Low-Noise, Regulated, -2V GaAsFET Bias

_______________________________________________________________________________________

3

-2.040

010

OUTPUT VOLTAGE

vs. OUTPUT CURRENT

-2.050

OUTPUT CURRENT (mA)

6

-2.070

-2.060

24

8

13

5

7

9

-2.040

OUTPUT VOLTAGE vs. INPUT VOLTAGE

OVER TEMPERATURE

-2.050

-2.045

INPUT VOLTAGE (V)

-2.065

-2.060

-2.055

10

6

24

8

35

79

20

0

10

MAXIMUM OUTPUT CURRENT

vs. INPUT VOLTAGE

60

40

INPUT VOLTAGE (V)

6

120

100

80

24

8

357

9

(CIRCUIT OF FIG 2a)

(CIRCUIT OF FIG 2d)

(CIRCUIT OF FIG 2d)

(CIRCUIT OF FIG 2a)

High-current operation not

recommended for extended

periods of time.

0

10

N0-LOAD SUPPLY CURRENT

vs. INPUT VOLTAGE

2

1

INPUT VOLTAGE (V)

6

5

4

3

24

8

35

79

0

10

NEGOUT CURRENT vs. INPUT VOLTAGE

10

5

INPUT VOLTAGE (V)

6

30

25

20

15

24

8

35

79

SHUTDOWN

(MAX844)

0

SUPPLY CURRENT vs. TEMPERATURE

3

2

1

TEMPERATURE (°C)

40

7

6

5

4

-40

0

80

-20

20

60

100

0.4

START-UP TIME vs. INPUT VOLTAGE

1.6

1.2

0.8

INPUT VOLTAGE (V)

6

2.8

2.4

2.0

24

8

3

579

10

__________________________________________Typical Operating Characteristics