Aeroflex Circuit Technology

SCD7000SC REV B 7/30/01 Plainview NY (516) 694-6700

17

PLL Analog Power Filtering

The ACT 7000SC includes extra PLL Analog Power Fiiltering circuitry designed to provide low noise,

temperature stable filtering for the VccP and VssP signals. The included circuitry consists of several passive

components located at the closest possible point to the RM7000 die and is configured as shown in Figure 9.

Additional board level PPL filtering is also required.

The recommended configuration is shown in

Figure 10.

64

65

.01

µF

1000

pF

5

Ω

5

Ω

RM7000

Die

VccP

VssP

10

µF

.1

µF

5

Ω

5

Ω

64

65

VccP

VssP

1000

pF

VccInt

VssInt

Figure 10 – Recommended Board Level PLL Filter circuit

Figure 9 – ACT 7000SC Including PLL Filter Circuit

for the ACT 7000SC