MAX881REUB Datasheet Download

Part No.:
MAX881REUB
Download:
Download Datasheet
Description:
[Low-Noise Bias Supply in レMAX with Power-OK for GaAsFET PA]
File Size:
113 K
Page:
8 Pages
Logo:
Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
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Low-Noise Bias Supply in µMAX
with Power-OK for GaAsFET PA
MAX881R
Typical Operating Characteristics (continued)
(
Circuit of Figure 3, V
IN
= 3.6V, T
A
= +25°C, unless otherwise noted.
)
START-UP FROM SHUTDOWN
(NO LOAD)
MAX881R-TOC10
OUTPUT NOISE AND RIPPLE
(CIRCUIT OF FIGURE 3a)
MAX881R-TOC11
OUTPUT NOISE AND RIPPLE
(CIRCUIT OF FIGURE 3b)
MAX881R-TOC12
SHDN
+5V
0
V
IN
= 3.6V
V
OUT
= -2V
I
OUT
= 2.5mA
R
L
= 500Ω
V
OUT
= 0
V
IN
= 0
1mV/div
AC COUPLED
V
OUT
= -2V
V
IN
= 3.6V
1mV/div
AC COUPLED
NOISE FLOOR
V
OUT
0
-2V
POK
V
IN
= 3.6V
CIRCUIT OF FIGURE 3b
100µs/div
V
IN
0
V
OUT
1mV/div
AC COUPLED
OUTPUT NOISE
5µs/div
10µs/div
OUTPUT NOISE SPECTRUM
(CIRCUIT OF FIGURE 3a)
MAX881R TOC13
OUTPUT NOISE SPECTRUM
(CIRCUIT OF FIGURE 3b)
50
40
30
NOISE (dBµV)
20
10
0
-10
-20
-30
-40
V
IN
= 3.6V
V
OUT
= -2V
I
OUT
= 4mA
MAX881R TOC14
60
50
40
30
NOISE (dBµV)
20
10
0
-10
-20
-30
-40
1
10
100
V
IN
= 3.6V
V
OUT
= -2V
I
OUT
= 2.5mA
60
1000
1
10
100
1000
FREQUENCY (kHz)
FREQUENCY (kHz)
LINE-TRANSIENT RESPONSE
MAX881R-TOC15
LOAD-TRANSIENT RESPONSE
MAX881R-TOC16
4mA
3.3V
V
IN
2.7V
I
OUT
400µA
V
OUT
I
LOAD
= 4mA
V
OUT
= -2V
CIRCUIT OF FIGURE 3b
2ms/div
10mV/
div
V
OUT
V
IN
= 3.6V
V
OUT
= -2V
CIRCUIT OF FIGURE 3b
100µs/div
10mV/
div
4
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