MAX4126ESA+T [MAXIM]
Operational Amplifier, 2 Func, 950uV Offset-Max, BIPolar, PDSO8, SO-8;
| 型号： | MAX4126ESA+T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Operational Amplifier, 2 Func, 950uV Offset-Max, BIPolar, PDSO8, SO-8 运算放大器 |
| 文件： | 总16页 (文件大小：286K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1087; Rev 1; 8/97
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
–MAX4129
Ge n e ra l De s c rip t io n
Fe a t u re s
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
♦ 5-Pin SOT23 Package (MAX4122/4)
♦ +2.7V to +6.5V Single-Supply Operation
♦ Rail-to-Rail Input Common-Mode Voltage Range
♦ Rail-to-Rail Output Voltage Swing
♦ 5MHz Gain-Bandwidth Product (MAX4122/3/6/7/9)
that extends 250mV beyond V and V . They are capa-
EE
CC
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.
25MHz Gain-Bandwidth Product (MAX4124/5/8)
♦ 650µA Quiescent Current per Amplifier
♦ 25µA Shutdown Function (MAX4123/5/7)
♦ 200µV Offset Voltage
♦ No Phase Reversal for Overdriven Inputs
♦ Drive 250Ω Loads
♦ Stable with 500pF Capacitive Loads
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.
♦ Unity-Gain Stable (MAX4122/3/6/7/9)
Stable at Gains ≥ 10V/V (MAX4124/5/8)
Ord e rin g In fo rm a t io n
PIN-
PACKAGE
MARKING
INFO.
PART
TEMP. RANGE
MAX4122EUK -40°C to +85°C 5 SOT23-5
MAX4123C/D 0°C to +70°C Dice*
AAAZ
—
________________________Ap p lic a t io n s
Battery-Powered Instruments
Portable Equipment
MAX4123ESA -40°C to +85°C 8 SO
MAX4123EUA -40°C to +85°C 8 µMAX
—
—
Data-Acquisition Systems
Ordering Information continued at end of data sheet.
*Dice are specified at T = +25°C, DC parameters only.
A
Signal Conditioning
Low-Power, Low-Voltage Applications
Pin Configurations appear at end of data sheet.
__________Typ ic a l Op e ra t in g Circ u it
S e le c t io n Ta b le
+5V
AMPS
PER
PKG.
SHUT-
DOWN
MODE
BW
(MHz)
PIN-
PACKAGE
PART
MAX187
MAX4122
MAX4123
MAX4124
MAX4125
MAX4126
MAX4127
MAX4128
MAX4129
5
5
1
1
1
1
2
2
2
4
—
Yes
—
5 SOT23-5
8 SO/µMAX
5 SOT23-5
8 SO/µMAX
8 SO/µMAX
14 SO
1
2
3
6
V
SHDN
DOUT
DD
25
25
5
AIN
MAX4123
SERIAL
INTERFACE
Yes
—
8
7
4
5
SCLK
CS
VREF
5
Yes
—
GND
25
5
8 SO/µMAX
14 SO
—
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.
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V -V ).....................................................7.5V
Operating Temperature Range
CC EE
IN+, IN-, SHDN Voltage ...................(V + 0.3V) to (V - 0.3V)
Output Short-Circuit Duration (Note 1).......................Continuous
(short to either supply)
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
CC
EE
Continuous Power Dissipation (T = +70°C)
A
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
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 = 0V, V
= 0V, V = V /2, R tied to V /2, SHDN ≥ 2V (or open), T = +25°C, unless
OUT CC L CC A
EE
CM
otherwise noted.)
–MAX4129
PARAMETER
CONDITIONS
MAX4123ESA/MAX4125ESA
MIN
TYP
±0.20
±0.35
±0.35
±0.25
±0.40
±0.35
±50
MAX
±0.60
±1.50
±1.20
±0.75
±1.50
±1.50
±150
±12
UNITS
MAX4122EUK/MAX4124EUK
MAX4123EUA/MAX4125EUA
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4126EUA/MAX4128EUA
MAX4129ESD
V
V
EE
=
CM
Input Offset Voltage
mV
to V
CC
Input Bias Current
Input Offset Current
V
CM
= V to V
CC
nA
nA
kΩ
EE
V
CM
= V to V
CC
±1
EE
Differential Input Resistance
-1.5V < V
< 1.5V
500
DIFF
Common-Mode Input
Voltage Range
V
0.25
-
V
0.25
+
EE
CC
V
MAX4123ESA/MAX4125ESA
MAX4122EUK/MAX4124EUK
MAX4123EUA/MAX4125EUA
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4126EUA/MAX4128EUA
MAX4129ESD
78
67
68
74
66
64
78
98
90
(V
0.25) <
-
EE
88
Common-Mode Rejection Ratio
V
<
+
dB
CM
94
(V
CC
0.25V)
86
84
Power-Supply Rejection Ratio
Output Resistance
V
CC
= 2.7V to 6.5V
100
0.1
±0.1
104
80
dB
Ω
A
V
= 1
Off-Leakage Current
±1
µA
SHDN < 0.8V, V
= 0V to V
CC
OUT
V
OUT
= 0.25V to 2.45V, R = 100kΩ
92
72
94
75
L
V
CC
= 2.7V
= 5V
V
OUT
= 0.4V to 2.3V, R = 250Ω
L
Large-Signal Voltage Gain
dB
V
OUT
= 0.25V to 4.75V, R = 100kΩ
106
84
L
V
CC
V
OUT
= 0.4V to 4.6V, R = 250Ω
L
2
_______________________________________________________________________________________
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
–MAX4129
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.7V to +6.5V, V = 0V, V
= 0V, V = V /2, R tied to V /2, SHDN ≥ 2V (or open), T = +25°C, unless
OUT CC L CC A
EE
CM
otherwise noted.)
PARAMETER
CONDITIONS
= 100kΩ
MIN
TYP
12
MAX
20
UNITS
V
- V
OH
CC
MAX4122/
MAX4123/
MAX4124/
MAX4125
R
R
R
R
L
L
L
L
V
OL
- V
20
35
EE
V
CC
- V
240
125
15
290
170
30
OH
= 250Ω
= 100kΩ
= 250Ω
V
OL
- V
EE
Output Voltage Swing
mV
V
CC
- V
OH
MAX4126/
MAX4127/
MAX4128/
MAX4129
V
OL
- V
25
40
EE
V
CC
- V
280
180
50
330
230
OH
V
OL
- V
EE
Output Short-Circuit Current
mA
V
Low
0.8
MAX4123/MAX4125/MAX4127
MAX4123/MAX4125/MAX4127
SHDN Logic Threshold
High
2.0
2.7
±1
±3
6.5
750
825
40
µA
V
SHDN Input Current
Operating Supply-Voltage Range
V
CC
= 2.7V
= 5V
650
725
25
Supply Current per Amplifier
V
CM
= V
= V /2
µA
µA
OUT
CC
V
CC
V
CC
= 2.7V
= 5V
Shutdown Supply Current
per Amplifier
SHDN > 0.8V,
MAX4123/MAX4125/MAX4127
V
CC
40
60
DC ELECTRICAL CHARACTERISTICS
(V = +2.7V to +6.5V, V = 0V, V
= 0V, V = V /2, R tied to V /2, SHDN ≥ 2V (or open), T = -40°C to +85°C, unless
OUT CC L CC A
CC
EE
CM
otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
±0.75
±3.50
±4.40
±0.95
±4.70
±4.00
UNITS
MAX4123ESA/MAX4125ESA
MAX4122EUK/MAX4124EUK
MAX4123EUA/MAX4125EUA
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4126EUA/MAX4128EUA
MAX4129ESD
V
V
EE
=
CM
Input Offset Voltage
mV
to V
CC
Input Offset Voltage Tempco
Input Bias Current
±2
µV/°C
nA
V
= V to V
CC
±160
±18
CM
EE
Input Offset Current
V
CM
= V to V
CC
nA
EE
Common-Mode Input
Voltage Range
V
0.20
-
V
0.20
+
EE
CC
V
MAX4123ESA/MAX4125ESA
MAX4122EUK/MAX4124EUK
MAX4123EUA/MAX4125EUA
MAX4126ESA/MAX4127ESD/MAX4128ESA
MAX4126EUA/MAX4128EUA
MAX4129ESD
76
62
60
74
58
60
(V
0.2V) <
-
EE
Common-Mode Rejection Ratio
V
<
+
dB
CM
(V
CC
0.2V)
_______________________________________________________________________________________
3
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
DC ELECTRICAL CHARACTERISTICS (continued)
(V = +2.7V to +6.5V, V = 0V, V
= 0V, V = V /2, R tied to V /2, SHDN ≥ 2V (or open), T = -40°C to +85°C, unless
OUT CC L CC A
CC
EE
CM
otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
dB
Power-Supply Rejection Ratio
Off-Leakage Current
V
= 2.7V to 6.5V
74
CC
±12
µA
SHDN < 0.8V, V
= 0V to V
CC
OUT
V
= 0.25V to 2.45V, R = 100kΩ
84
66
86
68
OUT
L
V
= 2.7V
= 5V
CC
V
OUT
= 0.4V to 2.3V, R = 250Ω
L
Large-Signal Voltage Gain
dB
V
OUT
= 0.25V to 4.75V, R = 100kΩ
L
V
CC
V
OUT
= 0.4V to 4.6V, R = 250Ω
L
V
- V
25
40
CC
OH
MAX4122/
MAX4123/
MAX4124/
MAX4125
R
R
R
R
= 100kΩ
= 250Ω
= 100kΩ
= 250Ω
L
L
L
L
V
OL
- V
EE
V
CC
- V
300
190
35
OH
V
OL
- V
EE
Output Voltage Swing
mV
V
CC
- V
OH
MAX4126/
MAX4127/
MAX4128/
MAX4129
1
V
OL
- V
50
EE
V
CC
- V
350
250
0.8
OH
V
OL
- V
EE
Low
MAX4123/MAX4125/MAX4127
MAX4123/MAX4125/MAX4127
V
SHDN Logic Threshold
High
2.0
2.7
±3
6.5
775
850
50
µA
V
SHDN Input Current
Operating Supply-Voltage Range
V
CC
= 2.7V
= 5V
Supply Current per Amplifier
V
CM
= V
= V /2
µA
µA
OUT
CC
V
CC
V
CC
= 2.7V
= 5V
Shutdown Supply Current
per Amplifier
SHDN < 0.8V,
MAX4123/MAX4125/MAX4127
V
CC
70
AC ELECTRICAL CHARACTERISTICS
(V = +2.7V to +6.5V, V = 0V, SHDN ≥ 2V (or open), T = +25°C, unless otherwise noted.)
CC
EE
A
PARAMETER
CONDITIONS
MAX4122/23/26/27/29
MIN
TYP
5
MAX
UNITS
Gain-Bandwidth Product
Phase Margin
MHz
MAX4124/25/28 (A ≥ 10)
25
64
60
12
10
V
MAX4122/23/26/27/29
degrees
dB
MAX4124/25/28 (A ≥ 10)
V
MAX4122/23/26/27/29
Gain Margin
MAX4124/25/28 (A ≥ 10)
V
f = 10kHz, V
MAX4122/23/26/27/29 (A = 1)
V
= 2Vp-p,
OUT
Total Harmonic Distortion
Slew Rate
0.003
%
MAX4122/23/26/27/29
2
V/µs
MAX4124/25/28 (A ≥ 10)
10
2.0
1.3
1
V
MAX4122/23/26/27/29 (A = 1), V
= 2V step
V
OUT
Settling Time to 0.01%
Turn-On Time
µs
µs
MAX4124/25/28 (A ≥ 10), V
= 2V step
V
OUT
V
CC
= 0V to 3V step, V
= V /2
OUT CC
4
_______________________________________________________________________________________
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
–MAX4129
AC ELECTRICAL CHARACTERISTICS (continued)
(V = +2.7V to +6.5V, V = 0V, SHDN ≥ 2V (or open), T = +25°C, unless otherwise noted.)
CC
EE
A
PARAMETER
CONDITIONS
MIN
TYP
1
MAX
UNITS
Enable
Disable
V
= 3V, V
= V /2,
OUT CC
CC
µs
SHDN Delay
MAX4123/25/27
0.2
3
Input Capacitance
pF
Input Noise Voltage Density
Input Noise Current Density
Amp-Amp Isolation
f = 1kHz
f = 1kHz
22
nV/√Hz
pA/√Hz
dB
0.4
135
500
500
MAX4126/27/28/29
MAX4122/23/26/27/29 (A = 1)
V
Capacitive Load Stability
pF
MAX4124/25/28 (A ≥ 10)
V
__________________________________________Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s
(V = +5V, V = 0V, V = V /2, T = +25°C, unless otherwise noted.)
CC
EE
CM
CC
A
MAX4122/23/26/27/29
GAIN AND PHASE vs. FREQUENCY
MAX4122/23/26/27/29
POWER-SUPPLY REJECTION
vs. FREQUENCY
MAX4322/26/29
GAIN AND PHASE vs. FREQUENCY
(WITH C
)
LOAD
MAX4122/29-02
MAX4322/26/29-01
180
144
180
144
60
60
A = +1
0
-20
-40
V
A = +1000
V
A = +1000
V
NO LOAD
40
20
0
40
20
0
108
72
108
72
R = ∞
L
GAIN
GAIN
C = 500pF
L
36
36
0
0
-60
-80
-36
-72
-108
-144
-36
-72
PHASE
PHASE
-20
-20
-108
-144
-180
-100
-180
-40
100
-40
100
1k
10k
100k 1M 10M 100M
1k
10k 100k
1M 10M 100M
10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
MAX4124/25/28
POWER-SUPPLY REJECTION
vs. FREQUENCY
MAX4124/25/28
MAX4124/25/28
GAIN AND PHASE vs. FREQUENCY
GAIN AND PHASE vs. FREQUENCY
(WITH C
)
LOAD
MAX14122/29-04
MAX4122/29-05
180
144
60
180
144
60
A = +10
V
0
-20
-40
GAIN
A = +1000
V
A = +1000
V
40
20
0
108
72
40
20
0
108
72
NO LOAD
R = ∞
L
GAIN
C = 500 pF
L
36
0
36
0
PHASE
PHASE
-60
-80
-36
-72
-36
-72
-20
-108
-144
-20
-108
-144
-180
-100
-40
-180
-40
10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
100
1k
10k
100k
1M
10M
100
1k
10k 100k
1M 10M 100M
FREQUENCY (Hz)
FREQUENCY (Hz)
_______________________________________________________________________________________
5
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s (c o n t in u e d )
(V = +5V, V = 0V, V = V /2, T = +25°C, unless otherwise noted.)
CC
EE
CM
CC
A
MAX4124/25/28
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX4122/23/26/27/29
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX4126/27/28/29
CHANNEL SEPARATION vs. FREQUENCY
100
10
100
10
130
120
110
100
90
A = +10
V
A = +1
V
1
0.1
80
70
60
1
0.1
50
0.01
100
1k
10k 100k 1M 10M
FREQUENCY (Hz)
100M
100
1k
10k
100k
1M
10M
100
1k
10k 100k 1M 10M
FREQUENCY (Hz)
100M
FREQUENCY (Hz)
–MAX4129
MAX4323/MAX4327
SUPPLY CURRENT PER AMPLIFIER
vs. TEMPERATURE
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
OUTPUT LEAKAGE CURRENT
vs. TEMPERATURE
60
50
40
30
20
15
10
5
900
850
800
750
700
A = +1
V
SHDN = 0V
V
= 6.5V
CC
V
= 6.5V
= 2.7V
V
= 6.5V
CC
CC
V
SHORT
OUT
TO V
EE
V
CC
= 2.7V
V
= 2.7V
CC
V
CC
650
600
550
20
10
0
V
= 6.5V
= 2.7V
CC
V
SHORT
OUT
-5
TO V
CC
V
CC
SHDN = 0V
-40 -25 -10
0
500
-10
5
20 35 50 65 80 95
-40 -25 -10
5
20 35 50 65 80 95
-40 -25 -10
5
20 35 50 65 80 95
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
INPUT BIAS CURRENT
vs. COMMON-MODE VOLTAGE
INPUT BIAS CURRENT
vs. TEMPERATURE
3.00
2.25
50
40
50
40
SOT23-5
PACKAGE
V
= 6.5V, V = V
CM CC
CC
V
= 2.7V
30
CC
30
20
10
0
1.50
0.75
0
V = 2.7V, V = V
CC CM CC
20
V
= 6.5V
CC
10
0
-10
-20
-30
-40
-50
-60
-10
-0.75
V
= 2.7V, V = V
CM EE
CC
-20
-30
-1.50
-2.25
-3.00
SO PACKAGE
V
CC
= 6.5V, V = V
CM EE
-40
-50
-40 -25 -10
5
20 35 50 65 80 95
0
1
2
3
4
5
6
-40 -25 -10
5
20 35 50 65 80 95
TEMPERATURE (°C)
COMMON-MODE VOLTAGE (V)
TEMPERATURE (°C)
6
_______________________________________________________________________________________
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
–MAX4129
Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s (c o n t in u e d )
(V = +5V, V = 0V, V = V /2, T = +25°C, unless otherwise noted.)
CC
EE
CM
CC
A
MINIMUM OUTPUT VOLTAGE
vs. TEMPERATURE
COMMON-MODE REJECTION
vs. TEMPERATURE
MAXIMUM OUTPUT VOLTAGE
vs. TEMPERATURE
250
200
150
100
300
250
200
150
120
R TO V
L
CC
R TO V
L
EE
115
110
105
100
V
= 6.5V, R = 500Ω
CC
L
V
= 6.5V, R = 500Ω
L
CC
V
= 0V TO 5.0V
CM
V
CC
= 2.7V, R = 500Ω
V
= 2.7V, R = 500Ω
L
CC
L
95
90
85
V
= 0.2V TO 5.2V
= 0.3V TO 5.3V
100
50
CM
V
CC
= 6.5V, R = 100kΩ (TOP)
L
50
0
V = 6.5V, R = 100kΩ
CC L
V
CM
V
= 2.7V, R = 100kΩ (BOTTOM)
L
CC
V
CC
= 2.7V, R = 100kΩ
L
80
0
-40 -25 -10
5
20 35 50 65 80 95
-40 -25 -10
5
20 35 50 65 80 95
-40 -25 -10
5
20 35 50 65 80 95
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
LARGE-SIGNAL GAIN
vs. TEMPERATURE
120
110
100
90
120
110
100
90
125
120
115
110
105
V
= 2.7V
V = 6.5V
CC
CC
R = 500Ω
L
V
= 6.5V,
CC
R = 100kΩ
L
V
(p-p) = V - 1V
R TO V
L
R TO V
L EE
OUT CC
EE
R TO V
L
EE
R = 100kΩ
L
V
CC
= 2.7V,
R = 10kΩ
R TO V
L
EE
L
R = 10kΩ
L
R = 2kΩ
L
R = 2kΩ
L
100
95
R = 500Ω
L
V
CC
= 6.5V, R TO V
L CC
80
80
90
R = 500Ω
L
85
80
75
70
70
V
= 2.7V, R TO V
L CC
CC
60
60
0
100
200
300
400
500
600
0
100
200
300
400
500
600
-40 -25 -10
5
20 35 50 65 80 95
OUTPUT VOLTAGE: EITHER SUPPLY (mV)
OUTPUT VOLTAGE: EITHER SUPPLY (mV)
TEMPERATURE (°C)
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
LARGE-SIGNAL GAIN
vs. TEMPERATURE
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
120
110
100
90
120
110
100
90
125
120
115
110
105
V
= 6.5V
V = 6.5V, R TO V
CC L EE
R = 100kΩ
CC
V
= 2.7V
CC
L
CC
R = 100kΩ
L
R TO V
L
R TO V
L
CC
V
CC
= 6.5V, R TO V
L CC
R = 10kΩ
L
R = 10kΩ
L
R = 2kΩ
L
R = 2kΩ
L
100
95
V
CC
= 2.7V, R TO V
L EE
R = 500Ω
L
R = 500Ω
L
V
CC
= 2.7V, R TO V
L
CC
80
80
90
85
80
75
70
70
V
(p-p) = V - 600mV
OUT
CC
R = 100kΩ
L
60
60
0
100
200
300
400
500
600
-40 -25 -10
5
20 35 50 65 80 95
0
100
200
300
400
500
600
TEMPERATURE (°C)
OUTPUT VOLTAGE: EITHER SUPPLY (mV)
OUTPUT VOLTAGE: EITHER SUPPLY (mV)
_______________________________________________________________________________________
7
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s (c o n t in u e d )
(V = +5V, V = 0V, V = V /2, T = +25°C, unless otherwise noted.)
CC
EE
CM
CC
A
MAX4123
MINIMUM OPERATING VOLTAGE
vs. TEMPERATURE
MAX4123
MAX4122/23/26/27/29 TOTAL HARMONIC
DISTORTION AND NOISE vs. FREQUENCY
TOTAL HARMONIC DISTORTION AND NOISE
vs. PEAK-TO-PEAK SIGNAL AMPLITUDE
0.1
1.9
0.040
0.035
0.030
0.025
0.020
A
= +1
V
A = +1
V
10kHz SINEWAVE
R TO V /2
500kHz LOWPASS FILTER
1.8
1.7
2V SIGNAL
p-p
500kHz LOWPASS FILTER
L
CC
R = 10kΩ TO V /2
L
CC
1.6
1.5
1.4
1.3
1.2
0.01
R = 2kΩ
L
R = 250Ω
L
0.015
0.010
0.005
R = 100kΩ
L
R = 10kΩ
L
0.001
0
4.0
4.2
4.4
4.6
4.8
5.0
10
100
1k
FREQUENCY (Hz)
10k
100k
-40 -25 -10
5
20 35 50 65 80 95
PEAK-TO-PEAK SIGNAL AMPLITUDE (V)
TEMPERATURE (°C)
–MAX4129
MAX4122/23/26/27/29
SMALL-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
MAX4122/23/26/27/29
LARGE-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
MAX4122/23/26/27/29
SMALL-SIGNAL TRANSIENT
RESPONSE (INVERTING)
A = +1
V
A = +1
V
A = -1
V
IN
IN
IN
OUT
OUT
OUT
TIME (200ns/div)
TIME (2µs/div)
TIME (200ns/div)
MAX4124/25/28
SMALL-SIGNAL TRANSIENT
RESPONSE (INVERTING)
MAX4124/25/28
SMALL-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
MAX4122/23/26/27/29
LARGE-SIGNAL TRANSIENT
RESPONSE (INVERTING)
A = -10
V
A = +10
V
A = -1
V
IN
(5mV/div)
IN
(5mV/div)
IN
(2V/div)
OUT
(50mV/div)
OUT
(50mV/div)
OUT
(2V/div)
TIME (200ns/div)
TIME (200ns/div)
TIME (2µs/div)
8
_______________________________________________________________________________________
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
–MAX4129
Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s (c o n t in u e d )
(V = +5V, V = 0V, V = V /2, T = +25°C, unless otherwise noted.)
CC
EE
CM
CC
A
MAX4124/25/28
MAX4124/25/28
LARGE-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
LARGE-SIGNAL TRANSIENT
RESPONSE (INVERTING)
A = -10
V
A = +10
V
IN
IN
(200mV/div)
(200mV/div)
OUT
(2V/div)
OUT
(2V/div)
TIME (2µs/div)
TIME (2µs/div)
P in De s c rip t io n
PIN
NAME
FUNCTION
MAX4122
MAX4124
MAX4123
MAX4125
MAX4126
MAX4128
MAX4127
MAX4129
1
2
6
4
—
4
—
4
—
11
OUT
Output
Negative Supply. Ground for single-supply
operation.
V
EE
3
4
3
2
—
—
8
—
—
—
—
4
IN+
IN-
Noninverting Input
Inverting Input
Positive Supply
No Connect
5
7
14
V
CC
—
1, 5
—
5, 7, 8, 10
—
N.C.
Shutdown Control. Tie high or leave floating
to enable amplifier.
—
8
—
—
—
SHDN
—
—
—
—
—
—
1, 7
2, 6
3, 5
1, 13
2, 12
3, 11
1, 7
2, 6
3, 5
OUT1, OUT2
IN1-, IN2-
Outputs for Amps 1 and 2
Inverting Inputs for Amps 1 and 2
Noninverting Inputs for Amps 1 and 2
IN1+, IN2+
SHDN1,
SHDN2
Shutdown Control for Amps 1 and 2. Tie
high or leave floating to enable amplifier.
—
—
—
6, 9
—
—
—
—
—
—
—
—
—
—
—
—
—
8, 14
9, 13
OUT3, OUT4
IN3-, IN4-
Outputs for Amps 3 and 4
Inverting Inputs for Amps 3 and 4
Noninverting Inputs for Amps 3 and 4
10, 12
IN3+, IN4+
_______________________________________________________________________________________
9
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
MAX4122–
MAX4129
MAX4122–
MAX4129
R3
R1
R3
R1
R3 = R1 R2
R3 = R1 R2
R2
R2
Figure 1a. Reducing Offset Error Due to Bias Current
(Noninverting)
Figure 1b. Reducing Offset Error Due to Bias Current
(Inverting)
–MAX4129
1k
1k
Figure 2. Input Protection Circuit
10 ______________________________________________________________________________________
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
–MAX4129
Ap p lic a t io n s In fo rm a t io n
V
CC
= 3V
A = +1
V
Ra il-t o -Ra il In p u t S t a g e
De vic e s in the MAX4122–MAX4129 fa mily of hig h-
s p e e d a mp lifie rs ha ve ra il-to-ra il inp ut a nd outp ut
stages designed for low-voltage single-supply opera-
tion. The input stage consists of separate NPN and
PNP differential stages, which combine to provide an
input common-mode range extending 0.2V beyond the
supply rails. The PNP stage is active for input voltages
close to the negative rail, and the NPN stage is active
for input voltages near the positive rail. The input offset
voltage is typically below 200µV. The switchover transi-
IN
OUT
tion re g ion, whic h oc c urs ne a r V
/ 2, ha s b e e n
CC
TIME (2µs/div)
extended to minimize the slight degradation in CMRR
caused by the mismatch of the input pairs. Their low
offset voltage, high bandwidth, and rail-to-rail common-
mode range make these op amps excellent choices for
precision low-voltage data-acquisition systems.
Figure 3. Rail-to-Rail Input /Output Voltage Range
10,000
Since the input stage switches between the NPN and
PNP pairs, the input bias current changes polarity as
the input voltage passes through the transition region.
To reduce the offset error caused by input bias cur-
rents flowing through external source impedances,
match the effective impedance seen by each input
(Figures 1a, 1b). High source impedances, together
with the input capacitance, can create a parasitic pole
tha t p rod uc e s a n und e rd a mp e d s ig na l re s p ons e .
Reducing the input impedance or placing a small (2pF
to 10p F) c a p a c itor a c ros s the fe e d b a c k re s is tor
improves the response.
UNSTABLE
REGION
1000
R TO V
L
EE
V
= V /2
OUT CC
100
100
1k
10k
100k
The MAX4122–MAX4129’s inputs are protected from
large differential input voltages by 1kΩ series resistors
a nd b a c k-to-b a c k trip le d iod e s a c ros s the inp uts
(Figure 2). For differential input voltages less than 1.8V
the input resistance is typically 500kΩ. For differential
input voltages greater than 1.8V the input resistance is
a p p roxima te ly 2kΩ, a nd the inp ut b ia s c urre nt is
determined by the following equation:
RESISTIVE LOAD (Ω)
Figure 4. Capacitive-Load Stability
0.00V to 2.90V. The maximum output voltage swing
depends on the load, but will be within 150mV of a +3V
supply, even with the maximum load (500Ω to ground).
V
- 1.8V
DIFF
Driving a capacitive load can cause instability in most
high-speed op amps, especially those with low quiescent
current. The MAX4122–MAX4129 have a high tolerance
for capacitive loads. They are stable with capacitive
loads up to 500pF. Figure 4 gives the stable operating
re g ion for c a p a c itive loa d s . Fig ure s 5–8 s how the
response with capacitive loads, and the results of adding
an isolation resistor in series with the output (Figure 9).
The resistor improves the circuit’s phase margin by iso-
lating the load capacitor from the op amp’s output.
I
=
BIAS
2kΩ
Ra il-t o -Ra il Ou t p u t S t a g e
The minimum output voltage will be within millivolts of
ground for single-supply operation where the load is
referenced to ground (V ). Figure 3 shows the input
EE
voltage range and output voltage swing of a MAX4123
connected as a voltage follower. With a +3V supply
and the load tied to ground, the output swings from
______________________________________________________________________________________ 11
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
A = +10
C = 500pF
L
V
A = +1
C = 500pF
L
V
IN
(5mV/div)
IN
OUT
(50mV/div)
OUT
TIME (1µs/div)
TIME (400ns/div)
Figure 5. MAX4122/23/26/27/29 Small-Signal Transient
Response with Capacitive Load
Figure 6. MAX4124/25/28 Small-Signal Transient Response
with Capacitive Load
–MAX4129
A = +1
V
A = +10
V
C = 1000pF
L
C = 1000pF
L
R
= 56Ω
S
R = 39Ω
S
IN
IN
(5mV/div)
OUT
OUT
(50mV/div)
TIME (400ns/div)
TIME (1µs/div)
Figure 8. MAX4124/25/28 Transient Response to Capacitive
Load with Isolation Resistor
Figure 7. MAX4122/23/26/27/29 Transient Response to
Capacitive Load with Isolation Resistor
V
CC
0V TO 2.7V
STEP FOR
POWER-UP
TEST. 2.7V
FOR SHUTDOWN
ENABLE TEST.
2k
2k
V
OUT
R
S
0V TO 2.7V
STEP FOR
SHUTDOWN
TEST
SHDN
C
L
10k
10Ω
SUPPLY-CURRENT
MONITORING POINT
Figure 9. Capacitive-Load-Driving Circuit
Figure 10. Power-Up/Shutdown Test Circuit
12 ______________________________________________________________________________________
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
–MAX4129
V
CC
V
CC
(1V/div)
OUT
I
CC
(500µA/div)
TIME (5µs/div)
TIME (5µs/div)
Figure 11. Power-Up Output Voltage
Figure 12. Power-Up Supply Current
V
CC
= 2.7V
V
CC
= 2.7V
R = 10kΩ
L
SHDN
SHDN
(1V/div)
(1V/div)
OUT
I
CC
(0.5V/div)
(500µA/div)
TIME (2µs/div)
TIME (2µs/div)
Figure 13. Shutdown Output Voltage
Figure 14. Shutdown Enable/Disable Supply Current
P o w e r-Up a n d S h u t d o w n Mo d e
P o w e r S u p p lie s a n d La yo u t
The MAX4122–MAX4129 amplifiers typically settle with-
in 1µs after power-up. Using the test circuit of Figure
10, Figures 11 and 12 show the output voltage and
supply current on power-up.
The MAX4122–MAX4129 operate from a single +2.7V
to +6.5V power supply, or from dual supplies of ±1.35V
to ±3.25V. For single-supply operation, bypass the
power supply with a 0.1µF ceramic capacitor in parallel
with at least 1µF. For dual supplies, bypass each sup-
ply to ground.
The MAX4123, MAX4125, and MAX4127 have a shut-
down option. When the shutdown pin (SHDN) is pulled
low, the supply current drops below 25µA per amplifier
and the amplifiers are disabled with the outputs in a
high-impedance state. Pulling SHDN high or leaving it
floa ting e na ble s the a mplifie r. In the dua l-a mplifie r
MAX4129, the shutdown functions operate indepen-
dently. Figures 13 and 14 show the output voltage and
supply current responses of the MAX4123 to a shut-
down pulse.
Good layout improves performance by decreasing the
amount of stray capacitance at the op amp’s inputs
and outputs. To decrease stray capacitance, minimize
trace lengths and resistor leads by placing external
components close to the op amp’s pins.
______________________________________________________________________________________ 13
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
P in Co n fig u ra t io n s
TOP VIEW
1
2
3
5
4
V
OUT
CC
MAX4122
MAX4124
V
EE
IN+
IN-
SOT23-5
–MAX4129
1
2
3
4
8
7
6
5
V
OUT1
IN1-
1
2
3
4
8
7
6
5
SHDN
N.C.
IN1-
IN1+
CC
OUT2
IN2-
V
CC
MAX4126
MAX4128
MAX4123
MAX4125
OUT
N.C.
IN1+
V
EE
IN2+
V
EE
SO/µMAX
SO/µMAX
OUT1
IN1-
V
OUT1
IN1-
OUT4
IN4-
1
CC
1
2
3
4
5
6
7
14
13
12
11
10
9
14
13
12
11
10
9
OUT2
IN2-
2
3
4
5
6
7
IN1+
IN1+
IN4+
V
EE
V
CC
IN2+
N.C.
MAX4127
V
EE
MAX4129
N.C.
SHDN1
N.C.
IN2+
IN2-
IN3+
IN3-
SHDN2
N.C.
OUT2
8
OUT3
8
SO
SO
14 ______________________________________________________________________________________
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
–MAX4129
Ord e rin g In fo rm a t io n (c o n t in u e d )
PIN-
PACKAGE
MARKING
INFO.
PART
TEMP. RANGE
MAX4124EUK -40°C to +85°C 5 SOT23-5
MAX4125ESA -40°C to +85°C 8 SO
MAX4125EUA -40°C to +85°C 8 µMAX
MAX4126ESA -40°C to +85°C 8 SO
MAX4126EUA -40°C to +85°C 8 µMAX
AABA
—
—
—
—
MAX4127C/D
0°C to +70°C Dice*
—
MAX4127ESD -40°C to +85°C 14 SO
MAX4128ESA -40°C to +85°C 8 SO
MAX4128EUA -40°C to +85°C 8 µMAX
MAX4129ESD -40°C to +85°C 14 SO
—
—
—
—
*Dice are specified at T = +25°C, DC parameters only.
A
__________________________________________________________Ch ip To p o g ra p h ie s
MAX4123/
MAX4125
MAX4127/
MAX4128
V
CC
OUT1
IN-
V
EE
IN1-
OUT2
SHDN
iN+
0. 055"
(1. 397mm)
0. 066"
(1. 676mm)
IN2-
IN1+
V
EE
IN2+
V
CC
V
EE
OUT
0. 036"
(0. 914mm)
V
CC
SHDN1
V
EE
V
CC
SHDN2
0. 053"
(1. 346mm)
TRANSISTOR COUNT: 170
TRANSISTOR COUNT: 340
SUBSTRATE CONNECTED TO V
SUBSTRATE CONNECTED TO V
EE
EE
______________________________________________________________________________________ 15
S in g le /Du a l/Qu a d , Wid e -Ba n d w id t h , Lo w -P o w e r,
S in g le -S u p p ly Ra il-t o -Ra il I/O Op Am p s
________________________________________________________P a c k a g e In fo rm a t io n
–MAX4129
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 ____________________Ma x im In t e g ra t e d P ro d u c t s , 1 2 0 S a n Ga b rie l Drive , S u n n yva le , CA 9 4 0 8 6 4 0 8 -7 3 7 -7 6 0 0
© 1997 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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