Typical operating characteristics – Rainbow Electronics MAX881R User Manual
Page 3
MAX881R
Low-Noise Bias Supply in µMAX
with Power-OK for GaAsFET PA
_______________________________________________________________________________________
3
-2.02
-1.98
-2.00
-1.94
-1.96
-1.92
1.90
-1.86
-1.88
-1.84
0
2
3
4
1
5
6
7
8
9
10
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX881R TOC01
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
CIRCUIT OF FIGURE 3a
V
IN
= 2.5V
V
IN
≥
3.6V
-2.02
-1.98
-2.00
-1.92
-1.94
-1.96
-1.86
-1.88
-1.90
-1.84
0
6
8
2
4
10
12
14
16
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX881R TOC02
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
CIRCUIT OF FIGURE 3b
V
IN
= 2.5V
V
IN
≥
3.6V
-2.03
-2.01
-2.02
-1.99
-2.00
-1.98
-1.97
-1.96
-1.95
2.0
3.0
3.5
2.5
4.0
4.5
5.0
5.5
6.0
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
MAX881R TOC03
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
I
LOAD
= 4mA
Typical Operating Characteristics
(Circuit of Figure 3, V
IN
= 3.6V, T
A
= +25°C, unless otherwise noted.)
0
10
5
25
20
15
40
35
30
45
2.0
3.5
4.0
2.5
3.0
4.5
5.0
5.5
6.0
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
MAX881r TOC04
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
V
OUT
< 2mVp-p RIPPLE
CIRCUIT OF FIGURE 3b
V
OUT
< 2mVp-p RIPPLE
CIRCUIT OF FIGURE 3a
V
OUT
≤
-1.8V
CIRCUIT OF FIGURE 3a
V
OUT
≤
-1.8V
CIRCUIT OF FIGURE 3b
0
4
8
12
16
20
24
2.0
3.0
2.5
3.5
4.0
4.5
5.0
5.5
6.0
MAXIMUM NEGOUT CURRENT
vs. INPUT VOLTAGE
MAX881R TOC05
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
V
NEGOUT
= 0.9 x V
NEGOUT(NO LOAD)
CIRCUIT OF FIGURE 3b
CIRCUIT OF FIGURE 3a
300
400
500
600
700
800
900
2.0
3.0
2.5
3.5
4.0
4.5
5.0
5.5
6.0
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX881R TOC06
INPUT VOLTAGE (V)
SUPPLY CURRENT (
µ
A)
300
400
500
600
700
800
900
-60
-20
-40
0
20
40
60
80
100
NO-LOAD SUPPLY CURRENT
vs. TEMPERATURE
MAX881R TOC07
TEMPERATURE (°C)
SUPPLY CURRENT (
µ
A)
V
IN
= 5.5V
V
IN
= 3.6V
V
IN
= 2.5V
100
300
200
500
400
700
600
800
2.0
3.0
3.5
2.5
4.0
4.5
5.0
5.5
6.0
START-UP TIME
vs. INPUT VOLTAGE
MAX881R TOC08
INPUT VOLTAGE (V)
START-UP TIME (
µ
s)
CIRCUIT OF FIGURE 3a
NO LOAD
SHDN TO POK DELAY
97
98
99
100
101
102
103
2.0
3.0
2.5
3.5
4.0
4.5
5.0
5.5
6.0
OSCILLATOR FREQUENCY
vs. INPUT VOLTAGE
MAX881R TOC09
INPUT VOLTAGE (V)
FREQUENCY (kHz)
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C