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13

Load Regulation @ VDD=8V,

SW=VDIG=3.3V

Load Regulation @ VDD=6V, VDIG=3.3V,

SW=GND

4.5

5

5.5

6

6.5

20

30

40

50

60

70

80

+25C

+85C

-55C

IDRAIN (mA)

6.5

7

7.5

8

8.5

80

100

120

140

160

180

200

+25C

+85C

-55C

IDRAIN (mA)

HMC981

v00.0611

ACTIVE BIAS CONTROLLER

VNEG Load Regulation @ VDD=4V

VNEG Line Regulation vs. Supply Voltage

-2.55

-2.53

-2.51

-2.49

-2.47

-2.45

4

6

8

10

12

+25C

+85C

-55C

SUPPLY VOLTAGE (V)

No load condition

-2.7

-2.6

-2.5

-2.4

-2.3

0

2

4

6

8

10

+25C

+85C

-55C

INEG (mA)

VNEG Load Regulation @ VDD=12V

-2.7

-2.6

-2.5

-2.4

-2.3

0

4

8

12

16

+25C

+85C

-55C

INEG (mA)

50

51

52

53

54

55

3.3

3.7

4.1

4.5

4.9

+25C

+85C

-55C

VDIG (V)

[1] IDRAIN is set to 53 mA

[2] HMC465LP5 is used as external amplifier