MAX9939 데이터 시트보기 (PDF) - Maxim Integrated

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MAX9939

SPI Programmable-Gain Amplifier with Input VOS Trim and Output Op Amp

Maxim Integrated 

SPI Programmable-Gain Amplifier

with Input VOS Trim and Output Op Amp

Typical Operating Characteristics (continued)

(VCC = 5V, VGND = 0V, VIN+ = VIN- = 0V, Gain = 10V/V, ROUTA = ROUTB = 1kΩ to VCC/2, TA = +25°C, unless otherwise noted.)

OUTPUT IMPEDANCE vs. FREQUENCY

100

AMPLIFIER B

10

1

0.1

0.01

0.001

0.01

0.1

1

10

FREQUENCY (MHz)

1% SETTLING TIME vs. GAIN (PGA)

1000

900

VOUT = 2VP-P

800

700

600

500

400

300

200

100

0

0 20 40 60 80 100 120 140 160

GAIN (V/V)

RECOVERY FROM INPUT OVERLOAD

(PGA, GAIN = 1V/V)

MAX9939 toc15

INA+ - INA-

2V/div

RECOVERY FROM INPUT OVERLOAD

(PGA, GAIN = 157V/V)

MAX9939 toc16

INA+ - INA-

2mV/div

OUTA

1V/div

OUTA

1V/div

1µs/div

RECOVERY FROM INPUT OVERLOAD

(OUTPUT AMPLIFIER)

MAX9939 toc17

IN

2V/div

400ns/div

GAIN ADJUST RESPONSE

MAX9939 toc18

INA+ - INA-

2mV/div

OUTB

2V/div

GAIN = 10V/V

GAIN = 1V/V

GAIN = 40V/V

OUTA

1V/div

1µs/div

GAIN = 157V/V

200µs/div

6 _______________________________________________________________________________________

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