Maxim MAX4078ESD, MAX4077EUA, MAX4077ESA, MAX4076EUK-T, MAX4074AJEUK-T Datasheet

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General Description

The MAX4074–MAX4078 GainAmp™ op amp family combines low-cost Rail-to-Rail®op amps with precision internal gain-setting resistors. Factory-trimmed on-chip resistors decrease design size, cost, and layout, and provide 0.1% gain accuracy. Fixed inverting gains from

-0.25V/V to -100V/V or noninverting gains from +1.25V/V to +101V/V are available. These devices operate from a single +2.5V to +5.5V supply and consume just 34µA. GainAmp amplifiers are optimally compensated for each gain version, achieving gain bandwidth (GBW) products up to 4MHz (AV= +25V/V to +101V/V). High-voltage fault protection withstands ±17V at either input without damage or excessive current draw (MAX4074/MAX4075 only).

Two versions are available in this amplifier family. The MAX4076/MAX4077/MAX4078 are single/dual/quad open-loop, unity-gain-stable op amps, and the MAX4074/MAX4075 are single/dual fixed-gain op amps. The input common-mode voltage range of the open-loop amplifiers extends from 150mV below the negative supply to within 1.2V of the positive supply. The GainAmp outputs can swing rail-to-rail and drive a 1kΩ load while maintaining excellent DC accuracy (MAX4074/MAX4075 only). The amplifiers are stable for capacitive loads up to 100pF.

For space-critical applications, the MAX4074/MAX4076 are available in space-saving SOT23-5 packages.

Applications

Portable Battery-Powered Equipment

Instruments, Terminals, and Bar-Code Readers

Keyless Entry

Photodiode Preamps

Smart-Card Readers

Infrared Receivers for Remote Controls

Low-Side Current-Sense Amplifiers

Features

♦ Internal Gain-Setting Resistors in SOT23

Packages (MAX4074)

♦ 0.1% Gain Accuracy (R

F/RG

) (MAX4074/75)

♦ 54 Standard Gains Available (MAX4074/75)

♦ Open-Loop, Unity-Gain-Stable Op Amps

(MAX4076/77/78)

♦ Rail-to-Rail Outputs Drive 1kΩ Load (MAX4074/75)

♦ +2.5V to +5.5V Single Supply

♦ 34µA Supply Current (MAX4074/75)

♦ Up to 4MHz GBW Product

♦ Fault-Protected Inputs Withstand ±17V

(MAX4074/75)

♦ 200pA max Input Bias Current (MAX4076/77/78)

♦ Stable with Capacitive Loads up to 100pF

with No Isolation Resistor

MAX4074–MAX4078

†

Micropower, SOT23, Rail-to-Rail,

Fixed-Gain, GainAmp/Open-Loop Op Amps

________________________________________________________________ Maxim Integrated Products 1

TOP VIEW

MAX4074

IN-

OUT

IN+

SOT23-5

19-1526; Rev 1; 10/99

Pin Configurations/

Functional Diagrams

†

Patent pending. GainAmp is a trademark of Maxim Integrated Products. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

Ordering Information

Pin Configurations continued at end of data sheet.

Ordering Information continued at end of data sheet.

Note: Insert the desired gain code in the blank to complete the

part number (see the Gain Selector Guide). **See the Gain Selector Guide for a list of preferred gains and top marks.

8 SO

5 SOT23-5

PIN-

PACKAGE

TEMP. RANGE

-40°C to +70°C

-40°C to +70°CMAX4074__ESA

MAX4074__EUK-T

PART

—

TOP

MARK

Typical Operating Circuit appears at end of data sheet.

Gain Selector Guide appears at end of data sheet.

MAX4074–MAX4078

Micropower, SOT23, Rail-to-Rail, Fixed-Gain, GainAmp/Open-Loop Op Amps

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—MAX4074/MAX4075

(VCC= +2.5V to +5.5V, VEE= 0, V

IN+

= V

IN-

= VCC/2, RL= ∞ to VCC/2, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at V

= +5V and TA= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Supply Voltages (VCCto VEE) ..................................-0.3V to +6V

Voltage Inputs (IN_)

MAX4076/MAX4077/MAX4078 .....(V

+ 0.3V) to (VEE- 0.3V)

MAX4074/MAX4075..........................................................±17V

Output Short-Circuit Duration to Either Supply (OUT_). . . . Continuous

Continuous Power Dissipation (T

= +70°C)

5-Pin SOT23 (derate 7.1mW/°C above +70°C) ............571mW

14-Pin TSSOP (derate 6.3mW/°C above +70°C) ..........500mW

8-Pin µMAX (derate 4.1mW/°C above +70°C) ..............330mW

8-Pin SO (derate 5.88mW/°C above +70°C).................471mW

14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10sec) .............................+300°C

Supply Current (per amplifier) I

34 50

µA

VCC= 3V

PARAMETER SYMBOL MIN TYP MAX UNITS

Inverting Input Resistance R

IN_

kΩ

VCC- V

300

Input Bias Current (Note 2) I

IN+_

0.8 1000 pA

Input Offset Voltage Drift 0.3 µV/°C

Noninverting Input Resistance R

IN_+

1000 MΩ

Negative Input Voltage Range IN_- ±1 5 V

Power-Supply Rejection Ratio PSRR 70 96 dB

Supply Voltage Range V

2.5 5.5 V

300 1000

37 55

Input Offset Voltage V

0.2 3.5 mV

Closed-Loop Output Impedance R

OUT

0.2 Ω

VCC- V

Output Short-Circuit Current

-22

0.5 2.5

VOL- V

Output Voltage Swing (Note 4)

100 600

RL= 1kΩ

VCC- V

25 150

VOL- V

Positive Input Voltage Range IN_+

11 80

RL= 10kΩ

VOL- V

CONDITIONS

AV≥ +25V/V

Shorted to V

AV< +25V/V

Shorted to V

VEE-V

0.15 1.2

Guaranteed by functional test (Note 3)

VCC= 2.5V to 5.5V

VGuaranteed by functional test (Note 3)

0.4 2.5

Guaranteed by PSRR test

VCC= 5V

RL= 1MΩ

MAX4074–MAX4078

Micropower, SOT23, Rail-to-Rail,

Fixed-Gain, GainAmp/Open-Loop Op Amps

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX4076/MAX4077/MAX4078

(VCC= +2.5V to +5.5V, VEE= 0, V

IN+

= V

IN-

= VCC/2, RL= ∞ to VCC/2, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at V

= +5V and TA= +25°C.) (Note 1)

ELECTRICAL CHARACTERISTICS—MAX4074/MAX4075 (continued)

(VCC= +2.5V to +5.5V, VEE= 0, V

IN+

= V

IN-

= VCC/2, RL= ∞ to VCC/2, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at V

= +5V and TA= +25°C.) (Note 1)

-3dB Bandwidth BW (-3dB)

120

kHz

AV= +3V/V

AV= +5V/V

AV= +10V/V

AV= +25V/V

200AV= +1.25V/V

Input Noise Current Density 500

fA/√Hz

Capacitive Load Stability C

LOAD

500 pF

DC Gain Accuracy

0.01 1.0 %

f = 5kHz

No sustained oscillations

PARAMETER SYMBOL MIN TYP MAX UNITS

Power-Up Time 9 ms

Slew Rate SR 100 V/ms

Settling Time (to 0.01%) 60 µs

Input Voltage Noise Density e

150

nV/√Hz

CONDITIONS

Output settling to 1%

OUT

= 4V step

OUT

= 4V step

f = 5kHz (Note 5)

1.2

TA= +25°C

(VEE+ 25mV) < V

OUT

< (VCC- 25mV), RL= 1MΩ (Note 6)

TA= T

MIN

to T

MAX

Supply Current (per amplifier) I

40 55

µA

VCC= 3V

PARAMETER SYMBOL MIN TYP MAX UNITS

Input Bias Current (Note 2) I

IBIAS

1200pA

Input Offset Voltage Drift 1.5µV µV/°C

Power-Supply Rejection Ratio PSRR 70 95 dB

Supply Voltage Range V

2.5 5.5 V

80 93

45 60

Input Offset Voltage V

1.2 3.5mV mV

Closed-Loop Output Impedance R

OUT

0.2 Ω

4.5

Output Short-Circuit Current

80 117

Large-Signal Voltage Gain A

VOL

0.25V < V

OUT

< (VCC- 0.3V), RL= 5kΩ

80 95

Common-Mode Input Voltage Range

0.25V < V

OUT

< (VCC- 0.3V), RL= 10kΩ

CONDITIONS

AV= +1V/V

Shorted to V

0.15 V

CC -

1.2

VCC= 2.5V to 5.5V

VGuaranteed by CMRR

Guaranteed by PSRR test

VCC= 5V

0.05V < V

OUT

< (VCC- 0.1V), RL= 1MΩ

RL= 1MΩ

Input Offset Current I

±0.4 pA

Common-Mode Rejection Ratio CMRR 70 95 dB(VCC- 1.2V) ≥ VCM≥ -0.15V

MAX4074–MAX4078

Micropower, SOT23, Rail-to-Rail, Fixed-Gain, GainAmp/Open-Loop Op Amps

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX4076/MAX4077/MAX4078 (continued)

(VCC= +2.5V to +5.5V, VEE= 0, V

IN+

= V

IN-

= VCC/2, RL= ∞ to VCC/2, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at V

= +5V and TA= +25°C.) (Note 1)

RL= 1MΩ

0.22 2.5

CONDITIONS

VOL- V

RL= 10kΩ

750VOL- V

12 50VCC- V

RL= 5kΩ

100 100

VOH/V

Output Voltage Swing

VOL- V

0.23 2.5

VCC- V

100 100VCC- V

kHzGBWGain-Bandwidth Product

UNITSMIN TYP MAXSYMBOLPARAMETER

230

OUT

= 4V step V/msSRSlew Rate 90

OUT

= 4V step µsSettling Time (to 0.01%) 69

f = 5kHz

nV/√Hz

Input Voltage Noise Density 110

f = 5kHz

fA/√Hz

Input Noise Current Density 1.1

No sustained oscillations, AV= +1V/V pFC

LOAD

Capacitive Load Stability 100

Note 1: All devices are 100% production tested at TA= +25°C. All temperature limits are guaranteed by design. Note 2: Guaranteed by design. Note 3: The input common-mode range for IN_+ is guaranteed by a functional test. A similar test is done on the IN_- input. See the

Applications Information section for more information on the input voltage range of the GainAmps.

Note 4: For A

= -0.5V/V and AV= -0.25V/V, the output voltage swing may be limited by the input voltage range.

Note 5: Includes noise from on-chip resistors. Note 6: The gain accuracy test is performed with the GainAmps in the noninverting configuration. The output voltage swing is limit-

ed by the input voltage range for certain gains and supply voltage conditions. For situations where the output voltage swing is limited by the valid input range, the output limits are adjusted accordingly.

Output settling to 1% msPower-Up Time 10

-6 1k 1M100k10k

SMALL-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 tocc1-2

FREQUENCY (Hz)

GAIN (dB)

AV = +2.25V/V

AV = +1.25V/V

OUT

= 100mVp-p

-6 1k 1M10k 100k

SMALL-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 tocc3-4

FREQUENCY (Hz)

GAIN (dB)

AV = +4V/V

AV = +2.5V/V

OUT

= 100mVp-p

-6 1k 1M10k 100k

SMALL-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 tocc5-6

FREQUENCY (Hz)

GAIN (dB)

AV = +9V/V

AV = +5V/V

OUT

= 100mVp-p

Typical Operating Characteristics

(VCC= +5.0V, RL= 100kΩ to VCC/2, TA= +25°C, unless otherwise noted.)

MAX4074/MAX4075

MAX4074–MAX4078

Micropower, SOT23, Rail-to-Rail,

Fixed-Gain, GainAmp/Open-Loop Op Amps

_______________________________________________________________________________________ 5

-6 1k 1M100k10k

SMALL-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 toc04

FREQUENCY (Hz)

GAIN (dB)

AV = +21V/V

AV = +10V/V

OUT

= 100mVp-p

-6 1k 1M100k10k

SMALL-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 toc05

FREQUENCY (Hz)

GAIN (dB)

AV = +25V/V

AV = +50V/V

OUT

= 100mVp-p

-6 1k 1M100k10k

SMALL-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 toc06

FREQUENCY (Hz)

GAIN (dB)

AV = +51V/V

AV = +101V/V

OUT

= 100mVp-p

-6 1k 1M100k10k

LARGE-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 toc07

FREQUENCY (Hz)

GAIN (dB)

AV = +1.25V/V

AV = +2.25V/V

OUT

= 1Vp-p

-6 1k 1M100k10k

LARGE-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 toc08

FREQUENCY (Hz)

GAIN (dB)

AV = +2.5V/V

AV = +4V/V

OUT

= 1Vp-p

-6 1k 1M100k10k

LARGE-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 toc09

FREQUENCY (Hz)

GAIN (dB)

AV = +5V/V

AV = +9V/V

OUT

= 1Vp-p

Typical Operating Characteristics

(VCC= +5.0V, RL= 100kΩ to VCC/2, TA= +25°C, unless otherwise noted.)

MAX4074/MAX4075

-6 1k 1M100k10k

LARGE-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 toc10

FREQUENCY (Hz)

GAIN (dB)

AV = +10V/V

AV = +21V/V

OUT

= 1Vp-p

-6 1k 1M100k10k

LARGE-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 toc11

FREQUENCY (Hz)

GAIN (dB)

AV = +25V/V

AV = +50V/V

OUT

= 1Vp-p

-6 1k 1M100k10k

LARGE-SIGNAL GAIN vs. FREQUENCY

-3

-5

-1

-2

-4

MAX4074-8 toc12

FREQUENCY (Hz)

GAIN (dB)

AV = +51V/V

AV = +101V/V

OUT

= 1Vp-p

MAX4074–MAX4078

Micropower, SOT23, Rail-to-Rail, Fixed-Gain, GainAmp/Open-Loop Op Amps

6 _______________________________________________________________________________________

-10

-100 100 100k10k1k

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

-70

-90

-30

-50

-60

-80

-20

-40

MAX4074-8 toc25

FREQUENCY (Hz)

THD (dB)

AV = +1.25V/V

AV = +3V/V

OUT

= 1Vp-p

AV = +10V/V

-10

-100 100 100k10k1k

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

-70

-90

-30

-50

-60

-80

-20

-40

MAX4074-8 toc26

FREQUENCY (Hz)

THD (dB)

AV = +25V/V

AV = +51V/V

OUT

= 1Vp-p

-90

-70

-80

-50

-60

-30

-40

-20

0 2.01.0 3.0 4.00.5 2.51.5 3.5 4.5 5.0

TOTAL HARMONIC DISTORTION

vs. OUTPUT VOLTAGE SWING

MAX4074-8 toc27

VOLTAGE SWING (Vp-p)

THD (dB)

AV = +3V/V

AV = +10V/V

AV = +1.25V/V

f = 10kHz

-90

-70

-80

-50

-60

-30

-40

-20

0 2.01.0 3.0 4.00.5 2.51.5 3.5 4.5 5.0

TOTAL HARMONIC DISTORTION

vs. OUTPUT VOLTAGE SWING

MAX4074-8 toc28

VOLTAGE SWING (Vp-p)

THD (dB)

AV = +51V/V

AV = +25V/V

f = 10kHz

1000

1 1k 10k 100k10 100 1M 10M

VOLTAGE NOISE DENSITY

vs. FREQUENCY

100

MAX4074-8 toc29

FREQUENCY (Hz)

VOLTAGE NOISE (nV/√Hz)

AV = +3V/V

AV = +1.25V/V

AV = +10V/V

1000

1 1k 10k 100k10 100 1M 10M

VOLTAGE NOISE DENSITY

vs. FREQUENCY

100

MAX4074-8 toc30

FREQUENCY (Hz)

AV = +25V/V

AV = +51V/V

VOLTAGE NOISE (nV/√Hz)

Typical Operating Characteristics (continued)

(VCC= +5.0V, RL= 100kΩ to VCC/2, TA= +25°C, unless otherwise noted.)

MAX4074/MAX4075

0.1 1 1k 10k 100k10 100 10M1M

CURRENT NOISE DENSITY

vs. FREQUENCY

MAX4074 TOC31

FREQUENCY (Hz)

CURRENT NOISE DENSITY (fA/√Hz)

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