General Description
The MAX4122MAX4129 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 650A 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 250
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 25A 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.
________________________Applications
Battery-Powered Instruments
Portable Equipment
Data-Acquisition Systems
Signal Conditioning
Low-Power, Low-Voltage Applications
Features
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
650A Quiescent Current per Amplifier
o
25A Shutdown Function (MAX4123/5/7)
o
200V Offset Voltage
o
No Phase Reversal for Overdriven Inputs
o
Drive 250
Loads
o
Stable with 500pF Capacitive Loads
o
Unity-Gain Stable (MAX4122/3/6/7/9)
Stable at Gains
10V/V (MAX4124/5/8)
MAX4122MAX4129
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
________________________________________________________________
Maxim Integrated Products
1
MAX187
MAX4123
SHDN
3
1
2
4
5
6
8
7
V
DD
+5V
AIN
VREF
GND
DOUT
SERIAL
INTERFACE
SCLK
CS
__________Typical Operating Circuit
Selection Table
19-1087; Rev 1; 8/97
PART
MAX4122
EUK
MAX4123
C/D
MAX4123ESA
-40C to +85C
0C to +70C
-40C to +85C
TEMP. RANGE
PIN-
PACKAGE
5 SOT23-5
Dice*
8 SO
Ordering Information
Ordering Information continued at end of data sheet.
*
Dice are specified at T
A
= +25C, DC parameters only.
Pin Configurations appear at end of data sheet.
MARKING
INFO.
AAAZ
--
--
BW
(MHz)
AMPS
PER
PKG.
MAX4122
5
1
MAX4123
5
1
PART
MAX4124
25
1
MAX4125
25
1
MAX4126
5
2
MAX4127
5
2
MAX4128
25
2
MAX4129
5
4
SHUT-
DOWN
MODE
--
Yes
--
Yes
--
Yes
--
--
PIN-
PACKAGE
5 SOT23-5
8 SO/MAX
5 SOT23-5
8 SO/MAX
8 SO/MAX
14 SO
8 SO/MAX
14 SO
MAX4123EUA -40C to +85C
8 MAX
--
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.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX4122MAX4129
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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
= +25C
, 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 (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
= +70C)
5-pin SOT23-5 (derate 7.1mW/C above +70C) .........571mW
8-pin SO (derate 5.88mW/C above +70C).................471mW
8-pin MAX (derate 4.10mW/C above +70C) ............330mW
14-pin SO (derate 8.00mW/C above +70C)...............640mW
Operating Temperature Range
MAX412_E__ ....................................................-40C to +85C
Maximum Junction Temperature .....................................+150C
Storage Temperature Range .............................-65C to +160C
Lead Temperature (soldering, 10sec) .............................+300C
V
CM
= V
EE
to V
CC
MAX4123ESA/MAX4125ESA
CONDITIONS
nA
1
12
Input Offset Current
nA
50
150
Input Bias Current
72
80
0.1
Output Resistance
k
500
Differential Input Resistance
78
98
dB
78
100
Power-Supply Rejection Ratio
UNITS
MIN
TYP
MAX
PARAMETER
V
OUT
= 0.4V to 4.6V, R
L
= 250
75
84
dB
Large-Signal Voltage Gain
V
V
EE
-
V
CC
+
0.25
0.25
Common-Mode Input
Voltage Range
Note 1:
Provided that the maximum package power-dissipation rating is met.
MAX4122EUK/MAX4124EUK
0.35
1.50
MAX4123EUA/MAX4125EUA
0.35
1.20
0.20
0.60
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4126EUA/MAX4128EUA
0.40
1.50
MAX4129ESD
0.35
1.50
Input Offset Voltage
0.25
0.75
V
CM
=
V
EE
to V
CC
MAX4123ESA/MAX4125ESA
mV
V
CM
= V
EE
to V
CC
-1.5V < V
DIFF
< 1.5V
V
CC
= 2.7V to 6.5V
A
V
= 1
SHDN < 0.8V, V
OUT
= 0V to V
CC
A
0.1
1
Off-Leakage Current
MAX4122EUK/MAX4124EUK
(V
EE
-
0.25) <
V
CM
<
(V
CC
+
0.25V)
67
90
Common-Mode Rejection Ratio
MAX4129ESD
MAX4126EUA/MAX4128EUA
64
84
dB
66
86
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4123EUA/MAX4125EUA
74
94
68
88
V
CC
= 5V
V
OUT
= 0.4V to 2.3V, R
L
= 250
V
OUT
= 0.25V to 2.45V, R
L
= 100k
V
OUT
= 0.25V to 4.75V, R
L
= 100k
V
CC
= 2.7V
92
104
94
106
MAX4122MAX4129
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
_______________________________________________________________________________________
3
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
= -40C to +85C
, unless
otherwise noted.)
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
= +25C
, unless
otherwise noted.)
R
L
= 100k
CONDITIONS
20
35
Low
V
2.7
6.5
Operating Supply-Voltage Range
SHDN > 0.8V,
MAX4123/MAX4125/MAX4127
240
290
12
20
V
OL
- V
EE
125
170
MAX4122/
MAX4123/
MAX4124/
MAX4125
V
0.8
mA
50
Output Short-Circuit Current
A
40
60
Shutdown Supply Current
per Amplifier
UNITS
MIN
TYP
MAX
PARAMETER
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
R
L
= 250
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
R
L
= 250
R
L
= 100k
25
40
mV
280
330
15
30
V
OL
- V
EE
Output Voltage Swing
180
230
MAX4126/
MAX4127/
MAX4128/
MAX4129
High
2.0
SHDN Logic Threshold
MAX4123/MAX4125/MAX4127
V
CC
= 5V
MAX4123/MAX4125/MAX4127
A
1
3
SHDN Input Current
V
CC
= 2.7V
V
CM
= V
OUT
= V
CC
/2
A
650
750
V
CC
= 5V
725
825
Supply Current per Amplifier
V
CC
= 2.7V
25
40
MAX4122EUK/MAX4124EUK
(V
EE
-
0.2V) <
V
CM
<
(V
CC
+
0.2V)
MAX4123ESA/MAX4125ESA
MAX4129ESD
MAX4122EUK/MAX4124EUK
MAX4123ESA/MAX4125ESA
CONDITIONS
3.50
62
V
CM
= V
EE
to V
CC
MAX4123EUA/MAX4125EUA
V
V
EE
-
V
CC
+
0.20
0.20
Common-Mode Input
Voltage Range
mV
4.40
0.75
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4126EUA/MAX4128EUA
4.70
MAX4129ESD
Common-Mode Rejection Ratio
4.00
Input Offset Voltage
0.95
V
CM
=
V
EE
to V
CC
nA
18
MAX4126EUA/MAX4128EUA
Input Offset Current
V/C
2
60
dB
58
MAX4126ESA/MAX4127ESD/MAX4128ESA
Input Offset Voltage Tempco
MAX4123EUA/MAX4125EUA
74
60
76
UNITS
MIN
TYP
MAX
PARAMETER
V
CM
= V
EE
to V
CC
nA
160
Input Bias Current
MAX4122MAX4129
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
4
_______________________________________________________________________________________
86
Large-Signal Voltage Gain
68
V
OUT
= 0.25V to 4.75V, R
L
= 100k
V
OUT
= 0.4V to 4.6V, R
L
= 250
V
CC
= 5V
84
dB
66
V
OUT
= 0.25V to 2.45V, R
L
= 100k
V
OUT
= 0.4V to 2.3V, R
L
= 250
V
CC
= 2.7V
Off-Leakage Current
12
A
SHDN < 0.8V, V
OUT
= 0V to V
CC
MAX4122/
MAX4123/
MAX4124/
MAX4125
190
V
OL
- V
EE
25
300
MAX4126/
MAX4127/
MAX4128/
MAX4129
250
Output Voltage Swing
V
OL
- V
EE
35
350
mV
50
R
L
= 100k
R
L
= 250
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
40
R
L
= 100k
R
L
= 250
V
CC
- V
OH
V
OL
- V
EE
V
CC
- V
OH
PARAMETER
MIN
TYP
MAX
UNITS
Shutdown Supply Current
per Amplifier
70
A
Power-Supply Rejection Ratio
74
dB
0.8
V
SHDN < 0.8V,
MAX4123/MAX4125/MAX4127
Operating Supply-Voltage Range
2.7
6.5
V
775
A
V
CM
= V
OUT
= V
CC
/2
V
CC
= 2.7V
SHDN Input Current
Low
3
CONDITIONS
A
50
MAX4123/MAX4125/MAX4127
V
CC
= 2.7V to 6.5V
V
CC
= 2.7V
V
CC
= 5V
MAX4123/MAX4125/MAX4127
Supply Current per Amplifier
SHDN Logic Threshold
850
2.0
High
V
CC
= 5V
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
= -40C to +85C
, unless
otherwise noted.)
f = 10kHz, V
OUT
= 2Vp-p,
MAX4122/23/26/27/29 (A
V
= 1)
MAX4124/25/28 (A
V
10), V
OUT
= 2V step
MAX4122/23/26/27/29
V
CC
= 0V to 3V step, V
OUT
= V
CC
/2
64
MAX4124/25/28 (A
V
10)
MAX4124/25/28 (A
V
10)
degrees
MAX4122/23/26/27/29 (A
V
= 1), V
OUT
= 2V step
MAX4122/23/26/27/29
CONDITIONS
MAX4122/23/26/27/29
s
1.3
60
5
Phase Margin
MAX4124/25/28 (A
V
10)
MAX4122/23/26/27/29
MHz
25
Gain-Bandwidth Product
12
MAX4124/25/28 (A
V
10)
%
0.003
dB
Total Harmonic Distortion
10
Gain Margin
Settling Time to 0.01%
2.0
s
1
Turn-On Time
V/s
10
Slew Rate
2
UNITS
MIN
TYP
MAX
PARAMETER
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +6.5V, V
EE
= 0V, SHDN
2V (or open),
T
A
= +25C
, unless otherwise noted.)
MAX4122MAX4129
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
_______________________________________________________________________________________
5
60
-40
100
1k
10k
1M
10M
100k
100M
MAX4322/26/29
GAIN AND PHASE vs. FREQUENCY
-20
FREQUENCY (Hz)
GAIN (dB)
0
20
40
PHASE
GAIN
A
V
= +1000
NO LOAD
PHASE (DEGREES)
180
144
72
0
-72
-144
-180
-108
-36
36
108
MAX4322/26/29-01
60
-40
100
1k
10k
1M
10M
100k
100M
MAX4122/23/26/27/29
GAIN AND PHASE vs. FREQUENCY
(WITH C
LOAD
)
-20
MAX4122/29-02
FREQUENCY (Hz)
GAIN (dB)
0
20
40
PHASE
GAIN
A
V
= +1000
R
L
=
C
L
= 500pF
PHASE (DEGREES)
180
144
72
0
-72
-144
-180
-108
-36
36
108
0
-100
10
100
1k
100k
1M
10M
10k
100M
MAX4122/23/26/27/29
POWER-SUPPLY REJECTION
vs. FREQUENCY
-80
MAX4122/29-03
FREQUENCY (Hz)
PSR (dB)
-60
-40
-20
A
V
= +1
__________________________________________Typical Operating Characteristics
(V
CC
= +5V, V
EE
= 0V, V
CM
= V
CC
/2, T
A
= +25C, unless otherwise noted.)
AC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.7V to +6.5V, V
EE
= 0V, SHDN
2V (or open),
T
A
= +25C
, unless otherwise noted.)
MAX4124/25/28 (A
V
10)
MAX4122/23/26/27/29 (A
V
= 1)
MAX4126/27/28/29
f = 1kHz
f = 1kHz
V
CC
= 3V, V
OUT
= V
CC
/2,
MAX4123/25/27
CONDITIONS
pF
500
Capacitive Load Stability
500
dB
135
Amp-Amp Isolation
pA/
Hz
0.4
Input Noise Current Density
nV/
Hz
22
Input Noise Voltage Density
pF
3
Input Capacitance
s
0.2
SHDN Delay
1
UNITS
MIN
TYP
MAX
PARAMETER
Enable
Disable
60
-40
100
1k
10k
100k
1M
10M
MAX4124/25/28
GAIN AND PHASE vs. FREQUENCY
-20
MAX14122/29-04
FREQUENCY (Hz)
GAIN (dB)
PHASE (DEGREES)
0
20
40
180
144
-180
-144
-108
-72
-36
36
0
108
72
A
V
= +1000
NO LOAD
GAIN
PHASE
60
-40
100
1k
10k
1M
10M
100k
100M
MAX4124/25/28
GAIN AND PHASE vs. FREQUENCY
(WITH C
LOAD
)
-20
MAX4122/29-05
FREQUENCY (Hz)
GAIN (dB)
0
20
40
PHASE
GAIN
A
V
= +1000
R
L
=
C
L
= 500 pF
PHASE (DEGREES)
180
144
72
0
-72
-144
-180
-108
-36
36
108
0
-100
10
100
1k
100k
1M
10M
10k
100M
MAX4124/25/28
POWER-SUPPLY REJECTION
vs. FREQUENCY
-80
MAX4122/29-06
FREQUENCY (Hz)
PSR (dB)
-60
-40
-20
A
V
= +10
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