Rainbow Electronics MAX853 - Manual (Page 4)

MAX850–MAX853
Low-Noise, Regulated, Negative
Charge-Pump Power Supplies for GaAsFET Bias
4 ______________________________________________________________________________________
V IN = 6.0V, V OUT = -4.1V, I OUT = 5mA, AC COUPLED
MAX850–MAX852
OUTPUT NOISE AND RIPPLE
V OUT
500 µ V/div
10 µ s/div
_____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 2a, V IN = 6V, T A = +25°C, unless otherwise noted.)
V IN = 6.0V, V OUT = -4.1V, I OUT = 5mA, AC COUPLED
MAX853
OUTPUT NOISE AND RIPPLE
V OUT
500 µ V/div
10 µ s/div
MAX850–MAX852
NOISE SPECTRUM
70
60
50
40
30
20
10
0
-10
-20
-30
NOISE (dB
µ V)
0.1 1000 100 10 1.0
FREQUENCY (kHz)
MAX853
NOISE SPECTRUM
70
60
50
40
30
20
10
0
-10
-20
-30
NOISE (dB
µ V)
0.1 1000 100 10 1.0
FREQUENCY (kHz)
NOTE: dBµV = 20 log V OUT
1µV