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
____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 2a, VIN = 3.6V, TA = +25°C, unless otherwise noted.)
150
140
130
120
110
100
90
80
70
2
OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
TA = +25°C, +85°C
TA = -40°C
SHDN = HIGH
3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
MAX840 OUTPUT NOISE AND RIPPLE
(C1 = C2 = C3 = 1µF, C4 = 10µF)
MAX844
OSCILLATOR FREQUENCY vs. SUPPLY VOLTAGE
31
29
TA = +25°C, +85°C
27
25
TA = -40°C
23
21
19
17
SHDN = LOW
15
2 3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
MAX840 OUTPUT NOISE AND RIPPLE
(C1 = C2 = C3 = 0.22µF, C4 = 4.7µF)
VOUT
500µV/div
10µs/div
VIN = 3.6V, VOUT = -2V, IOUT = 4mA, AC COUPLED
MAX843/MAX844 OUTPUT NOISE AND RIPPLE
(C1 = C2 = C3 = 1µF, C4 = 10µF)
VOUT
1mV/div
10µs/div
VIN = 3.6V, VOUT = -2V, IOUT = 4mA, AC COUPLED
MAX843/MAX844 OUTPUT NOISE AND RIPPLE
(C1 = C2 = C3 = 0.22µF, C4 = 4.7µF)
VOUT
500µV/div
VOUT
1mV/div
10µs/div
VIN = 3.6V, VOUT = -2V, IOUT = 4mA, AC COUPLED
10µs/div
VIN = 3.6V, VOUT = -2V, IOUT = 4mA, AC COUPLED
4 _______________________________________________________________________________________
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