MAX4402AUA(2019) Просмотр технического описания (PDF) - Maxim Integrated

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MAX4402AUA
(Rev.:2019)

Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown

Maxim Integrated 

MAX4400–MAX4403

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

Rail-to-Rail Op Amps with Shutdown

Pin Description

PIN

MAX4400 MAX4401 MAX4402

1

1

—

—

—

3

—

—

5

—

—

—

—

—

—

2

2

4

3

3

—

—

—

2

—

—

6

—

—

—

—

—

—

4

4

—

—

—

1

—

—

7

—

—

—

—

—

—

5

6

8

—

5

—

MAX4403

—

3

5

10

12

11

—

2

6

9

13

—

1

7

8

14

4

—

NAME

IN+

INA+

INB+

INC+

IND+

VSS

IN-

INA-

INB-

INC-

IND-

OUT

OUTA

OUTB

OUTC

OUTD

VDD

SHDN

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.

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

Active-Low Shutdown Input. Connect to VDD for normal

operation. Do not leave unconnected.

Detailed Description

Rail-to-Rail Output Stage

The MAX4400–MAX4403 can drive a 2kΩ load and still

typically swing within 55mV of the supply rails. Figure 1

shows the output voltage swing of the MAX4400 config-

ured with AV = +10V/V.

Driving Capacitive Loads

Driving a capacitive load can cause instability in many op

amps, especially those with low quiescent current. The

MAX4400–MAX4403 are unity-gain stable for a range

of capacitive loads to above 400pF. Figure 2 shows the

response of the MAX4400 with an excessive capacitive

load. Adding a series resistor between the output and the

load capacitor (Figure 3) improves the circuit’s response

by isolating the load capacitance from the op amp’s output.

1V/div

100µs/div

Figure 1. Rail-to-Rail Output Operation

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