MAX4038EBL-T(2004) Просмотр технического описания (PDF) - Maxim Integrated

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MAX4038EBL-T
(Rev.:2004)

Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference

Maxim Integrated 

Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps

with +1.2V Buffered Reference

Pin Description

MAX4036

1

2

3

4

5

—

—

—

—

—

—

—

—

PIN

MAX4038

MAX4037

µMAX/TDFN UCSP

3

—

—

2

4

A2

4

—

—

1

—

—

6

8

C2

5

—

—

—

1

C1

—

2

B1

—

3

A1

—

5

A3

—

6

B3

—

7

C3

—

—

B2

MAX4039

µMAX/TDFN UCSP

—

—

5

A2

—

—

—

—

10

C2

6

B2

1

C1

2

B1

3

A1

7

A3

8

B3

9

C3

4

—

—

—

—

—

—

—

NAME

FUNCTION

IN+

VSS

IN-

OUT

VDD

REF

OUTA

INA-

INA+

INB+

INB-

OUTB

N.C.

EP

(TDFN only)

Noninverting Amplifier Input

Negative Power-Supply Voltage

Inverting Amplifier Input

Amplifier Output

Positive Power-Supply Voltage

Reference Voltage Output

Amplifier Output (Channel A)

Inverting Amplifier Input (Channel A)

Noninverting Amplifier Input (Channel A)

Noninverting Amplifier Input (Channel B)

Inverting Amplifier Input (Channel B)

Amplifier Output (Channel B)

No Connection. Not internally connected.

Exposed Paddle. Solder EP to VSS or leave

unconnected (TDFN packages only).

Detailed Description

The MAX4036–MAX4039 consume an ultra-low supply

current and have rail-to-rail output stages specifically

designed for low-voltage operation. The input common-

mode voltage range extends from VDD - 0.4V to VSS,

although full rail-to-rail input range is possible with

degraded performance when operating from a supply

voltage above 3.0V. The input offset voltage is typically

200µV. Low-operating supply voltage, low supply current,

and rail-to-rail outputs make the MAX4036–MAX4039 an

excellent choice for precision or general-purpose low-

voltage, battery-powered systems.

Rail-to-Rail Outputs

The MAX4036–MAX4039 output stages can drive a 5kΩ

load and still swing to within 40mV of the rails. Figure 1

shows the output voltage swing of the MAX4036–

MAX4039 configured as a unity-gain buffer, powered

from a single 2.4V supply. The output for this setup typi-

cally swings from 5mV to VDD - 5mV with a 100kΩ load.

VIN_+

AV = 1V/V

1.5V

VOUT+

1.5V

2ms/div

1V/div

Figure 1. Rail-to-Rail Input/Output Voltage Range

10 ______________________________________________________________________________________

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