Maxim MAX4275BEESA, MAX4275BDEUA, MAX4275BDESA, MAX4275BCEUA, MAX4275BCESA Datasheet

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General Description

The MAX4174/MAX4175/MAX4274/MAX4275 Gain­Amp™ family combines a low-cost Rail-to-Rail®op amp
with precision internal gain-setting resistors and VCC/ 2
biasing. 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 only 300µA.
GainAmp amplifiers are optimally compensated for
each gain version, achieving exceptional GBW prod­ucts up to 23MHz (AV= +25V/V to +101V/V). High-volt­age fault protection withstands ±17V at either input
without excessive current draw.

Three versions are available in this amplifier family: single/
dual/quad open-loop, unity-gain stable (MAX4281/
MAX4282/MAX4284); single/dual fixed gain (MAX4174/
MAX4274); and single/dual fixed gain plus internal
VCC/ 2 bias at the noninverting input (MAX4175/
MAX4275), which simplifies input biasing in single-supply
designs. 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 outputs can swing rail-to-rail and drive a 1kΩ load
while maintaining excellent DC accuracy. The amplifier
is stable for capacitive loads up to 470pF.

Applications

Portable Instruments Smart-Card Readers
Instruments, Terminals, Infrared Receivers for

and Bar-Code Readers Remote Controls
Keyless Entry Low-Side Current-Sense
Photodiode Preamps

Amplifiers

Features

♦ GainAmp Family Provides Internal Precision

Gain-Setting Resistors in SOT23 (MAX4174/5)

♦ 0.1% Gain Accuracy (R

F/RG

) (MAX4174/5,

MAX4274/5)

♦ 54 Standard Gains Available (MAX4174/5,

MAX4274/5)

♦ Open-Loop Unity-Gain-Stable Op Amps

(MAX4281/2/4)

♦ Rail-to-Rail Outputs Drive 1kΩ Load
♦ Internal V

CC

/ 2 Biasing (MAX4175/MAX4275)

♦ +2.5V to +5.5V Single Supply
♦ 300µA Supply Current
♦ Up to 23MHz GBW Product
♦ Fault-Protected Inputs Withstand ±17V
♦ Stable with Capacitive Loads Up to 470pF with

No Isolation Resistor

MAX4174/5, MAX4274/5, MAX4281/2/4

†

SOT23, Rail-to-Rail, Fixed-Gain

GainAmps/Open-Loop Op Amps

________________________________________________________________

Maxim Integrated Products

1

19-1407; Rev 3; 8/99

PART*

MAX4174_EUK-T

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

5 SOT23-5

Ordering Information continued at end of data sheet.

*

Insert the desired gain code (from the Gain Selection Guide)
in the blank to complete the part number.

††

Refer to the Gain Selection Guide for a list of preferred gains
and SOT Top Marks.

Ordering Information

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

†

Patent pending

Pin Configurations

Typical Operating Circuit

MAX4175

INPUT

IN-

IN+

+5V

R

B

R

B

OUT

V

CC

V

CC

V

EE

V

EE

R

G

0.1µF

R

F

0.1µF

0.1µF

TOP VIEW

MAX4174

5

4

1

2

3

IN-

OUT

V

CC

V

EE

R

G

R

F

IN+

+

SOT23-5

Selector Guide appears at end of data sheet.

Pin Configurations continued at end of data sheet.

TOP

MARK

††

MAX4175_EUK-T

††

-40°C to +85°C 5 SOT23-5

MAX4174/5, MAX4274/5, MAX4281/2/4

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

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—MAX4174/MAX4175/MAX4274/MAX4275 Fixed-Gain
Amplifiers

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

IN+

= V

IN-

= VCC/ 2, RLto VCC/ 2, RL= open, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at V

CC

= +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 Voltage (VCCto VEE) ....................................-0.3V to +6V

Voltage Inputs (IN_)

MAX4281/4282/4284.....................(V

EE

- 0.3V) to (VCC+ 0.3V)

MAX4174/4175/4274/4275 (with respect to GND) ...........±17V

Output Short-Circuit Duration

(OUT_).....................................Continuous to Either V

EE

or V

CC

Continuous Power Dissipation (TA= +70°C)

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

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

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

14-Pin SO (derate 8.3mW/°C above +70°C)...............667mW

16-Pin QSOP (derate 8.3mW/°C above +70°C)..........667mW

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

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

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

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

RL= 1kΩ

RL= 100kΩ

MAX4174/MAX4274

Shorted to V

CC

Shorted to V

EE

Guaranteed by PSRR tests

VCC= 2.5V to 5.5V

IN_+, MAX4174/MAX4274 (Note 2)

MAX4175/MAX4275

MAX4175/MAX4275,
includes V

CC

/ 2 bias resistors

MAX4174/MAX4274

RL= 100kΩ

CONDITIONS

mV

60 150

Output Voltage Swing
(Note 4)

150 250

28

28

VOH/V

OL

mA

65

Short-Circuit Current

10

Ω0.02R

OUT

Closed-Loop Output
Impedance

dB70 90PSRR

Power-Supply Rejection
Ratio

kΩ75

Noninverting Input
Resistance

MΩ1000

330 510

300 460

V2.5 5.5V

CC

Supply Voltage Range

150

nA±0.05 ±10I

BIAS

Input Bias Current

µV/°CInput Offset Voltage Drift ±5

320 480

µA

355 530

I

CC

Supply Current
(per Amplifier)

±0.5 ±2.5

UNITSMIN TYP MAXSYMBOLPARAMETER

VCC= 3V
VCC= 5V
VCC= 3V
VCC= 5V

mVV

OS

Input Offset Voltage

AV< 25V/V

kΩ

40

Inverting Input Resistance

AV> 25V/V

VCC- V

OH

VOL- V

EE

VCC- V

OH

VOL- V

EE

MAX4175/MAX4275, VIN+ = VIN- V

V

CC

/ 2 VCC/ 2

- 0.25 + 0.25

IN_+ Bias Voltage

Guaranteed by functional test (Note 3) VV

EE

VCC- 1.2IN_+ Input Voltage Range

Guaranteed by functional test VV

EE

V

CC

IN_- Input Voltage Range

MAX4174/5, MAX4274/5, MAX4281/2/4

SOT23, Rail-to-Rail, Fixed-Gain

GainAmps/Open-Loop Op Amps

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX4174/MAX4175/MAX4274/MAX4275 Fixed-Gain
Amplifiers (continued)

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

IN+

= V

IN-

= VCC/ 2, RLto VCC/ 2, RL= open, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

Gain = +5V/V

Gain = +3V/V

Gain = +1.25V/V

No sustained oscillations

f = 10kHz (Note 5)

Output settling to 1%

CONDITIONS

970

970

1700

pF470C

LOAD

Capacitive Load Stability

nV/√Hz

90e

n

Input Noise Voltage Density

ms1Power-Up Time

UNITSMIN TYP MAXSYMBOLPARAMETER

VCC= 5V, V

OUT

= 4V step V/µs0.7SRSlew Rate

Gain = +51V/V

Gain = +25V/V

Gain = +10V/V

kHz

330

BW

-3dB

-3dB Bandwidth

590

640

f = 10kHz

fA/√Hz

4i

n

Input Noise Current Density

VCC= 5V, V

OUT

= 4V step µs7

Settling Time to Within

0.01%

(V

EE

+ 25mV) < V

OUT

< (VCC- 25mV),

R

L

= 100kΩ (Note 6)

%0.1 0.5DC Gain Accuracy

ELECTRICAL CHARACTERISTICS—MAX4281/MAX4282/MAX4284 Open-Loop Op Amps

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

IN+

= V

IN-

= VCC/ 2, RLto VCC/ 2, RL= open, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at V

CC

= +5V and TA= +25°C.) (Note 1)

Guaranteed by CMRR test VV

EE

- 0.15 VCC- 1.2

Guaranteed by PSRR tests

CMVR

Common-Mode Input
Voltage Range

Differential or common mode

CONDITIONS

R

IN

Input Resistance MΩ1000

V2.5 5.5V

CC

Supply Voltage Range

±10 ±1000

nA±0.05 ±10I

BIAS

Input Bias Current

µV/°CInput Offset Voltage Drift ±5

UNITSMIN TYP MAXSYMBOLPARAMETER

pAI

OS

Input Offset Current

V

CC

= 3V µA

290 450

I

CC

Supply Current
(per Amplifier)

RL= 100kΩ

mV±0.5 ±2V

OS

Input Offset Voltage

V

CC

= 5V µA320 500

C

IN

Input Capacitance pF2.5

VEE- 0.15V ≤ VCM≤ VCC- 1.2V dB60 90CMRR

Common-Mode Rejection
Ratio

VCC= 2.5V to 5.5V dB70 90PSRR

Power-Supply Rejection
Ratio

AV= 1V/V Ω0.02R

OUT

Closed-Loop Output
Impedance

Typical Operating Characteristics

(VCC= +5V, RL = 100kΩ to VCC/ 2, small-signal V

OUT

= 100mVp-p, large-signal V

OUT

= 1Vp-p, TA= +25°C, unless otherwise noted.)

MAX4174/5, MAX4274/5, MAX4281/2/4

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

4 _______________________________________________________________________________________

Note 1: MAX4174/MAX4175/MAX4281 and MAX4274/MAX4275/MAX4282 and MAX4284 are 100% production tested at

T

A

= +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 GainAmp.

Note 4: For AV= -0.5V/V and AV= -0.25V/V, the output voltage swing is limited by the input voltage range.
Note 5: Includes noise from on-chip resistors.
Note 6: The gain accuracy test is performed with the GainAmp in noninverting configuration. The output voltage swing is limited 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.

4

-6
1k 100k 1M10k 10M

LARGE-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC01

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +2.25V/V

AV = +1.25V/V

4

-6
1k 100k 1M10k 10M

LARGE-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC02

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +4V/V

AV = +2.5V/V

4

-6
1k 100k 1M10k 10M

LARGE-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC03

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +9V/V

AV = +5V/V

Shorted to V

EE

MHz2

No sustained oscillations, AV= 1V/V

f = 10kHz

VCC= 5V, V

OUT

= 4V step

GBW

RL= 100kΩ

VCC= 5V, V

OUT

= 4V step

µs

VEE+ 0.05V < V

OUT

< V

CC

- 0.1V, RL= 100kΩ

mA

Gain Bandwidth Product

V/µs

RL= 1kΩ

10

CONDITIONS

0.7
7

SRSlew Rate

Settling Time to within 0.01%

Short-Circuit Current

pF470C

LOAD

Capacitive Load Stability

nV/√Hz

60e

n

Input Noise Voltage Density

Shorted to V

CC

mA65

VEE+ 0.25V < V

OUT

< V

CC

- 0.3V, RL= 1kΩ

160 250

dB

60 100

80 100

28

mV

28

VOH/V

OL

Output Voltage Swing

dB

A

VOL

Large-Signal Voltage Gain

90 120

UNITSMIN TYP MAXSYMBOLPARAMETER

ELECTRICAL CHARACTERISTICS—MAX4281/MAX4282/MAX4284 Open-Loop Op Amps
(continued)

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

IN+

= V

IN-

= VCC/ 2, RLto VCC/ 2, RL= open, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at V

CC

= +5V and TA= +25°C.) (Note 1)

VCC- V

OH

VOL- V

EE

VCC- V

OH

VOL- V

EE

f = 10kHz

fA/√Hz

1.8i

n

Input Noise Current Density

Output settling to 1% ms1Power-Up Time

MAX4174/5, MAX4274/5, MAX4281/2/4

SOT23, Rail-to-Rail, Fixed-Gain

GainAmps/Open-Loop Op Amps

_______________________________________________________________________________________

5

Typical Operating Characteristics (continued)

(VCC= +5V, RL = 100kΩ to VCC/ 2, small-signal V

OUT

= 100mVp-p, large-signal V

OUT

= 1Vp-p, TA= +25°C, unless otherwise noted.)

4

-6
1k 100k 1M10k 10M

LARGE-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC04

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +21V/V

AV = +10V/V

4

-6
1k 100k 1M10k 10M

LARGE-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC05

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +50V/V

AV = +25V/V

4

-6
1k 100k 1M10k 10M

LARGE-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC06

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +100V/V

AV = +51V/V

4

-6
1k 100k 1M10k 10M

SMALL-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC07

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +2.25V/V

AV = +1.25V/V

4

-6
1k 100k 1M10k 10M

SMALL-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC08

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +4V/V

AV = +2.5V/V

4

-6
1k 100k 1M10k 10M

SMALL-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC09

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +9V/V

AV = +5V/V

MAX4174/MAX4175

4

-6
1k 100k 1M10k 10M

SMALL-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC10

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +21V/V

AV = +10V/V

4

-6
1k 100k 1M10k 10M

SMALL-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC11

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +50V/V

AV = +25V/V

4

-6
1k 100k 1M10k 10M

SMALL-SIGNAL GAIN

vs. FREQUENCY

MAX4174 TOC12

FREQUENCY (Hz)

NORMALIZED GAIN (dB)

-5

-4

-3

-2

-1

0

1

2

3

AV = +100V/V

AV = +51V/V

MAX4174/5, MAX4274/5, MAX4281/2/4

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

6 _______________________________________________________________________________________

1k 10k 100k 1M

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

MAX4174 TOC13

FREQUENCY (Hz)

THD (dB)

0

-120

-100

-80

-60

-40

-20

AV = +3V/V

AV = +10V/V

V

OUT

= 1Vp-p

AV = +1.25V/V

1k 10k 100k 1M

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

MAX4174 TOC14

FREQUENCY (Hz)

THD (dB)

0

-120

-100

-80

-60

-40

-20

AV = +25V/V

AV = +51V/V

V

OUT

= 1Vp-p

-120

-90

-100

-110

-80

-70

-60

0 2.01.50.5 1.0 2.5 3.0 3.5 4.0 4.5 5.0

TOTAL HARMONIC DISTORTION

vs. OUTPUT VOLTAGE SWING

MAX4174 TOC15

VOLTAGE SWING (Vp-p)

THD (dB)

AV = +1.25V/V

AV = +3V/V

AV = +10V/V

f = 10kHz

Typical Operating Characteristics (continued)

(VCC= +5V, RL = 100kΩ to VCC/ 2, small-signal V

OUT

= 100mVp-p, large-signal V

OUT

= 1Vp-p, TA= +25°C, unless otherwise noted.)

MAX4174/MAX4175

-120

-90

-100

-110

-80

-70

-60

0 2.01.50.5 1.0 2.5 3.0 3.5 4.0 4.5 5.0

TOTAL HARMONIC DISTORTION

vs. OUTPUT VOLTAGE SWING

MAX4174 TOC16

VOLTAGE SWING (Vp-p)

THD (dB)

AV = +25V/V

AV = +51V/V

f = 10kHz

1 10 100 1k 10k 100k

VOLTAGE NOISE DENSITY vs. FREQUENCY

(A

V

= +1.25, +3, +10)

MAX4174/5 toc 17

FREQUENCY (Hz)

1000

10

100

AV = +10V/V

AV = +3V/V

AV = +1.25V/V

VOLTAGE NOISE DENSITY (nV/√Hz)

1 10 100 1k 10k 100k

VOLTAGE NOISE DENSITY vs. FREQUENCY

(A

V

= +25, +51)

MAX4174/5 toc 18

FREQUENCY (Hz)

1000

10

100

AV = +25V/V

AV = +51V/V

VOLTAGE NOISE DENSITY (nV/√Hz)

INCLUDES RESISTOR NOISE

1 10 100 1k 10k 100k

CURRENT NOISE DENSITY vs.

FREQUENCY

MAX4174/5 toc19

FREQUENCY (Hz)

10

1

CURRENT NOISE DENSITY (fA/√Hz)