MAX840CSLASHD datasheet(4/10 Pages) MAXIM

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Low-Noise, Regulated, -2V GaAsFET Bias

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____________________________Typical Operating Characteristics (continued)

(Circuit of Figure 2a, VIN = 3.6V, TA = +25°C, unless otherwise noted.)

MAX840 OUTPUT NOISE AND RIPPLE

(C1 = C2 = C3 = 1

µF, C4 = 10µF)

VIN = 3.6V, VOUT = -2V, IOUT = 4mA, AC COUPLED

µs/div

VOUT

500

µV/div

MAX840 OUTPUT NOISE AND RIPPLE

(C1 = C2 = C3 = 0.22

µF, C4 = 4.7µF)

VIN = 3.6V, VOUT = -2V, IOUT = 4mA, AC COUPLED

µs/div

VOUT

1mV/div

MAX843/MAX844 OUTPUT NOISE AND RIPPLE

(C1 = C2 = C3 = 1

µF, C4 = 10µF)

VIN = 3.6V, VOUT = -2V, IOUT = 4mA, AC COUPLED

µs/div

VOUT

500

µV/div

MAX843/MAX844 OUTPUT NOISE AND RIPPLE

(C1 = C2 = C3 = 0.22

µF, C4 = 4.7µF)

VIN = 3.6V, VOUT = -2V, IOUT = 4mA, AC COUPLED

µs/div

VOUT

1mV/div

OSCILLATOR FREQUENCY

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

150

140

120

130

110

100

TA = +25°C, +85°C

TA = -40°C

SHDN = HIGH

MAX844

OSCILLATOR FREQUENCY vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

TA = +25°C, +85°C

TA = -40°C

SHDN = LOW

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