MAX840 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX840 Datasheet PDF : 10 Pages
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Low-Noise, Regulated, -2V GaAsFET Bias
C1
1µF
C2
1µF
ON/OFF
1
C1+
VIN
8
IN
2
MAX840
6
C1-
OUT
3
NEGOUT
4
SHDN
GND
7
5
FB
C3
1µF
VOUT = -2V
(VGG of GaAsFET)
C4
10µF
C1
1µF
C2
1µF
ON/OFF
VIN
8
C3
IN
1µF
1 C1+
( ) 2
C1-
MAX840
OUT
6VOUT = (-0.5V)
1+ R2
R1
C4
3
NEGOUT
10µF
R2
100k
4
SHDN
5
FB
GND
R1
100k
7
Figure 2a. MAX840 Standard Application Circuit
Figure 2b. MAX840 Adjustable Configuration
C1
1µF
C2
1µF
ON/OFF
VIN
8
C3
1 C1+
IN
1µF
2
C1- MAX843
3
MAX844
NEGOUT
VOUT = -0.5V to -9.4V @ 4mA
OUT
6
C4
R2
10µF
100k
4
SHDN
5
CONT
GND
R1
7
100k
VCTRL (0V TO 10V)
C1
0.22µF
C2
0.22µF
1 C1+
VIN
8
IN
2
MAX840
6
C1-
OUT
3
NEGOUT
ON/OFF
4
SHDN
GND
7
5
FB
C3
0.22µF
VOUT = -2V
(VGG of GaAsFET)
C4
4.7µF
Figure 2c. MAX843/MAX844 Standard Application Circuit
Figure 2d. MAX840 Application Circuit Using Smaller Capacitors
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