19-1089; Rev 2; 8/97
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
____________________Selection Table
PART
AMPS PER
PACKAGE
SHUTDOWN
MODE
PINPACKAGE
MAX4130
1
—
5 SOT23-5
MAX4131
1
Yes
8 SO/µMAX
MAX4132
2
—
8 SO/µMAX
MAX4133
2
Yes
14 SO
MAX4134
4
—
14 SO
____________________________Features
♦ 5-Pin SOT23-5 Package (MAX4130)
♦ +2.7V to +6.5V Single-Supply Operation
♦ Rail-to-Rail Input Common-Mode Voltage Range
♦ Rail-to-Rail Output Voltage Swing
♦ 10MHz Gain-Bandwidth Product
♦ 900µA Quiescent Current per Amplifier
♦ 25µA Shutdown Function (MAX4131/MAX4133)
♦ 200µV Offset Voltage
♦ No Phase Reversal for Overdriven Inputs
♦ Drive 250Ω Loads
♦ Stable with 160pF Capacitive Loads
♦ Unity-Gain Stable
______________Ordering Information
PART
TEMP. RANGE
PINPACKAGE
SOT
TOP MARK
MAX4130EUK
-40°C to +85°C
5 SOT23-5
AABB
MAX4131C/D
MAX4131ESA
MAX4131EUA
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
Dice*
8 SO
8 µMAX
Ordering Information continued at end of data sheet.
*Dice are specified at TA = +25°C, DC parameters only.
__________Typical Operating Circuit
________________________Applications
+3V
Battery-Powered Instruments
MAX147
3
Portable Equipment
Data-Acquisition Systems
Signal Conditioning
Low-Power, Low-Voltage Applications
—
—
—
6
SERIAL
INTERFACE
8
7
SHDN
VDD
DOUT
AIN
SCLK
VREF
CS
GND
1
2
MAX4131
4
5
Pin Configurations appear at end of data sheet.
________________________________________________________________ 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.
MAX4130–MAX4134
_______________General Description
The MAX4130–MAX4134 family of operational amplifiers
combines 10MHz gain-bandwidth product and excellent
DC accuracy with rail-to-rail operation at the inputs and
outputs. These devices require only 900µA per amplifier,
and operate from either a single supply (+2.7V to +6.5V)
or dual supplies (±1.35V to ±3.25V) with a commonmode voltage range that extends 250mV beyond VEE
and VCC. They are capable of driving 250Ω loads and
are unity-gain stable. In addition, the MAX4131/
MAX4133 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, the MAX4130–MAX4134 are ideal for lowvoltage, single-supply operation. Although the minimum
operating 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 signalconditioning stages for precision, low-voltage dataacquisition systems. The MAX4130 comes in the
space-saving SOT23-5 package.
MAX4130–MAX4134
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC-VEE).....................................................7.5V
IN+, IN-, SHDN Voltage ...................(VCC + 0.3V) to (VEE - 0.3V)
Output Short-Circuit Duration (Note 1).......................Continuous
(short to either supply)
Continuous Power Dissipation (TA = +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
MAX413_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
(VCC = +2.7V to +6.5V, VEE = 0V, VCM = 0V, VOUT = VCC / 2, RL tied to VCC / 2, SHDN ≥ 2V (or open), TA = +25°C, unless
otherwise noted.)
PARAMETER
Input Offset Voltage
CONDITIONS
VCM = VEE to VCC
MIN
TYP
MAX
MAX4130EUK
±0.35
±1.50
MAX4131ESA
±0.20
±0.60
MAX4131EUA
±0.35
±1.20
MAX4132ESA/MAX4133ESD
±0.25
±0.75
MAX4132EUA
±0.40
±1.50
MAX4134ESD
±0.35
±1.50
±50
±150
±12
Input Bias Current
VCM = VEE to VCC
Input Offset Current
VCM = VEE to VCC
±1
Differential Input Resistance
-1.5V < VDIFF < 1.5V
500
Common-Mode Input
Voltage Range
Common-Mode Rejection Ratio
VEE 0.25
(VEE - 0.25V) < VCM <
(VCC + 0.25V)
VCC +
0.25
V
90
78
98
MAX4131EUA
68
88
MAX4132ESA/MAX4133ESD
74
94
MAX4132EUA
66
86
MAX4134ESD
64
84
78
100
dB
0.1
Ω
AV = 1
Off-Leakage Current
SHDN < 0.8V, VOUT = 0V to VCC
2
nA
kΩ
67
Output Resistance
VCC = 5V
nA
MAX4131ESA
VCC = 2.7V to 6.5V
VCC = 2.7V
mV
MAX4130EUK
Power-Supply Rejection Ratio
Large-Signal Voltage Gain
UNITS
±0.1
VOUT = 0.25V to 2.45V, RL = 100kΩ
92
108
VOUT = 0.4V to 2.3V, RL = 250Ω
72
82
VOUT = 0.25V to 4.75V, RL = 100kΩ
94
108
VOUT = 0.4V to 4.6V, RL = 250Ω
75
86
_______________________________________________________________________________________
dB
±1
µA
dB
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
(VCC = +2.7V to +6.5V, VEE = 0V, VCM = 0V, VOUT = VCC / 2, RL tied to VCC / 2, SHDN ≥ 2V (or open), TA = +25°C, unless
otherwise noted.)
PARAMETER
CONDITIONS
MAX4130/
MAX4131
RL = 100kΩ
RL = 250Ω
Output Voltage Swing
MAX4132/
MAX4133/
MAX4134
RL = 100kΩ
RL = 250Ω
MIN
VCC - VOH
TYP
MAX
12
20
VOL - VEE
20
35
VCC - VOH
240
290
VOL - VEE
125
170
VCC - VOH
15
30
VOL - VEE
25
40
VCC - VOH
280
330
VOL - VEE
180
230
Output Short-Circuit Current
50
SHDN Logic Threshold
MAX4131–MAX4134
SHDN Input Current
MAX4131–MAX4134
Low
High
2.0
2.7
Supply Current per Amplifier
VCM = VOUT = VCC / 2
Shutdown Supply Current
per Amplifier
SHDN > 0.8V, MAX4131–MAX4134
mV
mA
0.8
±1
Operating Supply-Voltage Range
UNITS
V
±3
µA
6.5
V
VCC = 2.7V
900
1050
VCC = 5V
1000
1150
VCC = 2.7V
25
40
VCC = 5V
40
60
µA
µA
DC ELECTRICAL CHARACTERISTICS
(VCC = +2.7V to +6.5V, VEE = 0V, VCM = 0V, VOUT = VCC / 2, RL tied to VCC / 2, SHDN ≥ 2V (or open), TA = -40°C to +85°C, unless
otherwise noted.)
PARAMETER
Input Offset Voltage
CONDITIONS
VCM = VEE to VCC
MIN
TYP
MAX
MAX4130EUK
±3.50
MAX4131ESA
±0.75
MAX4131EUA
±4.40
MAX4132ESA/MAX4133ESD
±0.95
MAX4132EUA
±4.70
MAX4134ESD
±4.00
Input Offset Voltage Tempco
±2
UNITS
mV
µV/°C
Input Bias Current
VCM = VEE to VCC
±160
nA
Input Offset Current
VCM = VEE to VCC
±18
nA
VCC +
0.20
V
Common-Mode Input
Voltage Range
Common-Mode Rejection Ratio
VEE 0.20
(VEE - 0.2V) < VCM <
(VCC + 0.2V)
MAX4130EUK
62
MAX4131ESA
76
MAX4131EUA
60
MAX4132ESA/MAX4133ESD
74
MAX4132EUA
58
MAX4134ESD
60
dB
_______________________________________________________________________________________
3
MAX4130–MAX4134
DC ELECTRICAL CHARACTERISTICS (continued)
MAX4130–MAX4134
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +2.7V to +6.5V, VEE = 0V, VCM = 0V, VOUT = VCC / 2, RL tied to VCC / 2, SHDN ≥ 2V (or open), TA = -40°C to +85°C, unless
otherwise noted.)
PARAMETER
CONDITIONS
Power-Supply Rejection Ratio
VCC = 2.7V to 6.5V
Off-Leakage Current
SHDN < 0.8V, VOUT = 0V to VCC
VCC = 2.7V
Large-Signal Voltage Gain
VCC = 5V
MAX4130/
MAX4131
MIN
MAX
74
VOUT = 0.25V to 2.45V, RL = 100kΩ
84
VOUT = 0.4V to 2.3V, RL = 250Ω
66
VOUT = 0.25V to 4.75V, RL = 100kΩ
86
VOUT = 0.4V to 4.6V, RL = 250Ω
68
RL = 100kΩ
Output Voltage Swing
RL = 100kΩ
RL = 250Ω
SHDN Logic Threshold
MAX4131–MAX4134
MAX4131—MAX4134
SHDN Input Current
MAX4131–MAX4134
VCC - VOH
25
40
VCC - VOH
300
VOL - VEE
190
VCC - VOH
35
VOL - VEE
50
VCC - VOH
350
VOL - VEE
250
Low
0.8
Operating Supply-Voltage Range
2.0
2.7
Supply Current per Amplifier
VCM = VOUT = VCC / 2
Shutdown Supply Current
per Amplifier
SHDN < 0.8V, MAX4131–MAX4134
µA
dB
VOL - VEE
High
UNITS
dB
±12
RL = 250Ω
MAX4132/
MAX4133/
MAX4134
TYP
mV
V
±3
µA
6.5
V
VCC = 2.7V
1100
VCC = 5V
1200
VCC = 2.7V
50
VCC = 5V
70
µA
µA
AC ELECTRICAL CHARACTERISTICS
(VCC = +2.7V to +6.5V, VEE = 0V, SHDN ≥ 2V (or open), TA = +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Gain-Bandwidth Product
10
MHz
Phase Margin
62
degrees
12
dB
Gain Margin
Total Harmonic Distortion
f = 10kHz, VOUT = 2Vp-p (AV = 1)
Slew Rate
Settling Time to 0.01%
AV = 1, VOUT = 2V step
Turn-On Time
VCC = 0V to 3V step, VOUT = VCC / 2
SHDN Delay
MAX4131–MAX4134, VCC = 3V,
VOUT = VCC / 2
Input Capacitance
0.003
%
4
V/µs
2.0
µs
1
µs
Enable
1
Disable
0.2
µs
3
pF
Input Noise Voltage Density
f = 1kHz
22
nV/√Hz
Input Noise Current Density
f = 1kHz
0.4
pA/√Hz
Capacitive Load Stability
AV = 1
160
pF
4
_______________________________________________________________________________________
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
MAX4130/34-02
60
144
20
36
0
-36
PHASE
-72
-108
-20
108
72
20
36
0
0
-36
PHASE
-72
-20
10k
100k
1M
10M
-144
-40
100
1k
10k
FREQUENCY (Hz)
1M
10M
10
1150
MAX4130/34-05
10
1
0.10
VCC = +6.5V
1100
SUPPLY CURRENT (µA)
AV = +1
1050
1000
VCC = +2.7V
950
900
10M
100M
50
VCC = +6.5V
40
35
30
25
VCC = +2.7V
20
15
5
1M
10M
0
-40 -25 -10
100M
AV = +1
SHDN = 0V
VOUT SHORT
TO VEE
VCC = +6.5V
VCC = +2.7V
5
0
VOUT SHORT
TO VCC
VCC = +6.5V
VCC = +2.7V
20 35 50 65
INPUT BIAS CURRENT
vs. COMMON-MODE VOLTAGE
INPUT BIAS CURRENT
vs. TEMPERATURE
VCC = +6.5V
20
10
0
-10
-20
-30
-40
5
20 35 50 65
TEMPERATURE (°C)
80 95
80 95
60
40
20
VCC = +6.5V, VCM = VCC
VCC = +2.7V, VCM = VCC
0
-20
VCC = +2.7V, VCM = VEE
-40
VCC = +6.5V, VCM = VEE
-60
-40 -25 -10
20 35 50 65
TEMPERATURE (°C)
-50
-10
5
TEMPERATURE (°C)
VCC = +2.7V
30
-40 -25 -10
80 95
40
INPUT BIAS CURRENT (nA)
MAX4130/34-08
OUTPUT LEAKAGE CURRENT
vs. TEMPERATURE
5
MAX4130/34-11
100k
INPUT BIAS CURRENT (nA)
10k
MAX4130/34-10
1k
FREQUENCY (Hz)
LEAKAGE CURRENT (µA)
1M
45
800
100
-5
10k 100k
10
0.01
10
1k
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
850
15
100
FREQUENCY (Hz)
SUPPLY CURRENT PER AMPLIFIER
vs. TEMPERATURE
100
OUTPUT IMPEDANCE (Ω)
100k
-100
-180
100M
FREQUENCY (Hz)
OUTPUT IMPEDANCE
vs. FREQUENCY
20
-60
-80
SUPPLY CURRENT (µA)
1k
-180
100M
-40
-108
-144
-40
100
-20
MAX4130/34-06
0
GAIN (dB)
GAIN (dB)
72
AV = +1
0
144
GAIN
AV = +1000
RL = ∞
CL = 160pF
40
108
MAX4130/34-07
GAIN
PHASE (DEGREES)
AV = +1000
NO LOAD
180
PSR (dB)
180
PHASE (DEGREES)
MAX4130/34-01
60
40
POWER-SUPPLY REJECTION
vs. FREQUENCY
GAIN AND PHASE
vs. FREQUENCY (WITH CLOAD)
MAX4130/34-03
GAIN AND PHASE
vs. FREQUENCY
-60
0
1
2
3
4
5
COMMON-MODE VOLTAGE (V)
6
-40 -25 -10
5
20 35 50 65
80 95
TEMPERATURE (°C)
_______________________________________________________________________________________
5
MAX4130–MAX4134
__________________________________________Typical Operating Characteristics
(VCC = +5V, VEE = 0V, VCM = VCC / 2, TA = +25°C, unless otherwise noted.)
____________________________ Typical Operating Characteristics (continued)
(VCC = +5V, VEE = 0V, VCM = VCC / 2, TA = +25°C, unless otherwise noted.)
-1.50
SO PACKAGE
-2.25
1.4
1.3
1.2
-3.00
-40 -25 -10
5
20 35 50 65
5
20 35 50 65
MAX4130/34-12
20 35 50 65
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
VCC = +6.5V
RL TO VEE
120
120
MAX4130/34-16
130
MAX4130/34-19
RL = 100kΩ
90
105
RL = 100kΩ
100
RL = 10kΩ
RL = 2kΩ
90
80
80
300
400
500
600
RL = 2kΩ
95
90
RL = 500Ω
80
75
70
70
200
100
85
RL = 500Ω
75
70
RL = 10kΩ
110
GAIN (dB)
RL = 500Ω
GAIN (dB)
RL = 2kΩ
95
80 95
RL = 100kΩ
VCC = +2.7V
RL TO VCC
115
110
0
100
200
300
400
500
0
600
100
200
300
400
500
600
OUTPUT VOLTAGE: EITHER SUPPLY (mV)
OUTPUT VOLTAGE: EITHER SUPPLY (mV)
OUTPUT VOLTAGE: EITHER SUPPLY (mV)
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
LARGE-SIGNAL GAIN
vs. TEMPERATURE
LARGE-SIGNAL GAIN
vs. TEMPERATURE
120
VCC = +2.7V
RL TO VEE
115
110
RL = 100kΩ
GAIN (dB)
RL = 500Ω
RL = 2kΩ
90
RL = 10kΩ
VOUT(p-p) = VCC -1V
RL = 500Ω
VCC = +6.5V,
RL TO VEE
100
85
VCC = +2.7V,
RL TO VEE
100
200
300
400
500
600
OUTPUT VOLTAGE: EITHER SUPPLY (mV)
110
105
VCC = +6.5V,
RL TO VCC
95
90
VCC = +2.7V, RL TO VCC
-40 -25 -10
5
20 35 50 65
TEMPERATURE (°C)
VCC = +2.7V, RL TO VCC OR VEE
100
RL = 100kΩ
VOUT(p-p) = VCC - 0.6V
80
80
60
VCC = +6.5V, RL TO VCC OR VEE
115
105
90
70
125
120
95
80
130
GAIN (dB)
MAX4130/34-15
120
0
5
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
85
6
-40 -25 -10
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
100
100
VCM = 0.3V TO 5.3V
85
TEMPERATURE (°C)
105
110
VCM = 0.2V TO 5.2V
90
80 95
RL = 10kΩ
100
95
TEMPERATURE (°C)
110
0
100
TEMPERATURE (°C)
VCC = +6.5V
RL TO VCC
115
105
80
-40 -25 -10
80 95
120
GAIN (dB)
1.5
VCM = 0V TO 5.0V
110
MAX4130/34-18
-0.75
1.6
115
MAX4130/34-20
0
1.7
COMMON-MODE REJECTION (dB)
0.75
1.8
120
MAX4130/34-17
VOLTAGE (mV)
1.50
1.9
MAX4130/34-21
SOT23-5
PACKAGE
MINIMUM OPERATING VOLTAGE (V)
MAX4130/34-09
3.00
2.25
COMMON-MODE REJECTION
vs. TEMPERATURE
MINIMUM OPERATING VOLTAGE
vs. TEMPERATURE
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
GAIN (dB)
MAX4130–MAX4134
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
80 95
-40 -25 -10
5
20 35 50 65
TEMPERATURE (°C)
_______________________________________________________________________________________
80 95
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
250
VCC - VOUT (mV)
VCC = +6.5V, RL = 500Ω
100
80
VCC = +2.7V, RL = 500Ω
60
VCC = +6.5V, RL = 500Ω
200
VCC = +2.7V, RL = 500Ω
150
0.030
MAX4130/34-14
140
RL TO VEE
100
2Vp-p SIGNAL
500kHz LOWPASS FILTER
RL = 10kΩ TO VCC / 2
0.025
THD AND NOISE (%)
RL TO VCC
VOUT - VEE (mV)
300
MAX4130/34-13
160
120
TOTAL HARMONIC DISTORTION
AND NOISE vs. FREQUENCY
MAXIMUM OUTPUT VOLTAGE
vs. TEMPERATURE
MAX4130/34-22A
MINIMUM OUTPUT VOLTAGE
vs. TEMPERATURE
0.020
0.015
0.010
40
VCC = +2.7V, RL = 100kΩ
-40 -25 -10
20 35 50 65
-40 -25 -10
5
20 35 50 65
TOTAL HARMONIC DISTORTION AND NOISE
vs. PEAK-TO-PEAK SIGNAL AMPLITUDE
CHANNEL SEPARATION
vs. FREQUENCY
0.01
RL = 2kΩ
RL = 10kΩ
RL = 100kΩ
10
80 95
140
VS = +5V
130
100
1k
10k
FREQUENCY (Hz)
100k
MAX4131
SMALL-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
AV = +1
VOLTAGE (50mV/div)
AV = +1
10kHz SINE WAVE
RL TO VCC / 2
500kHz LOWPASS FILTER
CHANNEL SEPARATION (dB)
MAX4130/34-23
TEMPERATURE (°C)
RL = 250Ω
120
110
100
IN
OUT
90
0.001
80
4.4
4.6
4.8
5.0
1k
10k
100k
1M
FREQUENCY (Hz)
MAX4131
SMALL-SIGNAL TRANSIENT
RESPONSE (INVERTING)
MAX4131
LARGE-SIGNAL TRANSIENT
RESPONSE (NONINVERTING)
AV = +1
VOLTAGE (2V/div)
IN
OUT
MAX4131
LARGE-SIGNAL TRANSIENT
RESPONSE (INVERTING)
AV = -1
IN
OUT
TIME (200ns/div)
TIME (200ns/div)
VOLTAGE (2V/div)
AV = -1
10M
MAX4130/34-26
PEAK-TO-PEAK SIGNAL AMPLITUDE (V)
MAX4130/34-27
4.2
MAX4130/34-25
4.0
VOLTAGE (50mV/div)
0
0
80 95
TEMPERATURE (°C)
0.1
THD + NOISE (%)
5
0.005
MAX4130/34-25a
0
VCC = +6.5V, RL = 100kΩ (TOP)
VCC = +2.7V, RL = 100kΩ (BOTTOM)
50
MAX4130/34-24
VCC = +6.5V, RL = 100kΩ
20
IN
OUT
TIME (2µs/div)
TIME (2µs/div)
_______________________________________________________________________________________
7
MAX4130–MAX4134
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = 0V, VCM = VCC / 2, TA = +25°C, unless otherwise noted.)
MAX4130–MAX4134
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
______________________________________________________________Pin Description
MAX4130
MAX4131
MAX4132
MAX4133
MAX4134
NAME
FUNCTION
1
6
—
—
—
OUT
Output
2
4
4
4
11
VEE
Negative Supply. Ground for single-supply
operation.
3
3
—
—
—
IN+
Noninverting Input
4
2
—
—
—
IN-
Inverting Input
5
7
8
14
4
VCC
Positive Supply
—
1, 5
—
5, 7, 8, 10
—
N.C.
No Connect. Not internally connected.
—
8
—
—
—
SHDN
Shutdown Control. Tie high or leave floating
to enable amplifier.
—
—
1, 7
1, 13
1, 7
OUT1,
OUT2
Outputs for amps 1 and 2
—
—
2, 6
2, 12
2, 6
IN1-, IN2-
—
—
3, 5
3, 11
3, 5
IN1+, IN2+
—
—
—
6, 9
—
SHDN1,
SHDN2
—
—
—
—
8, 14
OUT3,
OUT4
—
—
—
—
9, 13
IN3-, IN4-
—
—
—
—
10, 12
IN3+, IN4+
Inverting Inputs for amps 1 and 2
Noninverting Inputs for amps 1 and 2
Shutdown Control, independent for amps 1
and 2. Tie high or leave floating to enable
amplifier.
Outputs for amps 3 and 4
Inverting Inputs for amps 3 and 4
Noninverting Inputs for amps 3 and 4
MAX4130
MAX4131
MAX4132
MAX4133
MAX4134
MAX4130
MAX4131
MAX4132
MAX4133
MAX4134
R3
R3
R3 = R1
R3 = R1
R2
R1
R2
Figure 1a. Reducing Offset Error Due to Bias Current
(Noninverting)
8
R2
R1
R2
Figure 1b. Reducing Offset Error Due to Bias Current
(Inverting)
_______________________________________________________________________________________
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
Rail-to-Rail Input Stage
Devices in the MAX4130–MAX4134 family of highspeed amplifiers have rail-to-rail input and output
stages designed for low-voltage, single-supply operation. The input stage consists of separate NPN and
PNP differential stages that combine to provide an
input common-mode range that extends 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
transition region, which occurs near VCC / 2, has been
extended to minimize the slight degradation in common-mode rejection ratio 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.
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.
Reduce the offset error caused by input bias currents
flowing through external source impedances by matching the effective impedance seen by each input
(Figures 1a, 1b). High source impedances, together
with input capacitance, can create a parasitic pole that
produces an underdamped signal response. Reducing
the input impedance or placing a small (2pF to 10pF)
capacitor across the feedback resistor improves
response.
The MAX4130–MAX4134’s inputs are protected from
large differential input voltages by 1kΩ series resistors
and back-to-back triple diodes across the inputs
(Figure 2). For differential input voltages less than 1.8V,
input resistance is typically 500kΩ. For differential input
voltages greater than 1.8V, input resistance is approximately 2kΩ. The input bias current is given by the following equation:
IBIAS =
VDIFF - 1.8V
2kΩ
1k
1k
Figure 2. Input Protection Circuit
_______________________________________________________________________________________
9
MAX4130–MAX4134
__________Applications Information
Rail-to-Rail Output Stage
The minimum output voltage is within millivolts of
ground for single-supply operation where the load is
referenced to ground (VEE). Figure 3 shows the input
voltage range and output voltage swing of a MAX4131
connected as a voltage follower. With a +3V supply
and the load tied to ground, the output swings from
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).
Driving a capacitive load can cause instability in most
high-speed op amps, especially those with low quiescent current. The MAX4130–MAX4134 have a high tolerance for capacitive loads. They are stable with
capacitive loads up to 160pF. Figure 4 gives the stable
operating region for capacitive loads. Figures 5 and 6
show the response with capacitive loads and the
results of adding an isolation resistor in series with the
output (Figure 7). The resistor improves the circuit’s
phase margin by isolating the load capacitor from the
op amp’s output.
500
450
LOAD CAPACITANCE (pF)
VOLTAGE (1V/div)
VCC = 3V, RL = 10kΩ to VEE
IN
400
UNSTABLE
OPERATING
REGION
350
300
250
200
150
STABLE
OPERATING
REGION
100
OUT
RL to VEE
VOUT = VCC/2
50
0
TIME (1µs/div)
0.1
1
10
100
LOAD RESISTANCE (kΩ)
Figure 3. Rail-to-Rail Input/Output Voltage Range
VCC = 5V
CL = 1000pF
RS = 39Ω
VCC = 5V
RL = 10kΩ
CL = 130pF
IN
OUT
IN
OUT
TIME (200ns/div)
Figure 5. MAX4131 Small-Signal Transient Response with
Capacitive Load
10
Figure 4. Capacitive-Load Stability
VOLTAGE (50mV/div)
VOLTAGE (50mV/div)
MAX4130–MAX4134
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
TIME (500ns/div)
Figure 6. MAX4131 Transient Response to Capacitive Load
with Isolation Resistor
______________________________________________________________________________________
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
amplifiers are disabled with the outputs in a highimpedance state. Pulling SHDN high or leaving it floating enables the amplifier. In the dual-amplifier
MAX4133, the shutdown functions operate independently. Figures 11 and 12 show the output voltage and
supply current responses of the MAX4131 to a shutdown pulse, using the test circuit of Figure 8.
VCC
0V TO 2.7V STEP
FOR POWER-UP
TEST; 2.7V FOR
SHUTDOWN
ENABLE TEST.
*0.1µF
2k
OUT
RS
SHDN
0V TO 2.7V
STEP FOR
SHUTDOWN
TEST
CL
2k
10k
10Ω
SUPPLY-CURRENT
MONITORING POINT
*FOR SHUTDOWN TEST ONLY.
Figure 7. Capacitive-Load Driving Circuit
Figure 8. Power-Up/Shutdown Test Circuit
VCC
(1V/div)
OUT
IEE
(500µA/div)
VOLTAGE (1V/div)
VCC
TIME (5µs/div)
Figure 9. Power-Up Output Voltage
TIME (5µs/div)
Figure 10. Power-Up Supply Current
______________________________________________________________________________________
11
MAX4130–MAX4134
Power-Up and Shutdown Mode
The MAX4130–MAX4134 amplifiers typically settle within 1µs after power-up. Figures 9 and 10 show the output voltage and supply current on power-up, using the
test circuit of Figure 8.
The MAX4131 and MAX4133 have a shutdown option.
When the shutdown pin (SHDN) is pulled low, the supply current drops below 25µA per amplifier and the
SHDN
1V/div
SHDN
VOLTAGE (1V/div)
MAX4130–MAX4134
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
SUPPLY
CURRENT
500µA/div
OUT
TIME (1µs/div)
Figure 11. Shutdown Output Voltage
Power Supplies and Layout
The MAX4130–MAX4134 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 supply to ground.
12
TIME (1µs/div)
Figure 12. Shutdown Enable/Disable Supply Current
Good layout improves performance by decreasing the
amount of stray capacitance at the op amp’s inputs
and outputs. Decrease stray capacitance by placing
external components close to the op amp’s pins, minimizing trace lengths and resistor leads.
______________________________________________________________________________________
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
TOP VIEW
OUT 1
VEE 2
5
VCC
4
IN-
MAX4130
IN+ 3
SOT23-5
N.C. 1
OUT1 1
8
VCC
7
OUT2
IN1+ 3
6
IN2-
VEE 4
5
IN2+
8
SHDN
7
VCC
IN1- 2
IN1+ 3
6
OUT
VEE 4
5
N.C.
IN1- 2
MAX4131
MAX4132
SO/µMAX
SO/µMAX
OUT1 1
14 VCC
OUT1 1
14 OUT4
IN1- 2
13 OUT2
IN1- 2
13 IN4-
IN1+ 3
12 IN2-
IN1+ 3
12 IN4+
VEE 4
MAX4133
N.C. 5
VCC 4
10 N.C.
IN2+ 5
10 IN3+
IN2- 6
9
IN3-
OUT2 7
8
OUT3
SHDN1 6
9
SHDN2
N.C. 7
8
N.C.
SO
MAX4134
11 IN2+
11 VEE
SO
______________________________________________________________________________________
13
MAX4130–MAX4134
__________________________________________________________Pin Configurations
MAX4130–MAX4134
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
_Ordering Information (continued)
PART
TEMP. RANGE
PINPACKAGE
SOT
TOP MARK
MAX4132ESA
-40°C to +85°C
8 SO
—
MAX4132EUA
MAX4133C/D
MAX4133ESD
MAX4134ESD
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
8 µMAX
Dice*
14 SO
14 SO
—
—
—
—
___________________Chip Information
MAX4130 TRANSISTOR COUNT: 170
MAX4132 TRANSISTOR COUNT: 340
MAX4134 TRANSISTOR COUNT: 680
*Dice are specified at TA = +25°C, DC parameters only.
__________________________________________________________Chip Topographies
MAX4131
MAX4133
V CC
OUT1
V EE
IN-
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 VEE
SUBSTRATE CONNECTED TO VEE
14
______________________________________________________________________________________
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
b
DIM
e
A
A1
A2
b
C
D
E
E1
L
e
e1
α
E
e1
D
α
MILLIMETERS
MIN
MAX
0.90
1.45
0.00
0.15
0.90
1.30
0.35
0.50
0.08
0.20
2.80
3.00
2.60
3.00
1.50
1.75
0.35
0.55
0.95ref
1.90ref
0°
10°
21-0057B
E1
A A2
C
5-PIN SOT23-5
SMALL-OUTLINE
TRANSISTOR PACKAGE
L
A1
DIM
C
α
A
0.101mm
0.004 in
e
B
A1
L
A
A1
B
C
D
E
e
H
L
α
INCHES
MAX
MIN
0.044
0.036
0.008
0.004
0.014
0.010
0.007
0.005
0.120
0.116
0.120
0.116
0.0256
0.198
0.188
0.026
0.016
6°
0°
MILLIMETERS
MIN
MAX
0.91
1.11
0.10
0.20
0.25
0.36
0.13
0.18
2.95
3.05
2.95
3.05
0.65
4.78
5.03
0.41
0.66
0°
6°
21-0036D
E
H
8-PIN µMAX
MICROMAX SMALL-OUTLINE
PACKAGE
D
______________________________________________________________________________________
15
MAX4130–MAX4134
________________________________________________________Package Information
MAX4130–MAX4134
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
___________________________________________Package Information (continued)
DIM
D
0°-8°
A
0.101mm
0.004in.
e
B
A1
E
C
L
Narrow SO
SMALL-OUTLINE
PACKAGE
(0.150 in.)
H
A
A1
B
C
E
e
H
L
INCHES
MAX
MIN
0.069
0.053
0.010
0.004
0.019
0.014
0.010
0.007
0.157
0.150
0.050
0.244
0.228
0.050
0.016
DIM PINS
D
D
D
8
14
16
MILLIMETERS
MIN
MAX
1.35
1.75
0.10
0.25
0.35
0.49
0.19
0.25
3.80
4.00
1.27
5.80
6.20
0.40
1.27
INCHES
MILLIMETERS
MIN MAX
MIN
MAX
0.189 0.197 4.80
5.00
0.337 0.344 8.55
8.75
0.386 0.394 9.80 10.00
21-0041A
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 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 1997 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.