MGCT03

8

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

CONTROL

MICROPROCESSOR

1GHz LO 2GHz LO

MIXED SIGNAL

INTERFACE

CIRCUIT

MGCT03

900MHz

MATCHING

NETWORK

900MHz

DUPLEXER

1900MHz

MATCHING

NETWORK

1900MHz

DUPLEXER

POWER

AMPS

SAW

FILTERS

OSC CONTROL

OSC OUT

OSC BIAS

EXTERNAL

VHF OSCILLATOR

AGC

FROM PLL

Figure 5 - Typical 1900MHz output matching

network

Figure 6 - Typical 900MHz output matching

network

C3

1.2p

L4

5.6n

C1

1.2p

L5

5.6n

C4

1.2p

L3

3.9n

L1

15n

L2

15n

PIN 7

PIN 6

50

Ω SAW

FILTER

NOTE

L1 and L2 are required to provide a DC feed to the output pins

and do not form part of the matching network

C2

1.2p

C3

1.5p

L4

22n

L5

22n

C4

1.5p

L3

22n

L1

68n

L2

68n

PIN 9

PIN 8

50

Ω SAW

FILTER

NOTE

L1 and L2 are required to provide a DC feed to the output pins

and do not form part of the matching network

C2

100p

C1

100p

Figure 4 - Typical application circuit