MAX4481MXT Просмотр технического описания (PDF) - Maxim Integrated

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MAX4481MXT

(MAX4480–MAX4483) Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown

Maxim Integrated 

MAX4480–MAX4483

Single/Dual/Quad, Low-Cost, Single-Supply,

Rail-to-Rail Op Amps with Shutdown

MAX4480

1

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2

3

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4

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5

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PIN

MAX4481 MAX4482

1

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3

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5

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2

4

3

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2

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6

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4

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1

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7

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8

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MAX4483

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3

5

10

12

11

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2

6

9

13

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1

7

8

14

4

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NAME

IN+

INA+

INB+

INC+

IND+

VSS

IN-

INA-

INB-

INC-

IND-

OUT

OUTA

OUTB

OUTC

OUTD

VDD

SHDN

Pin Description

FUNCTION

Noninverting Amplifier Input

Noninverting Amplifier Input A

Noninverting Amplifier Input B

Noninverting Amplifier Input C

Noninverting Amplifier Input D

Negative Supply. Connect to ground for single-supply

operation. Use a 0.01µF bypass capacitor to GND.

Inverting Amplifier Input

Inverting Amplifier Input A

Inverting Amplifier Input B

Inverting Amplifier Input C

Inverting Amplifier Input D

Amplifier Output

Amplifier Output A

Amplifier Output B

Amplifier Output C

Amplifier Output D

Positive Supply. Use a 0.01µF bypass capacitor to GND.

Active-Low Shutdown Input. Connect to VDD for

normal operation. Do not leave floating.

Detailed Description

Rail-to-Rail Output Stage

The MAX4480–MAX4483 can drive a 5kΩ load and still

typically swing within 80mV of the supply rails. Figure 1

shows the MAX4480 output voltage swing configured

with AV = +10V/V.

1V/div

Driving Capacitive Loads

Driving a capacitive load can cause instability in many

op amps, especially those with low quiescent current.

The MAX4480–MAX4483 are unity-gain stable for a

range of capacitive loads to above 400pF. Figure 2

shows the MAX4480 response with an excessive

capacitive load. Adding a series resistor between the

output and the load capacitor (Figure 3) improves the

100μs/div

Figure 1. Rail-to-Rail Output Operation

Maxim Integrated

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