Maxim MAX4334ESD, MAX4333EUB, MAX4333ESD, MAX4332ESA, MAX4331EUA Datasheet

General Description

The MAX4330–MAX4334 single/dual/quad op amps
combine a wide 3MHz bandwidth, low-power operation,
and excellent DC accuracy with Rail-to-Railinputs and
outputs. These devices require only 245µA per amplifier,
and operate from either a single +2.3V to +6.5V supply
or dual ±1.15V to ±3.25V supplies. The input common­mode voltage range extends 250mV beyond VEEand
VCC, and the outputs swing rail-to-rail. The MAX4331/
MAX4333 feature a shutdown mode in which the output
goes high impedance and the supply current decreases
to 9µA per amplifier.

Low-power operation combined with rail-to-rail input
common-mode range and output swing makes these
amplifiers ideal for portable/battery-powered equipment
and other low-voltage, single-supply applications.
Although the minimum operating voltage is specified at

2.3V, these devices typically operate down to 2.0V. Low
offset voltage and high speed make these amplifiers
excellent choices for signal-conditioning stages in pre­cision, low-voltage data-acquisition systems. The
MAX4330 is available in the space-saving 5-pin SOT23
package, and the MAX4331/MAX4333 are offered in
a µMAX package.

Applications

Portable/Battery-Powered Equipment
Data-Acquisition Systems
Signal Conditioning
Low-Power, Low-Voltage Applications

____________________________Features

♦ 3MHz Gain-Bandwidth Product
♦ 245µA Quiescent Current per Amplifier
♦ Available in Space-Saving SOT23-5 Package

(MAX4330)

♦ +2.3V to +6.5V Single-Supply Operation
♦ Rail-to-Rail Input Common-Mode Voltage Range
♦ Rail-to-Rail Output Voltage Swing
♦ 250µV Offset Voltage
♦ Low-Power, 9µA (per amp) Shutdown Mode

(MAX4331/MAX4333)

♦ No Phase Reversal for Overdriven Inputs
♦ Capable of Driving 2kΩ Loads
♦ Unity-Gain Stable

MAX4330–MAX4334

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

Rail-to-Rail I/O Op Amps with Shutdown

________________________________________________________________

Maxim Integrated Products

1

V

EE

IN-

IN+

1

5

V

CC

OUT

MAX4330

SOT23-5

TOP VIEW

2

3

4

Pin Configurations

19-1192; Rev 3; 2/98

PART

MAX4330EUK-T
MAX4331ESA

-40°C to +85°C

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

5 SOT23-5
8 SO

Ordering Information

PART

NO. OF AMPS

PER PACKAGE

Selector Guide

MAX4330 1 —

SHUTDOWN

MODE

5-pin SOT23

PIN-PACKAGE

MAX4331 1 8-pin SO/µMAXYes
MAX4332 2 8-pin SO—

MAX4333 2

10-pin µMAX,
14-pin SO

Yes

MAX4334 4 14-pin SO—

MAX4331EUA -40°C to +85°C 8 µMAX

SOT

TOP MARK

ABAJ

—
—

Pin Configurations continued at end of data sheet.

Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.

MAX4332ESA

-40°C to +85°C 8 SO —

MAX4333ESD

-40°C to +85°C 14 SO —
MAX4333EUB -40°C to +85°C 10 µMAX —
MAX4334ESD

-40°C to +85°C 14 SO —

For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone].
For small orders, phone [phone] ext. 3468.

MAX4330–MAX4334

Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= +2.3V to +6.5V, VEE= 0V, VCM= 0V, V

OUT

= (VCC/ 2), RLtied to (VCC/ 2), V

SHDN

≥ 2V, TA= +25°C, unless otherwise noted.)

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.....................................................7V

IN_+, IN_-, SHDN Voltage................(V

EE

- 0.3V) to (VCC+ 0.3V)

Output Short-Circuit Duration.................................... Continuous

(short to either supply)

Continuous Power Dissipation (T

A

= +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 4.10mW/°C above +70°C)............330mW

10-Pin µMAX (derate 5.60mW/°C above +70°C)..........444mW

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

Operating Temperature Ranges

MAX433_C/D .......................................................0°C to +70°C

MAX433_E_ _....................................................-40°C to +85°C

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

Storage Temperature Range.............................-65°C to +160°C

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

| V

IN

+ - VIN- | > 2.5V

| V

IN

+ - VIN- | < 1.4V

VEE< VCM< V

CC

CONDITIONS

kΩ2

R

IN(DIFF)

Differential Input Resistance

MΩ2.3

nA±1 ±12I

OS

Input Offset Current

mV

±0.25 ±0.9

±0.65 ±1.5

UNITSMIN TYP MAXSYMBOLPARAMETER

71 93

74 93

67 87

68 88

V

-0.25 VCC+

0.25

V

CM

Common-Mode Input
Voltage Range

V

SHDN

< 0.8V, V

OUT

= 0V to V

CC

µA±0.1 ±2I

OUT(SHDN)

Off-Leakage Current
in Shutdown

dB

69 92

CMRR

Common-Mode
Rejection Ratio

±0.65 ±1.5
±0.25 ±0.6V

OS

Input Offset Voltage

MAX433_EUA/EUB
MAX4330EUK
MAX4331ESA

MAX4332ESA/
MAX4333ESD

MAX4334ESD

-0.25V <
VCM<
(VCC+ 0.25V)

VCC=
5V

VCM=
VEEto V

CC

MAX433_EUA/EUB

MAX4331ESA

MAX4330EUK

VEE< VCM< V

CC

±25 ±65I

B

Input Bias Current

MAX4332ESA/MAX4333ESD

MAX433_EUA/EUB

69 90

71 90

64 82

65 84
MAX4330EUK
MAX4331ESA

MAX4332ESA/
MAX4333ESD

dB

66 89MAX4334ESD
MAX433_EUA/EUB

VCC= 2.3V to 6.5VPSSRPower-Supply Rejection Ratio

77 90

79 92

76 88

76 88
MAX4330EUK
MAX4331ESA

MAX4332ESA/
MAX4333ESD

dB

75 90MAX4334ESD

VCC=

2.3V

±0.25 ±1.0MAX4334ESD

nA

AV= 1 Ω0.1R

OUT

Output Resistance

mA

MAX4330–MAX4334

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

Rail-to-Rail I/O Op Amps with Shutdown

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.3V to +6.5V, VEE= 0V, VCM= 0V, V

OUT

= (VCC/ 2), RLtied to (VCC/ 2), V

S HDN

≥ 2V, TA= +25°C, unless otherwise noted.)

Low (shutdown mode)

CONDITIONS

0.8

V

SHDN

< 0.8V

VEE< V

SHDN

< V

CC

High (normal mode)

VCM= V

OUT

= VCC/ 2

µA

9 14

V2.3 6.5V

CC

Operating Supply-Voltage
Range

µA±2

SHDN Input Current

V

2.0

V

IL

SHDN Logic Threshold
(Note 1)

I

CC(SHDN)

Shutdown Supply Current
per Amplifier

17 25

µA

245 290

I

CC

Quiescent Supply Current
per Amplifier

275 325

UNITSMIN TYP MAXSYMBOLPARAMETER

VCC= 5V
VCC= 2.3V
VCC= 5V
VCC= 2.3V

VEE< VCM< V

CC

VCC= 2.3V to 6.5V

MAX433_EUA

73

76

71

72

CONDITIONS

nA±15I

OS

Input Offset Current

MAX433_EUK/EUB
MAX4331ESA

dB

71

PSRRPower-Supply Rejection Ratio

MAX4332ESA/
MAX4333ESD

MAX4334ESD

±1

±3.2

UNITSMIN TYP MAXSYMBOLPARAMETER

±3.8

VCM=
VEEto V

CC

mV

±0.7

V

OS

Input Offset Voltage

VEE< VCM< V

CC

nA±115I

B

Input Bias Current

V

IH

mV

70 150

mA20I

SC

Output Short-Circuit Current

RL = 2kΩ

100 175

8 30

RL = 100kΩ

8 30

V

OUT

Output Voltage Swing

dB

83 95

VCC= 5V

93 120

78 90

93 112

A

VOL

Large-Signal Voltage Gain

V

OUT

= 0.2V to 2.1V, RL= 100kΩ

VCC= 2.3V

V

OUT

= 0.35V to 1.95V, RL= 2kΩ

V

OUT

= 0.2V to 4.8V, RL= 100kΩ

V

OUT

= 0.35V to 4.65V, RL= 2kΩ

VCC- V

OH

V

OL

VCC- V

OH

V

OL

±1

DC ELECTRICAL CHARACTERISTICS

(VCC= +2.3V to +6.5V, VEE= 0V, VCM= 0V, V

OUT

= (VCC/ 2), RLtied to (VCC/ 2), V

SHDN

≥ 2V, TA= -40°C to +85°C, unless

otherwise noted.)

MAX433_EUA

MAX4332ESA/MAX4333ESD

MAX4331ESA

MAX433_EUK/EUB

µV/°C±3∆VOS/∆TOffset-Voltage Tempco

MAX4334ESD

-0.15 VCC+

0.15

V

CM

Common-Mode Input
Voltage Range

V

MAX4330–MAX4334

Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown

4 _______________________________________________________________________________________

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.3V to +6.5V, VEE= 0V, VCM= 0V, V

OUT

= (VCC/ 2), RLtied to (VCC/ 2), V

SHDN

≥ 2V, TA= -40°C to +85°C, unless

otherwise noted.)

VCC= 2.3V

VCC= 5V

Low (shutdown mode)

VCC= 5V
VCC= 2.3V

CONDITIONS

0.8

V

SHDN

< 0.8V

VEE< V

SHDN

< V

CC

High (normal mode)

VCM= V

OUT

= VCC/ 2

µA

17

V2.3 6.5V

CC

Operating Supply-Voltage
Range

µA±2

SHDN Input Current

V

2.0

V

IL

SHDN Logic Threshold
(Note 1)

I

CC(SHDN)

Shutdown Supply Current
per Amplifier

30

µA

330

I

CC

Quiescent Supply Current
per Amplifier

350

UNITSMIN TYP MAXSYMBOLPARAMETER

TA= -40°C to +85°C

Note 1: SHDN logic thresholds are referenced to VEE.
Note 2: The MAX4330EUK is 100% tested at T

A

= +25°C. All temperature limits are guaranteed by design.

V

IH

RL= 2kΩ

200V

CC - VOH

180V

OL

40V

OL

RL= 100kΩ

40

mVV

OUT

Output Voltage Swing

V

CC - VOH

74V

OUT

= 0.35V to 4.65V, RL = 2kΩ

VCC= 5V

90V

OUT

= 0.2V to 4.8V, RL = 100kΩ

70V

OUT

= 0.35V to 1.95V, RL = 2kΩ

VCC= 2.3V

90

dBA

VOL

Large-Signal Voltage Gain

V

OUT

= 0.2V to 2.1V, RL = 100kΩ

±5 µAI

OUT(SHDN)

Off-Leakage Current
in Shutdown

V

SHDN

< 0.8V, V

OUT

= 0V to V

CC

63

CMRR dB

Common-Mode
Rejection Ratio

MAX433_EUA/EUB

VCC=

5V

62MAX4330EUK

72MAX4331ESA

69

MAX4332ESA/
MAX4333ESD

67MAX4334ESD

58MAX433_EUA/EUB

VCC=

2.3V

57MAX4330EUK

68MAX4331ESA

66

MAX4332ESA/
MAX4333ESD

65MAX4334ESD

-0.25V <
VCM<
(V

CC

+ 0.25V)

MAX4330–MAX4334

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

Rail-to-Rail I/O Op Amps with Shutdown

_______________________________________________________________________________________ 5

AC ELECTRICAL CHARACTERISTICS

(VCC= +5V, VEE= 0V, VCM= 0V, V

OUT

= (VCC/ 2), RL = 10kΩ to (VCC/ 2), V

SHDN

≥ 2V, CL= 15pF, TA= +25°C, unless

otherwise noted.)

Slew Rate SR V/µs

Gain Margin GM dB

degrees

10

PMPhase Margin 55

Settling Time to 0.01% t

S

CONDITIONS

AV= +1V/V, 2V step µs

pFC

IN

Input Capacitance 3

f = 10kHz, V

OUT

= 2Vp-p, A

VCL

= +1V/V %

4

THDTotal Harmonic Distortion

Crosstalk

0.012

Capacitive Load Stability

V

OUT

= 4Vp-p

f = 10kHz, MAX4332/MAX4333/MAX4334

f = 10kHz

MHz3GBWPGain-Bandwidth Product

nV/√Hz

V

NOISE

Input Noise Voltage Density 28

dB

f = 10kHz

pA/√Hz

-124

I

NOISE

Input Current Noise Density 0.26

AV= 1, no sustained oscillations pF150

kHz

1.5

Shutdown Time
Enable Time from Shutdown

t

SHDN

µs0.8

t

ENABLE

FPBWFull-Power Bandwidth

µs1

190

Power-Up Time t

ON

µs5

UNITSMIN TYP MAXSYMBOLPARAMETER

60

-20
100 1k 100k 10M

GAIN AND PHASE

vs. FREQUENCY (NO LOAD)

MAX4330/34-TOC01

FREQUENCY (Hz)

GAIN (dB)

PHASE (DEGREES)

10k 1M 100M

50
40
30
20
10

0

-10

180

-180

135
90
45
0

-45

-90

-135

GAIN

PHASE

AV = +1000

60

-40
100 1k 100k 10M

GAIN AND PHASE

vs. FREQUENCY (C

L

= 150pF)

MAX4330/34-TOC02

FREQUENCY (Hz)

GAIN (dB)

PHASE (DEGREES)

10k 1M 100M

40

20

0

-20

180

-180

108

36

-36

-108

144

72

0

-72

-144

GAIN

AV = +1000

PHASE

0

-100
10 100

10k

1M 10M

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

MAX4330/34-TOC03

FREQUENCY (Hz)

PSRR (dB)

1k

100k

100M

-20

-40

-60

-80

AV = +1

__________________________________________Typical Operating Characteristics

(VCC= +5V, VEE= 0V, VCM= VCC/ 2, V

SHDN

> 2V, TA= +25°C, unless otherwise noted.)

MAX4330–MAX4334

Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown

6 _______________________________________________________________________________________

-40

-20

-30

10

0

-10

40
30
20

50

-40 0 20-20 40 60 80 100

INPUT BIAS CURRENT

vs. TEMPERATURE

MAX4330-34 TOC8a

TEMPERATURE (°C)

INPUT BIAS CURRENT (nA)

V

CC

= 6.5V, V

CM

= V

CC

V

CC

= 2.7V, V

CM

= V

CC

V

CC

= 6.5V, V

CM

= V

EE

V

CC

= 2.3V, V

CM

= V

EE

250

200

150

100

50

0

MAX4330/34-TOC09

TEMPERATURE (°C)

-20-40-60 200 60 8040 100

OUTPUT SWING HIGH

vs. TEMPERATURE

V

CC

- V

OUT

(mV)

RL TO V

EE

V

CC

= 6.5V, RL = 2kΩ

V

CC

= 2.3V, RL = 2kΩ

V

CC

= 2.3V, RL = 100kΩ

V

CC

= 6.5V, RL = 100kΩ

120

100

80

40

20

60

0

MAX4330/34-TOC12

TEMPERATURE (°C)

-20 0-60 -40 20 40 60 80 100

OUTPUT SWING LOW

vs. TEMPERATURE

V

OUT

- V

EE

(mV)

RL TO V

CC

V

CC

= 2.3V

R

L

= 100kΩ

V

CC

= 6.5V

R

L

= 100kΩ

V

CC

= 2.3V

R

L

= 2kΩ

V

CC

= 6.5V

R

L

= 2kΩ

1k

0.01
100 1k 100k 10M

OUTPUT IMPEDANCE

vs. FREQUENCY

MAX4330/34-TOC04

FREQUENCY (Hz)

OUTPUT IMPEDANCE (Ω)

10k 1M 100M

100

10

1

0.1

AV = +1

1200

1000

800

400

0

200

600

-200

TEMPERATURE (°C)

-40 -20 0-60 20 40 60 80 100

OUTPUT LEAKAGE CURRENT

vs. TEMPERATURE

OUTPUT LEAKAGE CURRENT (pA)

AV = OPEN LOOP
SHDN = 0V

OUT SHORT

TO V

EE

V

CC

= 6.5V

V

CC

= 2.3V

OUT SHORT

TO V

CC

V

CC

= 2.3V TO 6.5V

MAX4330/34-TOC07

350

310

330

250

270

290

210
190
170

230

150

TEMPERATURE (°C)

-20-60 20 60 1000-40 40 80

SUPPLY CURRENT

vs. TEMPERATURE

I

CC

(µA)

MAX4330/34-TOC05

V

CC

= 6.5V

V

CC

= 2.3V

25

20

15

10

5

TEMPERATURE (°C)

-40-60 -20 40 60 80200 100

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

I

CC

(µA)

MAX4330/34-TOC06

SHDN = 0V

V

CC

= 6.5V

V

CC

= 2.3V

1500

500

0

1000

-500

-1000

-1500

TEMPERATURE (°C)

-40 -20 0-60 20 40 60 80 100

INPUT OFFSET VOLTAGE

vs. TEMPERATURE

INPUT OFFSET VOLTAGE (µV)

MAX4330/34-TOC07a

SOT/µMAX PACKAGES

SO PACKAGE

-30

-10

-20

10

0

30

20

40

0 2 31 4 5 6 7

INPUT BIAS CURRENT

vs. COMMON-MODE VOLTAGE

MAX4330-34/TOC08

COMMON-MODE VOLTAGE (V)

INPUT BIAS CURRENT (nA)

VCC = 2.3V

VCC = 6.5V

____________________________Typical Operating Characteristics (continued)

(VCC= +5V, VEE= 0V, VCM= VCC/ 2, V

SHDN

> 2V, TA= +25°C, unless otherwise noted.)

MAX4330–MAX4334

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

Rail-to-Rail I/O Op Amps with Shutdown

_______________________________________________________________________________________

7

____________________________Typical Operating Characteristics (continued)

(VCC= +5V, VEE= 0V, VCM= VCC/ 2, V

SHDN

> 2V, TA= +25°C, unless otherwise noted.)

118

108

113

103

93

83

88

98

78

MAX4330/34-TOC13

OUTPUT VOLTAGE: EITHER SUPPLY (V)

0.10 0.2 0.3 0.50.4 0.6

LARGE-SIGNAL GAIN

vs. OUTPUT VOLTAGE

(V

CC

= 2.3V, RL TO VCC)

GAIN (dB)

RL = 100kΩ

RL = 10kΩ

RL = 2kΩ

-60

-70

-80

-90

-110

-130

-120

-100

-140

MAX4330/34-TOC11

TEMPERATURE (°C)

-20-40-60 0 20 806040 100

COMMON-MODE REJECTION

vs. TEMPERATURE

COMMON-MODE REJECTION (dB)

V

CM

= -0.25V

TO +5.25V

115

105

110

100

95

90

85

MAX4330/34-TOC14

TEMPERATURE (°C)

-40-60 -20 0 60 804020 100

LARGE-SIGNAL GAIN

vs. TEMPERATURE (R

L

= 2kΩ)

GAIN (dB)

RL TO V

CC

RL TO V

EE

RL TO V

EE

V

OUT

(p-p) = V

CC

- 1V

RL TO V

CC

V

CC

= 2.3V

V

CC

= 6.5V

118
114
110
106

98

90

94

102

86

MAX4330/34-TOC10

OUTPUT VOLTAGE: EITHER SUPPLY (V)

0.10 0.2 0.50.40.3 0.6

LARGE-SIGNAL GAIN

vs. OUTPUT VOLTAGE

(V

CC

= 2.3V, RL TO VEE)

GAIN (dB)

RL = 10kΩ

RL = 2kΩ

RL = 100kΩ

130

120

125

115

105

95

100

110

90

MAX4330/34-TOC15

OUTPUT VOLTAGE: EITHER SUPPLY (V)

0.10 0.2 0.3 0.50.4 0.6

LARGE-SIGNAL GAIN

vs. OUTPUT VOLTAGE

(V

CC

= 6.5V, RL TO VEE)

GAIN (dB)

RL = 100kΩ

RL = 10kΩ

RL = 2kΩ

140

130

120

100

90

110

80

MAX4330/34-TOC16

OUTPUT VOLTAGE: EITHER SUPPLY (V)

0 0.1 0.2 0.3 0.4 0.5 0.6

LARGE-SIGNAL GAIN

vs. OUTPUT VOLTAGE

(V

CC

= 6.5V, RL TO VCC)

GAIN (dB)

RL = 100kΩ

RL = 10kΩ

RL = 2kΩ

130

125

120

115

110

MAX4330/34-TOC17

TEMPERATURE (°C)

-40-60 -20 0 60 804020 100

LARGE-SIGNAL GAIN

vs. TEMPERATURE (R

L

= 100kΩ)

GAIN (dB)

V

OUT

(p-p) =

V

CC

- 1V

RL TO V

CC

OR V

EE

V

CC

= 2.3V

RL TO V

CC

V

CC

= 6.5V

RL TO V

EE

V

CC

= 6.5V

2.00

1.95

1.90

1.85

1.80

1.75

1.70

1.65

1.60

MAX4330/34-TOC18

TEMPERATURE (°C)

-40-60 -20 0 60 804020 100

MINIMUM OPERATING VOLTAGE

vs. TEMPERATURE

V

CC

(V)

1

0.001
1 1k 10k 100k

TOTAL HARMONIC DISTORTION

AND NOISE vs. FREQUENCY

0.01

0.1

MAX4330/34-TOC19

FREQUENCY (Hz)

THD + NOISE (%)

10010

AV = +1
2Vp-p SIGNAL
500kHz LOWPASS FILTER
R

L

= 10kΩ TO V

CC

/ 2

MAX4330–MAX4334

Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown

8 _______________________________________________________________________________________

1

0.001

4.0 5.0

TOTAL HARMONIC DISTORTION

AND NOISE vs. PEAK-TO-PEAK

SIGNAL AMPLITUDE

0.01

0.1

MAX4330/34-TOC20

PEAK-TO-PEAK SIGNAL AMPLITUDE (V)

THD + NOISE (%)

4.6 4.84.2 4.4

A

V

= +1
1kHz SINE WAVE
500kHz LOWPASS FILTER
R

L

TO V

CC

/ 2

RL = 2kΩ

RL = 10kΩ

RL = 100kΩ

80

100

90

120

110

130

140

1 10 100 1000 10000

CROSSTALK vs. FREQUENCY

MAX4330/34-TOC22

FREQUENCY (kHz)

CROSSTALK (dB)

10

0

0 200 600 1000

CAPACITIVE LOAD STABILITY

8

MAX4330/34-TOC21

LOAD CAPACITANCE (pF)

LOAD RESISTANCE (kΩ)

400 800

6

4

2

UNSTABLE

REGION

RL TO V

EE

V

OUT

= V

CC

/ 2

LARGE-SIGNAL TRANSIENT RESPONSE

(NONINVERTING)

MAX4330/34-TOC24

TIME (5µs/div)

IN

OUT

VOLTAGE (2V/div)

AV = -1

IN

OUT

SMALL-SIGNAL TRANSIENT RESPONSE

(INVERTING)

MAX4330/34-TOC23

TIME (200ns/div)

VOLTAGE (50mV/div)

LARGE-SIGNAL TRANSIENT RESPONSE

(INVERTING)

MAX4330/34-TOC25

TIME (5µs/div)

IN

OUT

VOLTAGE (2V/div)

AV = +1

IN

OUT

SMALL-SIGNAL TRANSIENT RESPONSE

(NONINVERTING)

MAX4330/34-TOC22

TIME (200ns/div)

VOLTAGE (50mV/div)

____________________________Typical Operating Characteristics (continued)

(VCC= +5V, VEE= 0V, VCM= VCC/ 2, V

SHDN

> 2V, TA= +25°C, unless otherwise noted.)

MAX4330–MAX4334

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

Rail-to-Rail I/O Op Amps with Shutdown

_______________________________________________________________________________________ 9

Pin Description

V

EE

42

OUT61

44

——

114

——

MAX4333

Negative Supply. Ground for single­supply operation.

Output

IN-24

IN+33

——

——

——

——

Inverting Input

Noninverting Input

IN1+,

IN2+

——

OUT1,

OUT2

——

3, 73, 5

1, 91, 7

3, 53, 11

1, 71, 13

Noninverting Inputs to Amplifiers
1 and 2

Outputs for Amplifiers 1 and 2

N.C.1, 5—

V

CC

75

——

108

—5, 7, 8, 10

414

No Connection. Not internally
connected.

Positive Supply

SHDN

8—

IN1-,

IN2-

——

——

2, 82, 6

——

2, 62, 12

Shutdown Input for Amplifier. Drive
low for shutdown mode. Drive
high or connect to VCCfor normal
operation.

Inverting Inputs to Amplifiers
1 and 2

IN3+,

IN4+

——

IN3-,

IN4-

——

——

——

10, 12—

9, 13—

Noninverting Inputs for Amplifiers
3 and 4

Inverting Inputs for Amplifiers
3 and 4

OUT3,

OUT4

——

SHDN1,

SHDN2

——

——

5, 6—

8, 14—

—6, 9

Outputs for Amplifiers 3 and 4

Shutdown for Amplifiers 1 and 2.
Drive low for shutdown mode.
Drive high or connect to VCCfor
normal operation.

NAME

10-Pin

µMAX

14-Pin SO

MAX4332MAX4331MAX4330 MAX4334

FUNCTION

PIN

MAX4330–MAX4334

Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown

10 ______________________________________________________________________________________

_______________Detailed Description

Rail-to-Rail Input Stage

The MAX4330–MAX4334 have rail-to-rail input and out­put stages that are specifically designed for low­voltage, single-supply operation. The input stage con­sists of separate NPN and PNP differential stages,
which operate together to provide a common-mode
range extending to 0.25V beyond both supply rails. The
crossover region, which occurs halfway between V

CC

and VEE, is extended to minimize degradation in CMRR
caused by mismatched input pairs. The input offset volt­age is typically 250µV. Low offset voltage, high band­width, rail-to-rail common-mode input range, and
rail-to-rail outputs make this family of op amps an excel­lent choice for precision, low-voltage data-acquisition
systems.

Since the input stage consists of NPN and PNP pairs,
the input bias current changes polarity as the input volt­age passes through the crossover region. Match the
effective impedance seen by each input to reduce the
offset error due to input bias currents flowing through
external source impedances (Figures 1a and 1b). The
combination of high source impedance with input
capacitance (amplifier input capacitance plus stray
capacitance) creates a parasitic pole that produces an
underdamped signal response. Reducing input capaci­tance or placing a small capacitor across the feedback
resistor improves response.

The MAX4330–MAX4334’s inputs are protected from
large differential input voltages by internal 1kΩ series
resistors and back-to-back triple diode stacks across
the inputs (Figure 2). For differential input voltages
(much less than 1.8V), input resistance is typically

2.3MΩ. For differential input voltages greater than 1.8V,
input resistance is around 2kΩ, and the input bias cur­rent can be approximated by the following equation:

I

BIAS

= (V

DIFF

- 1.8V) / 2kΩ

In the region where the differential input voltage
approaches 1.8V, input resistance decreases exponen­tially from 2.3MΩ to 2kΩ as the diode block begins con­ducting. Inversely, the bias current increases with the
same curve.

R3

R3 = R1 R2

R1 R2

MAX4330
MAX4331
MAX4332
MAX4333
MAX4334

Figure 1a. Reducing Offset Error Due to Bias Current
(Noninverting)

R3

R3 = R1 R2

R1 R2

MAX4330
MAX4331
MAX4332
MAX4333
MAX4334

Figure 1b. Reducing Offset Error Due to Bias Current
(Inverting)

MAX4330–MAX4334

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

Rail-to-Rail I/O Op Amps with Shutdown

______________________________________________________________________________________ 11

Rail-to-Rail Output Stage

The MAX4330–MAX4334 output stage can drive up to a
2kΩ load and still typically swing within 125mV of the
rails. Figure 3 shows the output voltage swing of a
MAX4331 configured as a unity-gain buffer. The operat­ing voltage is a single +3V supply, and the input volt­age is 3Vp-p. The output swings to within 70mV of V

EE

and 100mV of VCC, even with the maximum load
applied (2kΩ to mid-supply).

Driving a capacitive load can cause instability in many
op amps, especially those with low quiescent current.
The MAX4330–MAX4334 are stable for capacitive loads
up to 150pF. The Capacitive Load Stability graph in the

Typical Operating Characteristics

gives the stable
operating region for capacitive vs. resistive loads.
Figures 4 and 5 show the response of the MAX4331
with an excessive capacitive load, compared with the
response when a series resistor is added between the
output and the capacitive load. The resistor improves
the circuit’s response by isolating the load capacitance
from the op amp’s output (Figure 6).

1k

1k

Figure 2. Input Protection Circuit

Figure 3. Rail-to-Rail Input/Output Voltage Range

IN

1V/div

1V/div

OUT

20µs/div

V

CC

= 3V, RL = 2kΩ TO VCC / 2

Figure 4. Small-Signal Transient Response with Excessive
Capacitive Load

IN

50mV/div

50mV/div

OUT

2µs/div

R

ISO

= 0Ω, AV = +1

C

L

= 510pF

V

CC

= 3V, RL = 100kΩ

MAX4330–MAX4334

Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown

12 ______________________________________________________________________________________

__________Applications Information

Power-Up

The MAX4330–MAX4334 outputs typically settle within
5µs after power-up. Using the test circuit of Figure 7,
Figures 8 and 9 show the output voltage and supply
current on power-up and power-down.

Shutdown Mode

The MAX4331/MAX4333 feature a low-power shutdown
mode. When the shutdown pin (SHDN) is pulled low, the
supply current drops to 9µA per amplifier (typical), the
amplifier is disabled, and the outputs enter a high­impedance state. Pulling SHDN high or leaving it float­ing enables the amplifier. Figures 10 and 11 show the
MAX4331/MAX4333’s output voltage and supply-current
responses to a shutdown pulse.

Figure 5. Small-Signal Transient Response with Excessive
Capacitive Load and Isolation Resistor

IN

50mV/div

50mV/div

OUT

2µs/div

AV = +1, CL = 510pF
R

ISO

= 39Ω

Figure 6. Capacitive-Load-Driving Circuit

R

ISO

C

L

MAX4330
MAX4331
MAX4332
MAX4333
MAX4334

Figure 7. Power-Up/Shutdown Test Circuit

SHDN

V

OUT

0V TO +2.7V
STEP FOR
SHUTDOWN
TEST

0V TO +2.7V STEP

FOR POWER-UP

TEST, +2.7V STEP

FOR SHUTDOWN-

ENABLE TEST

SUPPLY-CURRENT

MONITORING POINT

V

CC

100Ω2k

10k

2k

MAX4330
MAX4331
MAX4332
MAX4333
MAX4334

Figure 8. Power-Up/Down Output Voltage

V

CC

1V/div

500mV/div

OUT

5µs/div

MAX4330–MAX4334

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

Rail-to-Rail I/O Op Amps with Shutdown

______________________________________________________________________________________ 13

Do not three-state SHDN. Due to the output leakage
currents of three-state devices and the small internal
pull-up current for SHDN, three-stating this pin could
result in indeterminate logic levels, and could adversely
affect op-amp operation.

The logic threshold for SHDN is always referred to VEE,
not GND. When using dual supplies, pull SHDN to V

EE

to place the op amp in shutdown mode.

Power Supplies and Layout

The MAX4330–MAX4334 operate from a single +2.3V
to +6.5V power supply, or from dual ±1.15V to ±3.25V
supplies. For single-supply operation, bypass the
power supply with a 0.1µF capacitor to ground (VEE).
For dual supplies, bypass both VCCand VEEwith their
own set of capacitors to ground.

Good layout technique helps optimize performance by
decreasing the amount of stray capacitance at the op
amp’s inputs and outputs. To decrease stray capaci­tance, minimize trace lengths by placing external com­ponents close to the op amp’s pins.

Figure 9. Power-Up/Down Supply Current

V

CC

1V/div

100µA/div

I

CC

5µs/div

Figure 11. Shutdown Enable/Disable Supply Current

SHDN

1V/div

100µA/div

I

CC

5µs/div

Figure 10. Shutdown Output Voltage Enable/Disable

SHDN

1V/div

500mV/div

OUT

5µs/div

MAX4330–MAX4334

Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown

14 ______________________________________________________________________________________

Pin Configurations (continued)

OUT

N.C.V

EE

1

2

8

7

SHDN
V

CC

IN-

IN+

N.C.

SO/µMAX

TOP VIEW

3

4

6

5

MAX4331

IN2-

IN2+V

EE

1

2

87V

CC

OUT2IN1-

IN1+

OUT1

SO

3

4

6

5

MAX4332

1
2
3
4
5

10

9
8
7
6

V

CC

OUT2
IN2­IN2+

V

EE

IN1+

IN1-

OUT1

MAX4333

µMAX

SHDN2

SHDN1

14
13
12
11
10

9
8

1
2
3
4
5
6
7

OUT4
IN4­IN4+
V

EE

V

CC

IN1+

IN1-

OUT1

MAX4334

IN3+
IN3­OUT3OUT2

IN2-

IN2+

SO

14
13
12
11
10

9
8

1
2
3
4
5
6
7

V

CC

OUT2
IN2­IN2+V

EE

IN1+

IN1-

OUT1

MAX4333

N.C.
SHDN2
N.C.N.C.

SHDN1

N.C.

SO

MAX4330–MAX4334

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

Rail-to-Rail I/O Op Amps with Shutdown

______________________________________________________________________________________ 15

P

D

E

F

W

P

2

P

0

D

1

A

0

B

0

K

0

t

±0.102
±0.102

A

0

B

0

D

D

1

3.200

3.099

1.499

0.991

±0.102
±0.051
±0.102
±0.102

1.753

3.505

1.397

3.988

E
F
K

0

P

+0.102
+0.000

NOTE: DIMENSIONS ARE IN MM.
AND FOLLOW EIA481-1 STANDARD.

+0.305

-0.102

+0.254
+0.000

P

0

3.988 ±0.102

P

0

10 40.005 ±0.203

P

2

2.007 ±0.051

t 0.254 ±0.127

W 8.001

5 SOT23-5

Tape-and-Reel Information

Chip Information

MAX4330/MAX4331

TRANSISTOR COUNT: 199
SUBSTRATE CONNECTED TO V

EE

MAX4332/MAX4333

TRANSISTOR COUNT: 398
SUBSTRATE CONNECTED TO V

EE

MAX4334

TRANSISTOR COUNT: 796
SUBSTRATE CONNECTED TO V

EE

MAX4330–MAX4334

Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown

________________________________________________________Package Information

SOT5L.EPS

8LUMAXD.EPS

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

16

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