19-1087; Rev 1; 8/97
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
General Description
The MAX4122–MAX4129 family of operational amplifiers
combines wide bandwidth and excellent DC accuracy with
Rail-to-Rail
®
operation at the inputs and outputs. These
devices require only 650µA per amplifier, and operate from
either a single supply (+2.7V to +6.5V) or dual supplies
(±1.35V to ±3.25V) with a common-mode voltage range
that extends 250mV beyond V
EE
and V
CC
. They are capa-
ble of driving 250Ω loads. The MAX4122/MAX4123/
MAX4126/MAX4127/MAX4129 have a 5MHz gain band-
width product, while the decompensated MAX4124/
MAX4125/MAX4128 (stable at closed-looped gains of
10 or greater) have a 25MHz gain bandwidth product. In
addition, the MAX4123/MAX4125/MAX4127 feature a
shutdown mode in which the outputs are placed in a
high-impedance state and the supply current is reduced
to only 25µA per amplifier.
With their rail-to-rail input common-mode range and
output swing, these amplifiers are ideal for low-voltage
single-supply operation. Although the minimum operat-
ing voltage is specified at 2.7V, the devices typically
operate down to 1.8V. In addition, low offset voltage
and high speed make them the ideal signal-condition-
ing stages for precision, low-voltage, data-acquisition
systems.
The MAX4122 and MAX4124 come in the
space-saving 5-pin SOT23-5 package.
o
5-Pin SOT23 Package (MAX4122/4)
o
+2.7V to +6.5V Single-Supply Operation
o
Rail-to-Rail Input Common-Mode Voltage Range
o
Rail-to-Rail Output Voltage Swing
o
5MHz Gain-Bandwidth Product (MAX4122/3/6/7/9)
25MHz Gain-Bandwidth Product (MAX4124/5/8)
o
650µA Quiescent Current per Amplifier
o
25µA Shutdown Function (MAX4123/5/7)
o
200µV Offset Voltage
o
No Phase Reversal for Overdriven Inputs
o
Drive 250Ω Loads
o
Stable with 500pF Capacitive Loads
o
Unity-Gain Stable (MAX4122/3/6/7/9)
Stable at Gains
≥
10V/V (MAX4124/5/8)
Features
MAX4122–MAX4129
Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
5 SOT23-5
MARKING
INFO.
AAAZ
________________________Applications
Battery-Powered Instruments
Portable Equipment
Data-Acquisition Systems
Signal Conditioning
Low-Power, Low-Voltage Applications
MAX4122EUK
-40°C to +85°C
MAX4123C/D
—
0°C to +70°C Dice*
—
MAX4123ESA -40°C to +85°C 8 SO
MAX4123EUA -40°C to +85°C 8 µMAX
—
Ordering Information continued at end of data sheet.
*Dice
are specified at T
A
= +25°C, DC parameters only.
Pin Configurations appear at end of data sheet.
Selection Table
PART
MAX4122
MAX4123
MAX4124
MAX4125
MAX4126
MAX4127
MAX4128
MAX4129
BW
(MHz)
5
5
25
25
5
5
25
5
AMPS
PER
PKG.
1
1
1
1
2
2
2
4
SHUT-
DOWN
MODE
—
Yes
—
Yes
—
Yes
—
—
PIN-
PACKAGE
5 SOT23-5
8 SO/µMAX
5 SOT23-5
8 SO/µMAX
8 SO/µMAX
14 SO
8 SO/µMAX
14 SO
__________Typical Operating Circuit
+5V
MAX187
3
6
SERIAL
INTERFACE
8
7
SHDN
DOUT
SCLK
CS
V
DD
AIN
VREF
GND
1
2
MAX4123
4
5
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
MAX4122–MAX4129
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
-V
EE
).....................................................7.5V
IN+, IN-,
SHDN
Voltage ...................(V
CC
+ 0.3V) to (V
EE
- 0.3V)
Output Short-Circuit Duration (Note 1).......................Continuous
(short to either supply)
Continuous Power Dissipation (T
A
= +70°C)
5-pin SOT23-5 (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
14-pin SO (derate 8.00mW/°C above +70°C)...............640mW
Operating Temperature Range
MAX412_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
Note 1:
Provided that the maximum package power-dissipation rating is met.
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.
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +6.5V, V
EE
= 0V, V
CM
= 0V, V
OUT
= V
CC
/2, R
L
tied to V
CC
/2,
SHDN
≥
2V (or open),
T
A
= +25°C,
unless
otherwise noted.)
PARAMETER
CONDITIONS
MAX4123ESA/MAX4125ESA
MAX4122EUK/MAX4124EUK
Input Offset Voltage
V
CM
=
V
EE
to V
CC
MAX4123EUA/MAX4125EUA
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4126EUA/MAX4128EUA
MAX4129ESD
Input Bias Current
Input Offset Current
Differential Input Resistance
Common-Mode Input
Voltage Range
MAX4123ESA/MAX4125ESA
(V
EE
-
0.25) <
V
CM
<
(V
CC
+
0.25V)
MAX4122EUK/MAX4124EUK
MAX4123EUA/MAX4125EUA
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4126EUA/MAX4128EUA
MAX4129ESD
Power-Supply Rejection Ratio
Output Resistance
Off-Leakage Current
V
CC
= 2.7V to 6.5V
A
V
= 1
SHDN
< 0.8V, V
OUT
= 0V to V
CC
V
CC
= 2.7V
Large-Signal Voltage Gain
V
CC
= 5V
V
OUT
= 0.25V to 2.45V, R
L
= 100kΩ
V
OUT
= 0.4V to 2.3V, R
L
= 250Ω
V
OUT
= 0.25V to 4.75V, R
L
= 100kΩ
V
OUT
= 0.4V to 4.6V, R
L
= 250Ω
92
72
94
75
V
CM
= V
EE
to V
CC
V
CM
= V
EE
to V
CC
-1.5V < V
DIFF
< 1.5V
V
EE
-
0.25
78
67
68
74
66
64
78
98
90
88
94
86
84
100
0.1
±0.1
104
80
106
84
dB
±1
dB
Ω
µA
dB
MIN
TYP
±0.20
±0.35
±0.35
±0.25
±0.40
±0.35
±50
±1
500
V
CC
+
0.25
MAX
±0.60
±1.50
±1.20
±0.75
±1.50
±1.50
±150
±12
nA
nA
kΩ
V
mV
UNITS
Common-Mode Rejection Ratio
2
_______________________________________________________________________________________
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.7V to +6.5V, V
EE
= 0V, V
CM
= 0V, V
OUT
= V
CC
/2, R
L
tied to V
CC
/2,
SHDN
≥
2V (or open),
T
A
= +25°C,
unless
otherwise noted.)
PARAMETER
MAX4122/
MAX4123/
MAX4124/
MAX4125
Output Voltage Swing
MAX4126/
MAX4127/
MAX4128/
MAX4129
Output Short-Circuit Current
SHDN
Logic Threshold
SHDN
Input Current
Operating Supply-Voltage Range
Supply Current per Amplifier
Shutdown Supply Current
per Amplifier
V
CM
= V
OUT
= V
CC
/2
SHDN
> 0.8V,
MAX4123/MAX4125/MAX4127
V
CC
= 2.7V
V
CC
= 5V
V
CC
= 2.7V
V
CC
= 5V
MAX4123/MAX4125/MAX4127
MAX4123/MAX4125/MAX4127
2.7
650
725
25
40
Low
High
2.0
±1
±3
6.5
750
825
40
60
R
L
= 100kΩ
R
L
= 250Ω
CONDITIONS
R
L
= 100kΩ
R
L
= 250Ω
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
V
OL
- V
EE
MIN
TYP
12
20
240
125
15
25
280
180
50
0.8
MAX
20
35
290
170
30
40
330
230
mA
V
µA
V
µA
µA
mV
UNITS
MAX4122–MAX4129
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +6.5V, V
EE
= 0V, V
CM
= 0V, V
OUT
= V
CC
/2, R
L
tied to V
CC
/2,
SHDN
≥
2V (or open),
T
A
= -40°C to +85°C,
unless
otherwise noted.)
PARAMETER
CONDITIONS
MAX4123ESA/MAX4125ESA
MAX4122EUK/MAX4124EUK
Input Offset Voltage
V
CM
=
V
EE
to V
CC
MAX4123EUA/MAX4125EUA
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4126EUA/MAX4128EUA
MAX4129ESD
Input Offset Voltage Tempco
Input Bias Current
Input Offset Current
Common-Mode Input
Voltage Range
MAX4123ESA/MAX4125ESA
(V
EE
-
0.2V) <
V
CM
<
(V
CC
+
0.2V)
MAX4122EUK/MAX4124EUK
MAX4123EUA/MAX4125EUA
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4126EUA/MAX4128EUA
MAX4129ESD
V
CM
= V
EE
to V
CC
V
CM
= V
EE
to V
CC
V
EE
-
0.20
76
62
60
74
58
60
3
dB
±2
±160
±18
V
CC
+
0.20
MIN
TYP
MAX
±0.75
±3.50
±4.40
±0.95
±4.70
±4.00
µV/°C
nA
nA
V
mV
UNITS
Common-Mode Rejection Ratio
_______________________________________________________________________________________
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
MAX4122–MAX4129
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.7V to +6.5V, V
EE
= 0V, V
CM
= 0V, V
OUT
= V
CC
/2, R
L
tied to V
CC
/2,
SHDN
≥
2V (or open),
T
A
= -40°C to +85°C,
unless
otherwise noted.)
PARAMETER
Power-Supply Rejection Ratio
Off-Leakage Current
V
CC
= 2.7V to 6.5V
SHDN
< 0.8V, V
OUT
= 0V to V
CC
V
CC
= 2.7V
Large-Signal Voltage Gain
V
CC
= 5V
MAX4122/
MAX4123/
MAX4124/
MAX4125
Output Voltage Swing
MAX4126/
MAX4127/
MAX4128/
MAX4129
SHDN
Logic Threshold
SHDN
Input Current
Operating Supply-Voltage Range
Supply Current per Amplifier
Shutdown Supply Current
per Amplifier
V
CM
= V
OUT
= V
CC
/2
SHDN
< 0.8V,
MAX4123/MAX4125/MAX4127
V
CC
= 2.7V
V
CC
= 5V
V
CC
= 2.7V
V
CC
= 5V
R
L
= 100kΩ
R
L
= 250Ω
V
OUT
= 0.25V to 2.45V, R
L
= 100kΩ
V
OUT
= 0.4V to 2.3V, R
L
= 250Ω
V
OUT
= 0.25V to 4.75V, R
L
= 100kΩ
V
OUT
= 0.4V to 4.6V, R
L
= 250Ω
R
L
= 100kΩ
R
L
= 250Ω
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
V
OL
- V
EE
Low
High
2.0
±3
2.7
6.5
775
850
50
70
84
66
86
68
25
40
300
190
35
50
350
250
0.8
V
µA
V
µA
µA
mV
dB
CONDITIONS
MIN
74
±12
TYP
MAX
UNITS
dB
µA
MAX4123/MAX4125/MAX4127
MAX4123/MAX4125/MAX4127
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +6.5V, V
EE
= 0V,
SHDN
≥
2V (or open),
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
Gain-Bandwidth Product
Phase Margin
Gain Margin
Total Harmonic Distortion
Slew Rate
Settling Time to 0.01%
Turn-On Time
4
CONDITIONS
MAX4122/23/26/27/29
MAX4124/25/28 (A
V
≥
10)
MAX4122/23/26/27/29
MAX4124/25/28 (A
V
≥
10)
MAX4122/23/26/27/29
MAX4124/25/28 (A
V
≥
10)
f = 10kHz, V
OUT
= 2Vp-p,
MAX4122/23/26/27/29 (A
V
= 1)
MAX4122/23/26/27/29
MAX4124/25/28 (A
V
≥
10)
MAX4122/23/26/27/29 (A
V
= 1), V
OUT
= 2V step
MAX4124/25/28 (A
V
≥
10), V
OUT
= 2V step
V
CC
= 0V to 3V step, V
OUT
= V
CC
/2
MIN
TYP
5
25
64
60
12
10
0.003
2
10
2.0
1.3
1
MAX
UNITS
MHz
degrees
dB
%
V/µs
µs
µs
_______________________________________________________________________________________
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
AC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.7V to +6.5V, V
EE
= 0V,
SHDN
≥
2V (or open),
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
SHDN
Delay
Input Capacitance
Input Noise Voltage Density
Input Noise Current Density
Amp-Amp Isolation
Capacitive Load Stability
f = 1kHz
f = 1kHz
MAX4126/27/28/29
MAX4122/23/26/27/29 (A
V
= 1)
MAX4124/25/28 (A
V
≥
10)
CONDITIONS
V
CC
= 3V, V
OUT
= V
CC
/2,
MAX4123/25/27
Enable
Disable
MIN
TYP
1
0.2
3
22
0.4
135
500
500
MAX
UNITS
µs
pF
nV/√Hz
pA/√Hz
dB
pF
MAX4122–MAX4129
__________________________________________Typical Operating Characteristics
(V
CC
= +5V, V
EE
= 0V, V
CM
= V
CC
/2, T
A
= +25°C, unless otherwise noted.)
MAX4322/26/29
GAIN AND PHASE vs. FREQUENCY
60
A
V
= +1000
NO LOAD
MAX4322/26/29-01
MAX4122/23/26/27/29
GAIN AND PHASE vs. FREQUENCY
(WITH C
LOAD
)
180
144
60
A
V
= +1000
R
L
=
∞
C
L
= 500pF
MAX4122/29-02
MAX4122/23/26/27/29
POWER-SUPPLY REJECTION
vs. FREQUENCY
144
0
-20
PHASE (DEGREES)
PSR (dB)
-40
-60
-80
-100
10
100
1k
10k
100k
1M
10M
100M
A
V
= +1
MAX4122/29-03
180
40
108
PHASE (DEGREES)
GAIN
72
36
0
40
GAIN
108
72
36
0
GAIN (dB)
0
PHASE
-36
-72
GAIN (dB)
20
20
0
PHASE
-36
-72
-108
-144
-20
-108
-144
-20
-40
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
-180
100M
-40
100
1k
10k
100k
1M
10M
-180
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
MAX4124/25/28
GAIN AND PHASE vs. FREQUENCY
60
A
V
= +1000
NO LOAD
MAX14122/29-04
144
40
GAIN
108
PHASE (DEGREES)
72
GAIN (dB)
20
PHASE
36
0
0
-36
-72
-20
-108
-144
-40
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
-180
-40
100
1k
10k
100k
1M
10M
-20
40
A
V
= +1000
R
L
=
∞
C
L
= 500 pF
GAIN
144
108
PHASE (DEGREES)
72
36
PHASE
0
-36
-72
-108
-144
-180
100M
0
-20
PSR (dB)
-40
-60
-80
-100
10
A
V
= +10
GAIN (dB)
20
0
100
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
_______________________________________________________________________________________
5
MAX4122/29-06
180
60
MAX4124/25/28
GAIN AND PHASE vs. FREQUENCY
(WITH C
LOAD
)
MAX4122/29-05
MAX4124/25/28
POWER-SUPPLY REJECTION
vs. FREQUENCY
180
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