Philips Semiconductors

Product specification

SA602A

Double-balanced mixer and oscillator

1997 Nov 07

7

602A

4

5

3

6

2

7

1

8

+6V

7pF

10pF

TO

BUFFER

DC CONTROL VOLTAGE

FROM SYNTHESIZER

MV2105

OR EQUIVALENT

1000pF

1000pF

5.5

µH

0.10pF

10

µF

0.06

µH

0.1

µF

3SK126

100k

2pF

TO SYNTHESIZER

100k

100k

330

2k

TO SYNTHESIZER

2N5484

2N918

0.01

µF

0.01

µF

1.0nF

SR00075

Figure 8. Colpitts Oscillator Suitable for Synthesizer Applications and Typical Buffers

87

65

4

3

2

1

SFG455A3

100nF

220pF

INPUT

47pF

22pF

1nF

100nF

10nF

VCC

6.8

µF

0.5 to 1.3

µH

0.209 to 0.283

µH

10pF

34.545MHz THIRD OVERTONE CRYSTAL

602A

OR EQUIVALENT

SR00076

Figure 9. Typical Application for Cellular Radio