 2014 Microchip Technology Inc.

Preliminary

DS70005165A-page 11

SST12CP21

FIGURE 6-9:

SCHEMATIC WITH HARMONIC FILTER FOR 256 QAM APPLICATIONS

RFOUT

2.7 pF

50

Ω /1mm

VREG

Vcc

VDET

70005165 Schematic.2.1

Suggested operation conditions:

2. Center slug to RF ground

* Note: R = 10

Ω for robustness at

0.1 µF

1.0nH

1.0 pF

10 pF

10 µF

2

56

8

16

15

1

14

49

11

12

10

13

3

7

RFIN

50

Ω

15

Ω

0.1 µF

2.7 nF

Bias

Circuit

15 nH

1 µF

1.3nH

2.0 pF

2.7nH

1.0 pF

0.1 µF

0

Ω*