Datasheet MAX4164ESD, MAX4162EUK, MAX4162ESA, MAX4163EUA, MAX4163ESA Datasheet (Maxim)

_______________General Description

The MAX4162/MAX4163/MAX4164 are single/dual/quad,
micropower operational amplifiers that combine an
exceptional bandwidth to power consumption ratio with
true rail-to-rail inputs and outputs. They consume a
mere 25µA quiescent current per amplifier, yet achieve
200kHz gain-bandwidth product and are unity-gain
stable while driving any capacitive load. The
MAX4162/MAX4163/MAX4164 operate from either a
single supply (+2.7V to +10V) or dual supplies (±1.35V
to ±5V), with an input common-mode voltage range that
extends 250mV

beyond

either supply rail. These ampli­fiers use a proprietary architecture to achieve a very
high input common-mode rejection ratio without the
mid-swing nonlinearities present in other Rail-to-Rail

®

op amps. This architecture also maintains high open­loop gain and output swing while driving substantial
loads.

The combination of excellent bandwidth/power perfor­mance, single-supply operation, and miniature footprint
makes these op amps ideal for portable equipment and
other low-power, single-supply applications. The single
MAX4162 is available in 8-pin SO and space-saving
5-pin SOT23 packages. The MAX4163 is available in an
8-pin µMAX or SO, while the MAX4164 comes in a
14-pin SO.

________________________Applications

Battery-Powered Devices Medical Instruments
pH Probes Ionization Detectors
Portable Equipment Cellular Phones
Low-Power, Low-Voltage

Equipment

____________________________Features

♦ 5-Pin SOT23 Package (MAX4162)
♦ 1.0pA Typical Input Bias Current
♦ Fully Specified Single-Supply Operation

at 3V and 5V

♦ Input Common-Mode Voltage Range Extends

250mV Beyond Either Supply Rail

♦ Rail-to-Rail Output Swing
♦ 200kHz Gain-Bandwidth Product
♦ 25µA Quiescent Current per Amplifier
♦ Excellent CMRR, PSRR, and Gain Linearity
♦ No Phase Reversal for Overdriven Inputs
♦ Unity-Gain Stable
♦ Stable with Any Capacitive Load
♦ Internally Short-Circuit Protected to Either Rail

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,

Rail-to-Rail I/O Op Amps

________________________________________________________________

Maxim Integrated Products

1

MAX152

MAX4162

MAX4162

MAX6120

MICROPOWER ±1.2V REFERENCE

V

REF+

V

DD

V

DD

V

DD

V

SS

V

SS

R

V

SS

-1.2V

+1.2V

V

OUT

V

OUT

GND

V

IN

3V

IN+

IN-

R

IN-

IN+

V

OUT

-3V

V

REF-

________Typical Application Circuit

_________________Pin Configurations

19-1195; Rev 0; 4/97

PART

MAX4162ESA

-40°C to +85°C

TEMP.

RANGE

PIN-

PACKAGE

8 SO

______________Ordering Information

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

SOT

TOP MARK

—

TOP VIEW

V

SS

IN-

IN+

1

5

V

DD

OUT

MAX4162

SOT23-5

2

3

4

OUT

N.C.

V

SS

1

2

87N.C.

V

DD

IN-

IN+

N.C.

SO

3

4

6

5

MAX4162

MAX4162EUK -40°C to +85°C 5 SOT23-5 AABX
MAX4163ESA

-40°C to +85°C 8 SO —
MAX4163EUA -40°C to +85°C 8 µMAX —
MAX4164ESD

-40°C to +85°C 14 SO —

Pin Configurations continued at end of data sheet.

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

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,
Rail-to-Rail I/O Op Amps

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS: +3V Operation

(VDD=+3V, VSS= 0V, VCM= V

DD

/ 2, V

OUT

= V

DD

/ 2, RLtied to V

DD

/ 2, TA= -40°C to +85°C, unless otherwise noted. Typical values

are at T

A

= +25°C.)

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 (VDDto VSS)................................................+11V

IN+, IN-, OUT Voltage......................(V

DD

+ 0.3V) to (V

SS

- 0.3V)

Short-Circuit Duration (to either rail)...........................Continuous

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 4.1mW/°C above +70°C)...............330mW

14-Pin SO (derate 8.00mW/°C above +70°C)................640mW

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

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

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

To either supply rail

VOL- V

SS

VDD- V

OH

VOL- V

SS

VDD- V

OH

Inferred from PSRR test

RL= 10kΩ

Inferred from CMRR test

TA= +25°C
TA= -40°C to +85°C
TA= +25°C
TA= -40°C to +85°C

CONDITIONS

15Output Short-Circuit Current

mV

3 25

RL= 100kΩ

Output Voltage Swing

3 25

30 180

RL= 10kΩ

30 180

dBLarge-Signal Voltage Gain 85 120

dBCommon-Mode Rejection Ratio 70 100

pA1.0 100

V2.7 10.0Operating Voltage Range

Input Bias Current (Note 1)

TΩ

VSS- VDD+

0.25 0.25

Input Common-Mode Voltage Range

>10Differential Input Resistance

±6

±0.5 ±5

MAX4164

±0.5 ±3

Input Offset Voltage

±4

MAX4162

±0.5 ±4

mV

±5

MAX4163

UNITSMIN TYP MAXPARAMETER

AV= +1V/V

kHz200Gain-Bandwidth Product

VDD= 2.7V to 10VPower-Supply Rejection Ratio dB80 110

mA

0.1Closed-Loop Output Resistance

V

VCM= (VSS- 0.25V) to (VDD+ 0.25V)

Ω

µV/°CInput Offset Voltage Tempco 2

TA= +25°C
TA= -40°C to +85°C

µA25 40Supply Current (per amplifier)

degrees60Phase Margin

dB12Gain Margin

V

OUT

= 1V to 2V step µs50Settling Time to 0.1%

VDD= 0V to 3V step, VIN= VDD/ 2, AV= +1V/V µs20Turn-On Time

V/ms115Slew Rate

f = 1kHz, V

OUT

= 2Vp-p, RL= 100kΩ, AV= +1V/VTotal Harmonic Distortion %0.02

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,

Rail-to-Rail I/O Op Amps

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS: +3V Operation (continued)

(VDD=+3V, VSS= 0V, VCM= V

DD

/ 2, V

OUT

= V

DD

/ 2, RLtied to V

DD

/ 2, TA= -40°C to +85°C, unless otherwise noted. Typical values

are at T

A

= +25°C.)

CONDITIONS UNITSMIN TYP MAXPARAMETER

pF1.5Input Common-Mode Capacitance

kHz700Internal Charge-Pump Frequency

µVp-p100Charge-Pump Output Feedthrough

f = 1kHz

nV/√Hz

80Input Noise Voltage Density

ELECTRICAL CHARACTERISTICS: +5V Operation

(VDD= +5V, VSS= 0V, VCM= V

DD

/ 2, V

OUT

= V

DD

/ 2, RLtied to V

DD

/ 2, TA= -40°C to +85°C, unless otherwise noted. Typical

values are at T

A

= +25°C.)

VOL- V

SS

VDD- V

OH

VOL- V

SS

VDD- V

OH

Inferred from PSRR test

Inferred from CMRR test

TA= +25°C
TA= -40°C to +85°C
TA= +25°C
TA= -40°C to +85°C

CONDITIONS

mV

5 40

RL= 100kΩ

Output Voltage Swing

5 40

50 300

RL= 10kΩ

50 300

dB85 120Large-Signal Voltage Gain

dBCommon-Mode Rejection Ratio 70 100

pA1.0 100

V2.7 10.0Operating Voltage Range

Input Bias Current (Note 1)

VSS- VDD+

0.25 0.25

Input Common-Mode Voltage Range

±6

MAX4164

±0.5 ±5

±0.5 ±3

Input Offset Voltage

±4

MAX4162

±0.5 ±4

mV

±5

MAX4163

UNITSMIN TYP MAXPARAMETER

VCM= (VSS- 0.25V) to (VDD+ 0.25V)

V

pF0.7Differential Input Capacitance

µA27 45Supply Current (per amplifier)

TΩ>10Differential Input Resistance

µV/°C2Input Offset Voltage Tempco

TA= +25°C
TA= -40°C to +85°C

AV= +1V/V

To either supply rail mAOutput Short-Circuit Current

0.1

15

Closed-Loop Output Resistance Ω

VDD= 4.5V to 10V dBPower-Supply Rejection Ratio

200

80 110

Gain-Bandwidth Product kHz

degreesPhase Margin

12

60

Gain Margin dB

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,
Rail-to-Rail I/O Op Amps

4 _______________________________________________________________________________________

0

5

10

15

20

25

30

1 2 3 4 5 6 7

8

9

10

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX4162-01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

10

12

14

16

18

20

22

24

26

28

-40 -20 0 20

40

60 80 100

SUPPLY CURRENT

vs. TEMPERATURE

MAX4162-02

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

VCC = 5V

VCC = 3V

-150

-130

-110

-90

-70

-50

-30

-10

10

30

50

1 2 3 4 5 6 7 8 9 10

INPUT OFFSET VOLTAGE VARIATION

vs. SUPPLY VOLTAGE

MAX4162-03

SUPPLY VOLTAGE (V)

V

OS

(µV)

ELECTRICAL CHARACTERISTICS: +5V Operation (continued)

(VDD= +5V, VSS= 0V, VCM= V

DD

/ 2, V

OUT

= V

DD

/ 2, RLtied to V

DD

/ 2, TA= -40°C to +85°C, unless otherwise noted. Typical

values are at T

A

= +25°C.)

f = 1kHz, V

OUT

= 2Vp-p, RL= 100kΩ, AV= +1V/V %0.02Total Harmonic Distortion

V/ms115Slew Rate

V

OUT

= 1V to 4V step µs70Settling Time to 0.1%

VDD= 0V to 5V step, VIN= V

DD

/ 2, AV= +1V/V µs40

CONDITIONS

Turn-On Time

f = 1kHz

nV/√Hz

80Input Noise Voltage Density

pF1.5Input Common-Mode Capacitance

MHz700Internal Charge-Pump Frequency

µVp-p100Charge-Pump Output Feedthrough

UNITSMIN TYP MAXPARAMETER

__________________________________________Typical Operating Characteristics

(VDD= +5V, VSS= 0V, VCM= V

DD

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

Note 1: Input bias current guaranteed by design, not production tested.
Note 2: The MAX4162EUK specifications are 100% tested at T

A

= +25°C. Limits over the extended temperature range are

guaranteed by design, not production tested.

pF0.7Differential Input Capacitance

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,

Rail-to-Rail I/O Op Amps

_______________________________________________________________________________________

5

-1000

-750

-500

-250

0

250

500

750

1000

-40 -20 0

20

40 60 80 100

INPUT OFFSET VOLTAGE

vs. TEMPERATURE

MAX4162-04

TEMPERATURE (°C)

V

OS

(µV)

-14

-12

-10

-8

-6

-4

-2

0

2

4

6

-0.5 0.5 1.5 2.5 3.5 4.5 5.5

INPUT OFFSET VOLTAGE VARIATION

vs. COMMON-MODE VOLTAGE

MAX4162-05

COMMON-MODE VOLTAGE (V)

V

OS

(µV)

10

30

50

70

90

110

130

0.1 1 10 100 1k 10k 100k 1M

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

MAX4162-08

FREQUENCY (Hz)

PSRR (dB)

AV = +1

0

10

20

30

40

50

70
60

80

100

90

110

120

COMMON-MODE REJECTION

vs. TEMPERATURE

MAX4162-10

TEMPERATURE (°C)

COMMON-MODE REJECTION (dB)

-40 -20 0 20

40

60 80 100

VDD = 3V OR 5V
V

CM

= -0.25V TO VDD + 0.25V

10

30

50

70

90

110

130

-40 -20 0 20

40

60 80 100

POWER-SUPPLY REJECTION RATIO

vs. TEMPERATURE

MAX4162-09

TEMPERATURE (°C)

PSRR (dB)

0

20

40

60

80

100

120

140

160

OPEN-LOOP GAIN

vs. TEMPERATURE

MAX4162-11

TEMPERATURE (°C)

OPEN-LOOP GAIN (dB)

-40 -20 0 20

40

60 80 100

VDD = 3V OR 5V

RL = 10kΩ

RL = 100kΩ

0.1

1

10

100

1000

10,000

0.1 1

10

100 1k 10k 100k 1M

OUTPUT IMPEDANCE

vs. FREQUENCY

MAX4162-12a

FREQUENCY (Hz)

OUTPUT IMPEDANCE (Ω)

AV = +1

____________________________Typical Operating Characteristics (continued)

(VDD= +5V, VSS= 0V, VCM= V

DD

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

0

5

10

15

20

25

30

35

40

SHORT-CIRCUIT OUTPUT CURRENT

vs. TEMPERATURE

MAX4162-13

TEMPERATURE (°C)

SHORT-CIRCUIT OUTPUT CURRENT (mA)

-40 -20 0 20

40

60 80 100

VDD = 3V OR 5V
SHORT TO EITHER SUPPLY RAIL

1.00

1.25

1.50

1.75

2.00

0 2.50 3.751.25

5.00

COMMON-MODE INPUT CAPACITANCE

vs. COMMON-MODE VOLTAGE

MAX4162-12b

COMMON-MODE VOLTAGE (V)

COMMON-MODE INPUT CAPACITANCE (pF)

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,
Rail-to-Rail I/O Op Amps

6 _______________________________________________________________________________________

0

50

100

150

200

250

300

0 0.4 0.8 1.2 1.6 2.0

MAXIMUM OUTPUT VOLTAGE

vs. LOAD CURRENT

MAX4162-14

LOAD CURRENT (mA)

V

DD

- V

OUT(MAX)

(mV)

VDD = 3V OR 5V
LOAD TO V

DD

/ 2

0

50

100

150

200

250

300

0 0.4 0.8 1.2 1.6 2.0

MINIMUM OUTPUT VOLTAGE

vs. LOAD CURRENT

MAX4162-15

LOAD CURRENT (mA)

V

OUT(MIN)

(mV)

VDD = 3V OR 5V
LOAD TO V

DD

/ 2

0

10

20

30

40

50

60

70

80

90

100

MAXIMUM OUTPUT VOLTAGE

vs. TEMPERATURE

(V

DD

= 5V)

MAX4162-16

TEMPERATURE (°C)

V

DD

- V

OUT(MAX)

(mV)

-40 -20 0 20

40

60 80 100

VDD = 5V
LOAD TO V

DD

/ 2

RL = 5kΩ

RL = 10kΩ

RL = 100kΩ

0

10

20

30

40

50

60

70

80

90

MINIMUM OUTPUT VOLTAGE

vs. TEMPERATURE

(V

DD

= 3V)

MAX4162-19

TEMPERATURE (°C)

V

OUT(MIN)

(mV)

-40 -20 0 20

40

60 80 100

VDD = 3V
LOAD TO V

DD

/ 2

RL = 5kΩ

RL = 10kΩ

RL = 100kΩ

0

20

40

60

80

100

120

140

MINIMUM OUTPUT VOLTAGE

vs. TEMPERATURE

(V

DD

= 5V)

MAX4162-17

TEMPERATURE (°C)

V

OUT(MIN)

(mV)

-40 -20 0 20

40

60 80 100

VDD = 5V
LOAD TO V

DD

/ 2

RL = 5kΩ

RL = 10kΩ

RL = 100kΩ

0

10

20

30

40

50

60

MAXIMUM OUTPUT VOLTAGE

vs. TEMPERATURE

(V

DD

= 3V)

MAX4162-18

TEMPERATURE (°C)

V

DD

- V

OUT(MAX)

(mV)

-40 -20 0 20

40

60 80 100

VDD = 3V
LOAD TO V

DD

/ 2

RL = 5kΩ

RL = 10kΩ

RL = 100kΩ

0

20

40

60

80

100

120

-0.5 0.5 1.5 2.5 3.5 4.5 5.5

NOISE VOLTAGE DENSITY

vs. COMMON-MODE VOLTAGE

MAX4162-20

NOISE VOLTAGE DENSITY (nV/√Hz)

100Hz

1kHz

10kHz

0

10

20

30

40

50

60

70

80

90

100

10 100 1k 10k 1M100k

NOISE VOLTAGE DENSITY

vs. FREQUENCY

MAX4162-21a

FREQUENCY (Hz)

NOISE VOLTAGE DENSITY (nV/√Hz )

0.001

0.01

0.1

1

10 1k100

10k

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

MAX4162-21b

FREQUENCY (Hz)

THD + NOISE (%)

AV = +1
R

L

= 100kΩ

Vp-p = 4.99V

Vp-p = 1V

____________________________Typical Operating Characteristics (continued)

(VDD= +5V, VSS= 0V, VCM= V

DD

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

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,

Rail-to-Rail I/O Op Amps

_______________________________________________________________________________________

7

60

-40
1 100 1k 10k 100k 1M

GAIN AND PHASE vs. FREQUENCY

(C

L

= 0pF)

-20

MAX4162-22

FREQUENCY (Hz)

GAIN (dB)

PHASE (degrees)

0

20

40

180

-180

-108

-36

36

108

144

-144

-72

0

72

RL = 100kΩ
C

L

= 0pF

A

V

= +1000

GAIN

PHASE

60

-40
1 100 1k 10k 100k 1M

GAIN AND PHASE vs. FREQUENCY

(C

L

= 500pF)

-20

MAX4162-23

FREQUENCY (Hz)

GAIN (dB)

PHASE (degrees)

0

20

40

180

-180

-108

-36

36

108

144

-144

-72

0

72

RL = 100kΩ
C

L

= 500pF

A

V

= +1000

GAIN

PHASE

60

-40
1 100 1k 10k 100k 1M

GAIN AND PHASE vs. FREQUENCY

(C

L

= 0.01µF)

-20

MAX4162-24

FREQUENCY (Hz)

GAIN (dB)

PHASE (degrees)

0

20

40

180

-180

-108

-36

36

108

144

-144

-72

0

72

RL = 100kΩ
C

L

= 0.01µF

A

V

= +1000

GAIN

PHASE

0.01

0.1

1

1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5

5.0

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT VOLTAGE SWING

MAX4162-21c

PEAK-TO-PEAK OUTPUT VOLTAGE SWING (V)

THD + NOISE (%)

f = 5kHz

AV = +1
R

L

= 100kΩ

f = 1kHz

____________________________Typical Operating Characteristics (continued)

(VDD= +5V, VSS= 0V, VCM= V

DD

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

IN

(50mV/

div)

OUT

(50mV/

div)

NONINVERTING

SMALL-SIGNAL PULSE RESPONSE

(V

DD

= 3V, CL = 0pF)

MAX4162-25

TIME (100µs/div)

VDD = 3V, VIN = 100mV, RL = 100kΩ to V

DD

/ 2,

C

L

= 0pF

IN

(50mV/

div)

OUT

(50mV/

div)

NONINVERTING

SMALL-SIGNAL PULSE RESPONSE

(V

DD

= 3V, CL = 1500pF)

MAX4162-26

TIME (100µs/div)

VDD = 3V, VIN = 100mV, RL = 100kΩ to V

DD

/ 2,

C

L

= 1500pF

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,
Rail-to-Rail I/O Op Amps

8 _______________________________________________________________________________________

IN

(2V/

div)

OUT
(2V/

div)

NONINVERTING

LARGE-SIGNAL PULSE RESPONSE

(V

DD

= 5V, CL = 0pF)

MAX4162-31

TIME (100µs/div)

VDD = 5V, VIN = 4V, RL = 100kΩ to V

DD

/ 2,

C

L

= 0pF

____________________________Typical Operating Characteristics (continued)

(VDD= +5V, VSS= 0V, VCM= V

DD

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

IN

(50mV/

div)

OUT

(50mV/

div)

NONINVERTING

SMALL-SIGNAL PULSE RESPONSE

(V

DD

= 5V, CL = 1500pF)

MAX4162-28

TIME (100µs)

VDD = 5V, VIN = 100mV, RL = 100kΩ to V

DD

/ 2,

C

L

= 1500pF

IN

(1V/

div)

OUT
(1V/

div)

NONINVERTING

LARGE-SIGNAL PULSE RESPONSE

(V

DD

= 3V, CL = 0pF)

MAX4162-29

TIME (100µs/div)

VDD = 3V, VIN = 2V, RL = 100kΩ to V

DD

/ 2,

C

L

= 0pF

IN

(1V/

div)

OUT
(1V/

div)

NONINVERTING

LARGE-SIGNAL PULSE RESPONSE

(V

DD

= 3V, CL = 1500pF)

MAX4162-30

TIME (100µs/div)

VDD = 3V, VIN = 2V, RL = 100kΩ to V

DD

/ 2,

C

L

= 1500pF

IN

(50mV/

div)

OUT

(50mV/

div)

NONINVERTING

SMALL-SIGNAL PULSE RESPONSE

(V

DD

= 5V, CL = 0pF)

MAX4162-27

TIME (100µs/div)

VDD = 5V, VIN = 100mV, RL = 100kΩ to V

DD

/ 2,

C

L

= 0pF

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,

Rail-to-Rail I/O Op Amps

_______________________________________________________________________________________ 9

______________________________________________________________Pin Description

SO

1, 5, 8

3
4

—

7

6

SOT23-5

—

3
2

—

5

1

____________________________Typical Operating Characteristics (continued)

(VDD= +5V, VSS= 0V, VCM= V

DD

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

MAX4162

MAX4163
SO/µMAX

—

—

—

4

8
1

MAX4164

SO

—

11
—

4
1

No Connection. Not internally connected.

— Amplifier Noninverting Input

Negative Power Supply
Amplifier Output
Positive Power Supply
Amplifier A Output

N.C.

IN+
V

SS

OUT

V

DD

OUTA

INA-— Amplifier A Inverting Input— 2 2

IN-2 Amplifier Inverting Input4 — —

INA+— Amplifier A Noninverting Input— 3 3
INB+— Amplifier B Noninverting Input— 5 5

INB-— Amplifier B Inverting Input— 6 6

OUTB— Amplifier B Output— 7 7

OUTC— Amplifier C Output— — 8

INC-— Amplifier C Inverting Input— — 9
INC+— Amplifier C Noninverting Input— — 10
IND+— Amplifier D Noninverting Input— — 12

IND-— Amplifier D Inverting Input— — 13

OUTD— Amplifier D Output— — 14

NAME FUNCTION

PIN

LARGE-SIGNAL PULSE RESPONSE

(V

DD

IN

(2V/

div)

OUT
(2V/

div)

VDD = 5V, VIN = 4V, RL = 100kΩ to V

= 1500pF

C

L

NONINVERTING

= 5V, CL = 1500pF)

TIME (100µs/div)

DD

MAX4162-32

/ 2,

MAX4163/MAX4164

CROSSTALK vs. FREQUENCY

0

-20

-40

-60

-80

-100

CROSSTALK (dB)

-120

-140

-160

0.1 1 10 100 1000
FREQUENCY (kHz)

MAX4162-40

__________Applications Information

Rail-to-Rail Inputs and Outputs

The MAX4162/MAX4163/MAX4164 input common-mode
range extends 250mV

beyond

each of the supply rails,
providing a substantial increase in dynamic range over
other op amps (even many of those referred to as rail-to­rail). Although the minimum operating voltage is speci­fied at 2.7V, the devices typically provide full rail-to-rail
operation below 2.0V (Figure 1). These amplifiers do not
suffer from midswing common-mode-rejection degrada-

tion or crossover nonlinearity often encountered in other
rail-to-rail op amps. Extremely low, 1.0pA input bias cur­rent makes these devices ideal for applications such as
pH probes, electrometers, and ionization detectors.
They are also protected against phase reversal (inferred
from CMRR test) and latchup for input signals extending
beyond the supply rails. The output stage achieves a
lower output impedance than traditional rail-to-rail out­put stages, providing an output voltage range that typi­cally swings within 150mV of the supply rails for 1mA
loads. This architecture also maintains high open-loop
gain and output swing while driving substantial loads.

Output Loading and Stability

These devices drive 1mA loads to within 150mV of the
supply rails while consuming only 25µA of quiescent
current. Internal compensation allows these amplifiers to
remain unity-gain stable while driving any capacitive
load (Figure 2).

Internal Charge Pump

An internal charge pump provides two internal supplies
typically 2V beyond each rail. These internal rails allow
the MAX4162/MAX4163/MAX4164 to achieve true rail­to-rail inputs and outputs, while providing excellent
common-mode rejection, power-supply rejection ratios,
and gain linearity.

These charge pumps require no external components,
and in most applications are entirely transparent to the
user. Two characteristics may be visible to the user,
depending on the application:

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,
Rail-to-Rail I/O Op Amps

10 ______________________________________________________________________________________

IN

(200mV/

div)

500mV

0mV

500mV

0mV

OUT

(200mV/

div)

LARGE CAPACITIVE-LOAD DRIVE

MAX4162-36

TIME (5µs/div)

AV = +1, CL = 1µF, RL = 100kΩ

Figure 2. Large Capacitive-Load Drive

IN

(0.667V/

div)

2V

0V
2V

0V

OUT

(0.667V/

div)

RAIL-TO-RAIL

INPUT/OUTPUT VOLTAGE RANGE

(V

DD

= 2V)

MAX4162-34

TIME (200µs/div)

VDD = 2V, V

PP

= 2V, f = 1kHz, RL = 10kΩ

Figure 1. Rail-to-Rail I/O: a) VDD= 3V; b) VDD= 2V

IN

(1V/

div)

3V

0V
3V

0V

OUT

(1V/

div)

RAIL-TO-RAIL

INPUT/OUTPUT VOLTAGE RANGE

(V

DD

= 3V)

MAX4162-35

TIME (200µs/div)

VDD = 3V, VPP = 3V, f = 1kHz, RL = 10kΩ

a)

b)

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,

Rail-to-Rail I/O Op Amps

______________________________________________________________________________________ 11

1) The on-board charge pumps generate a small
amount of 700kHz switching noise at the op amp’s
output. The amplitude of this noise is typically
100µVp-p. The noise is not referred to the input, and
is independent of amplifier gain. The charge-pump
switching frequency is well beyond the amplifier’s
200kHz bandwidth, and is therefore unnoticeable in
most applications.

2) The charge pumps typically require up to 20µs on
power-up to fully energize the internal supply rails
(Figure 3).

Power Supplies and Layout

The MAX4162/MAX4163/MAX4164 are guaranteed to
operate from a single +2.7V to +10.0V power supply, but
full rail-to-rail operation typically extends below 2V. For
single-supply operation, bypass the power supply with a
1µF capacitor in parallel with a 0.1µF ceramic capacitor.
If operating from dual supplies, bypass each supply to
ground.

Good layout improves performance by decreasing the
amount of stray capacitance at the op amp’s inputs and
output. To decrease stray capacitance, minimize both
trace and external component lead lengths, and place
external components close to the op amp’s pins.

IN

(1.5V/

div)

3V

0V

1.5V

0V

OUT

(750mV/

div)

POWER-UP TRANSIENT

(V

DD

= 3V)

MAX4162-38

TIME (100µs/div)

VDD = 3V, VIN = V

DD

/ 2, RL = 10kΩ, CL = 1500pF

Figure 3. Power-Up Transient: a) VDD= 3V; b) VDD= 5V

a)

b)

_____________________________________________Pin Configurations (continued)

TOP VIEW

INB-

INB+

V

SS

1
2

8

7

V

DD

OUTB

INA­INA+

OUTA

SO/µMAX

3

4

6

5

MAX4163

14
13
12
11
10

9
8

1
2
3
4
5
6
7

OUTD
IND­IND+
V

SS

V

DD

INA+

INA-

OUTA

MAX4164

INC+
INC­OUTC

OUTB

INB-

INB+

SO

(2V/

div)

OUT
(1V/

div)

IN

POWER-UP TRANSIENT

= 5V)

(V

DD

MAX4162-39

5V

0V

2.5V

0V

VDD = 5V, VIN = V

TIME (100µs/div)

/ 2, RL = 10kΩ, CL = 1500pF

DD

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.

12

__________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 [phone]

© 1997 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

MAX4162/MAX4163/MAX4164

SOT23, Micropower, Single-Supply,
Rail-to-Rail I/O Op Amps

4.0 ±0.1

0.30 ±0.05

0.8 ±0.05

0.30R MAX.

Bo

Ko

2.2 ±0.1

0.5 RADIUS
TYPICAL

A0

4.0 ±0.1

2.0 ±0.05

1.5 +0.1/-0.0 DIAMETER

1.75 ±0.1

1.0 ±0.1

A

8.0 ±0.3

3.5 ±0.05

1.0 MINIMUM

A

Ao = 3.1mm ±0.1
Bo = 2.7mm ±0.1
Ko = 1.2mm ±0.1

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

__________________________________________________Tape-and-Reel Information

________________________________________________________Package Information

___________________Chip Information

MAX4162 TRANSISTOR COUNT: 291
MAX4163 TRANSISTOR COUNT: 496
MAX4164 TRANSISTOR COUNT: 992

SOT5L.EPS