SA7025 Datasheet, PDF (17/22 Pages) NXP Semiconductors – Low-voltage 1GHz fractional-N synthesizer

Philips Semiconductors
1GHz low-voltage Fractional-N synthesizer
Product specification
SA7025
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
0
–5
–10
–15
V_DD/V_DDA
–20
3/3V
3/5V
5/5V
–25
N=100
–30
10 15 20 25 30 35 40 45 50 55
FREQUENCY (MHz)
SR00617
Figure 18. Reference Divider Minimum Input Power vs
frequency and Supply
5
V_DD= 3V,
0
V_DDA= 5V,
N = 100
–5
–10
t = –40°C
–15
t = 25°C
t = 85°C
–20
10
15
20
25
30
35
40
FREQUENCY (dBm)
SR00631
Figure 21. Reference Divider Minimum Input Power vs
Frequency and Temperature
0
–5
T_A =amb,
PA=1,
–10
N=100
V_DD/V_DDA
3/3V
3/5V
5/5V
–10
V_DD =3V,
V_DDA=5V,
PA=1,
N=100
–15
t = –40°C
t = 25°C
t = 85°C
–15
–20
–20
–25
–30
30
50
70
90
110
130
150
FREQUENCY (MHz)
SR00618
Figure 19. Auxiliary Divider Minimum Input Power vs
Frequency and Supply
0
T_A = amb,
–5 _PA=0,
N=25
–10
V_DD/V_DDA
–15
3/3V
–20
3/5V
5/5V
–25
–30
50
100
150
200
250
FREQUENCY (MHz)
Figure 20. Auxiliary Divider Minimum Input Power vs
Frequency and Supply
–25
30
50
70
FREQUENCY (MHz)
90
SR00632
Figure 22. Auxiliary Divider Minimum Input Power vs
Frequency and Temperature
0
V_DD=3V,
V_DDA=5V
–5
PA=0,
N=25
–10
t = –40°C
t = 25°C
t = 85°C
–15
–20
50
100
150
FREQUENCY (MHz)
200
SR00619
Figure 23. Auxiliary Divider Minumum Input Power vs
Frequency and Temperature
1996 Aug 6
17