SA8025ADK datasheet(18/23 Pages) PHILIPS

18 / 23 page

Philips Semiconductors

Product specification

SA8025A

1.8GHz low-voltage Fractional-N synthesizer

1996 Oct 15

TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

3/3V

3/5V

5/5V

N=100

VDD/VDDA

–5

–10

–15

–20

–25

–30

FREQUENCY (MHz)

SR00569

Figure 18. Reference Divider Minimum Input Power vs

Frequency and Supply

TA =amb,

PA=1,

N=100

110

130

150

FREQUENCY (MHz)

–5

–10

–15

–20

–25

–30

VDD/VDDA

3/3V

3/5V

5/5V

SR00570

Figure 19. Auxiliary Divider Minimum Input Power vs

Frequency and Supply

TA = amb,

PA=0,

N=25

100

150

200

250

FREQUENCY (MHz)

VDD/VDDA

–5

–10

–15

–20

–25

–30

3/3V

3/5V

5/5V

SR00571

Figure 20. Auxiliary Divider Minimum Input Power vs

Frequency and Supply

FREQUENCY (dBm)

–5

–10

–15

–20

VDD= 3V,

VDDA= 5V,

N = 100

t = –40

°C

t = 25

°C

t = 85

°C

SR00572

Figure 21. Reference Divider Minimum Input Power vs

Frequency and Temperature

VDD =3V,

VDDA=5V,

PA=1,

N=100

FREQUENCY (MHz)

–10

–15

–20

–25

t = –40

°C

t = 25

°C

t = 85

°C

SR00573

Figure 22. Auxiliary Divider Minimum Input Power vs

Frequency and Temperature

VDD=3V,

VDDA=5V

100

150

200

FREQUENCY (MHz)

–5

–10

–15

–20

t = –40

°C

t = 25

°C

t = 85

°C

PA=0,

N=25

SR00574

Figure 23. Auxiliary Divider Minumum Input Power vs

Frequency and Temperature

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