Typical operating characteristics – Rainbow Electronics MAX844 User Manual
Page 3
MAX840/MAX843/MAX844
Low-Noise, Regulated, -2V GaAsFET Bias
_______________________________________________________________________________________
3
-2.040
0
10
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
-2.050
MAX840-01
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
6
-2.070
-2.060
2
4
8
1
3
5
7
9
-2.040
OUTPUT VOLTAGE vs. INPUT VOLTAGE
OVER TEMPERATURE
-2.050
-2.045
MAX840-02
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
-2.065
-2.060
-2.055
10
6
2
4
8
3
5
7
9
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
20
0
10
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
60
40
MAX840-03
INPUT VOLTAGE (V)
MAXIMUM OUTPUT CURRENT (mA)
6
120
100
80
2
4
8
3
5
7
9
V
OUT
< -1.95V
(CIRCUIT OF FIG 2a)
V
OUT
< -1.95V
(CIRCUIT OF FIG 2d)
V
OUT
< 2mVp-p RIPPLE
(CIRCUIT OF FIG 2d)
V
OUT
< 2mVp-p RIPPLE
(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
MAX840-05
INPUT VOLTAGE (V)
NO-LOAD SUPPLY CURRENT (mA)
6
5
4
3
2
4
8
3
5
7
9
0
10
NEGOUT CURRENT vs. INPUT VOLTAGE
10
5
MAX840-04
INPUT VOLTAGE (V)
NEGOUT CURRENT (mA)
6
30
25
20
15
2
4
8
3
5
7
9
V
NEGOUT
= 0.9 x V
NEGOUT(NO LOAD)
SHUTDOWN
(MAX844)
0
SUPPLY CURRENT vs. TEMPERATURE
3
2
1
MAX840-06
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
40
7
6
5
4
-40
0
80
-20
20
60
100
V
IN
= 10V
V
IN
= 3.6V
0.4
START-UP TIME vs. INPUT VOLTAGE
1.6
1.2
0.8
MAX840-07
INPUT VOLTAGE (V)
START-UP TIME (ms)
6
2.8
2.4
2.0
2
4
8
3
5
7
9
10
__________________________________________Typical Operating Characteristics
(Circuit of Figure 2a, V
IN
= 3.6V, T
A
= +25°C, unless otherwise noted.)