
supply voltage (Temp = 25
°C, Iset = 164 A,
divider ratio = 16383)
–45
–42
–39
–36
–33
–30
–27
–24
–21
–18
–15
–12
0
20
60
100
140
180
220
260
300
340
380
420
460
500
540
580
620
660
700
740
780
820
860
900
940
980
1020
–40C
25C
85C
SR02409
–9
–6
–3
MINIMUM
INPUT
LEVEL
(dBm)
INPUT FREQUENCY (MHz)
Figure 32.
IF (aux) divider input sensitivity vs. frequency and
temperature (VCC = 3.0 V, Iset = 164 A, divider ratio = 16383)