3-6

RF2312

Rev C6 051025

Application Schematic

5MHz to 50MHz Reverse Path

Application Schematic

10dB Gain

1

2

3

4

8

7

6

5

RF OUT

RF IN

V

CC

NOTE 1:

Optional resistor R

increase output capability or linearity for signals with high crest factors.

10 nF

10 nF

10

μH

30

Ω

100 nF

100 nF

R

S

1 - 2 k

Ω

1

2

3

4

8

7

6

5

RF OUT

RF IN

R5 is used to maintain the correct bias level at higher supply voltages and is also required in this configuration. The RC network of R2

and C3 should be kept physically as short as possible. R2 can be adjusted as required to improve the impedance matching. R6 and

R7 reduce the typical gain by increasing the emitter resistance. L1 should be at least 200

Ω reactive at the lowest operating

frequency. C1 and C2 should be less than 10

Ω at the lowest operating frequency. C4 and C5 improve gain flatness.

V

C1

220 pF

R5

1 - 2 k

Ω

C3

10 nF

R2

470

Ω

R6

7.5

Ω

R7

7.5

Ω

C2

220 pF

L1

330 nH

R1 = 21 - 30

Ω

C4

TBD

C5

TBD