Data Sheet

HMC8412

Rev. 0 | Page 17 of 18

APPLICATIONS INFORMATION

The basic connections for operating the HMC8412 over the

specified frequency range are shown in Figure 60. No external

biasing inductor is required, allowing the 5 V supply to be

decoupling capacitors are recommended. The power supply

decoupling capacitors shown in Figure 60 represent the

configuration used to characterize and qualify the HMC8412.

It is possible to reduce the number of capacitors, but this varies

from system to system. It is recommended to first remove the

largest capacitors that are farthest from the device when

reducing the number of capacitors.

pins. A default value of 1.47 kΩ is recommended, which results

GND

R1

1.47kΩ

C3

0.1µF

C2

100pF

C1

0.1µF

1

2

4

5

3

6

GND

GND

GND

Figure 60. Typical Application Circuit

RECOMMENDED BIAS SEQUENCING

Power-Up Sequence

To power up, follow this bias sequence:

2. Apply the RF signal.

Power-Down Sequence

To power down, follow this bias sequence:

1. Turn off the RF signal.

Table 8. Recommended Bias Resistor Values

Total Current (mA)

670

80

77.05

2.95

790

75

72.29

2.71

1000

70

67.53

2.47

1170

65

62.76

2.24

1470

60

58.04

1.96

1730

55

53.24

1.76

2100

50

48.45

1.55

2600

45

43.67

1.33

3300

40

38.89

1.11

4300

35

34.11

0.89

5900

30

29.38

0.62

8500

25

24.51

0.49

14000

20

19.69

0.31