HFA3624 데이터 시트보기 (PDF) - Intersil

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HFA3624

2.4GHz Up/Down Converter

Intersil 

HFA3624

Typical Performance Curves (Continued)

16.5

TA = 25oC, IF = 280MHz

LO = 2.17GHz

16

15.5

15

14.5

14

13.5

-6 -5 -4 -3 -2 -1 0 1 2 3

LO DRIVE (dBm)

FIGURE 50. RECEIVE MIXER SSB NOISE FIGURE vs LO DRIVE

2.35

TA = 25oC, RF = 2.45GHz

2.30

IF = 280MHz (NOTE)

2.25

2.20

2.15

2.10

2.05

2.00

-6 -5 -4 -3 -2 -1 0

1

2

3

LO DRIVE (dBm)

NOTE: Transmit mixer measured with Impedance Transform Net-

work 250Ω at device to 50Ω at the source. Refer to Figure 5, pin 19.

FIGURE 51. TRANSMIT MIXER GAIN vs LO DRIVE

-9.2

-9.3

TA = 25oC, RF = 2.45GHz

IF = 280MHz (NOTE)

-9.4

-9.5

-9.6

-9.7

-9.8

-9.9

-10.0

-6 -5 -4 -3 -2 -1 0 1 2 3

LO DRIVE (dBm)

NOTE: Transmit mixer measured with Impedance Transform Net-

work 250Ω at device to 50Ω at the source. Refer to Figure 5, pin 19.

FIGURE 52. TRANSMIT MIXER OUTPUT 1dB COMPRESSION

vs LO DRIVE

4.0

TA = 25oC, RF = 2.45GHz (NOTE)

3.5

3.0

+5.5V

2.5

+4.0V

2.0

+3.0V

1.5

+2.7V

1.0

0.5

0

10

20

40 60 80 100

200

400

IF FREQUENCY (MHz)

NOTE: TXM_IF input matching network modified for each IF fre-

quency as described in Table 1.

FIGURE 53. TRANSMIT MIXER GAIN vs IF FREQUENCY

TABLE 1. TXM_IF INPUT 50Ω TO 250Ω IMPEDANCE TRANSFORM CIRCUIT

COMPONENT VALUES

IF FREQ

LO CAPACITORS

C20, C28

IF BYPASS

C24, C21

IF SHUNT C

C25

10MHz

5pF

0.1µF

150pF

20MHz

5pF

0.022µF

68pF

40MHz

5pF

0.012µF

33pF

70MHz

5pF

0.0068mF

18pF

100MHz

7pF

0.0033mF

12pF

200MHz

7pF

1000pF

3.9pF

280MHz

10pF

470pF

1.5pF

400MHz

10pF

330pF

0

NOTE: Refer to Figure 5, pin 19.

2-44

IF SERIES L

L4

1.2µH

680nH

330nH

180nH

120nH

68nH

47nH

33nH

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