SA7025 Datasheet, PDF (16/22 Pages) NXP Semiconductors – Low-voltage 1GHz fractional-N synthesizer

Philips Semiconductors
1GHz low-voltage Fractional-N synthesizer
Product specification
SA7025
TYPICAL PERFORMANCE CHARACTERISTICS
11
10 ^VCCP ^{= V}DDA ^{= V}DD
EM = EA = 1, Note5
9
8
7
t = –40°C
6
t = 25°C
t = 85°C
5
2.7
3.5
4.5
5.5
SUPPLY VOLTAGE (V)
SR00611
Figure 12. Operational Supply Current vs Supply Voltage and
Temperature
7
6
V_CCP = V_DDA = V_DD
EA=0, EM=1, Note5
5
4
3
t = –40°C
2
t = 25°C
t = 85°C
1
2.7
3.5
4.5
SUPPLY VOLTAGE (V)
5.5
SR00612
Figure 13. Auxiliary Operational Supply Current vs Supply
Voltage and Temperature
20
0
V_DD = V_CCP
2.7V
3.5V
–20
4.5V
5.5V
–40 T_A = 25°C,
N = 3971.625
–60
FREQUENCY (MHz)
SR00613
Figure 14. Main Divider Input Power vs frequency and Supply
8.5
8
V_CCP = V_DDA = V_DD
7.5
EA=0, EM=1, Note5
7
6.5
6
5.5
5
t = –40°C
t = 25°C
4.5
t = 85°C
4
2.7
3.5
4.5
5.5
SUPPLY VOLTAGE (V)
SR00614
Figure 15. Main Operational Supply Current vs Supply Voltage
and Temperature
3.5
V_DD = 3V, V_DDA = 5V
3 Pin = –10dBm,
ref divider halted
2.5
2
t = –40°C
1.5
t = 25°C
t = 85°C
1
50
100
150
AUXILIARY INPUT FREQUENCY (MHz)
SR00615
Figure 16. Auxiliary Operational Supply Current vs Frequency
and Temperature
20
0
t=–40°C
t=25°C
–20
t=85°C
–40 _{VDD = VCCP = 3V}
N=3971.625
–60
FREQUENCY (MHz)
SR00616
Figure 17. Main Divider Input Power vs Frequency and
Temperature
1996 Aug 6
16