________________General Description
The MAX4040–MAX4044 family of micropower op amps
operates from a single +2.4V to +5.5V supply or dual
±1.2V to ±2.75V supplies and have rail-to-rail input and
output capabilities. These amplifiers provide a 90kHz
gain-bandwidth product while using only 10µA of supply
current per amplifier. The MAX4041/MAX4043 have a
low-power shutdown mode that reduces supply current
to less than 1µA and forces the output into a high-imped-
ance state. The combination of low-voltage operation,
rail-to-rail inputs and outputs, and ultra-low power con-
sumption makes these devices ideal for any
portable/battery-powered system.
These amplifiers have outputs that typically swing to
within 10mV of the rails with a 100k load. Rail-to-rail
input and output characteristics allow the full power-
supply voltage to be used for signal range. The combi-
nation of low input offset voltage, low input bias current,
and high open-loop gain makes them suitable for low-
power/low-voltage precision applications.
The MAX4040 is offered in a space-saving 5-pin SOT23
package. All specifications are guaranteed over the
-40°C to +85°C extended temperature range.
________________________Applications
Battery-Powered Strain Gauges
Systems
Sensor Amplifiers
Portable/Battery-Powered Cellular Phones
Electronic Equipment
Notebook Computers
Digital Scales PDAs
____________________________Features
Single-Supply Operation Down to +2.4V
Ultra-Low Power Consumption:
10µA Supply Current per Amplifier
A Shutdown Mode (MAX4041/MAX4043)
Rail-to-Rail Input Common-Mode Range
Outputs Swing Rail-to-Rail
No Phase Reversal for Overdriven Inputs
200µV Input Offset Voltage
Unity-Gain Stable for Capacitive Loads up to 200pF
90kHz Gain-Bandwidth Product
Available in Space-Saving 5-Pin SOT23 and
8-Pin µMAX
®
Packages
MAX4040–MAX4044
Single/Dual/Quad, Low-Cost, SOT23,
Micropower Rail-to-Rail I/O Op Amps
________________________________________________________________ Maxim Integrated Products 1
V
EE
IN-IN+
15V
CC
OUT
MAX4040
SOT23-5
TOP VIEW
2
34
19-1377; Rev 1; 9/05
PART
MAX4040EUK-T
MAX4040EUA
MAX4040ESA -40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
PIN-
PACKAGE
5 SOT23-5
8 µMAX
8 SO
Ordering Information
Pin Configurations continued at end of data sheet.
NO. OF
AMPS
PIN-PACKAGE
MAX4040 1
5-pin SOT23,
8-pin µMAX/SO
PART
MAX4041 1 8-pin µMAX/SO
SHUTDOWN
Yes
MAX4044 4 14-pin SO
µMAX is a registered trademark of Maxim Integrated Products, Inc.
MAX4042EUA
MAX4042ESA -40°C to +85°C
-40°C to +85°C 8 µMAX
8 SO
MAX4044ESD
-40°C to +85°C 14 SO
SOT
TOP MARK
ACGF
Pin Configurations
Selector Guide
MAX4042 2 8-pin µMAX/SO
MAX4043 2
10-pin µMAX/
14-pin SO
Yes
MAX4041ESA
MAX4041EUA -40°C to +85°C
-40°C to +85°C 8 SO
8 µMAX
MAX4043EUB
MAX4043ESD -40°C to +85°C
-40°C to +85°C 10 µMAX
14 SO
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX4040–MAX4044
Single/Dual/Quad, Low-Cost, SOT23,
Micropower, Rail-to-Rail I/O Op Amps
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—T
A
= +25°C
(V
CC
= +5.0V, V
EE
= 0V, V
CM
= 0V, V
OUT
= V
CC
/ 2, SHDN = V
CC
, R
L
= 100ktied to V
CC
/ 2, 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
to V
EE
)..................................................+6V
All Other Pins ...................................(V
CC
+ 0.3V) to (V
EE
- 0.3V)
Output Short-Circuit Duration to V
CC
or V
EE
..............Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SOT23 (derate 7.1mW/°C above +70°C).............571mW
8-Pin µMAX (derate 4.1mW/°C above +70°C) ..............330mW
8-Pin SO (derate 5.88mW/°C above +70°C).................471mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
14 20V
CC
= 5.0V
(Note 1)Input Offset Current I
OS
±0.5 ±3.0 nA
(Note 1)
V
IN+
- V
IN-
< 1.0V
Differential Input
Resistance
R
IN(DIFF)
45 M
2.0 5.0
V
IN+
- V
IN-
> 2.5V
SHDN = V
EE
, MAX4041
and MAX4043 only
Large-Signal
Voltage Gain
Shutdown Supply
Current per Amplifier
I
CC(SHDN)
1.0
Supply-Voltage Range V
CC
2.4 5.5 VInferred from PSRR test
Output Voltage
Swing High
4.4 k
V
OH
Inferred from the CMRR test
mV
A
VOL
dB
PARAMETER SYMBOL MIN TYP MAX UNITS
Supply Current
per Amplifier
I
CC
10
µA
94
V
CC
= 2.4V
10
Specified as
V
CC
- V
OH
Power-Supply
Rejection Ratio
PSRR dB
(V
EE
+ 0.2V) V
OUT
(V
CC
- 0.2V)
60 90
74 85
Output Voltage
Swing Low
Input Common-Mode
Voltage Range
R
L
= 100k
R
L
= 25k
R
L
= 100k
R
L
= 25k
µA
V
CM
V
EE
V
CC
V
2.4V V
CC
5.5V 75 85
V
CC
= 2.4V
V
OL
mV
10
Specified as
V
EE
- V
OL
Input Bias Current I
B
±2 ±10 nA
40 60
R
L
= 100k
R
L
= 25k
Output Short-Circuit
Current
I
OUT(SC)
mA
0.7Sourcing
2.5
Channel-to-Channel
Isolation
Sinking
dB
CONDITIONS
80Specified at DC, MAX4042/MAX4043/MAX4044 only
V
CC
= 5.0V
±0.20 ±2.0
V
OS
Input Offset Voltage
mV
±0.25 ±2.5
V
EE
V
CM
V
CC
70 94
dBCMRR
Common-Mode
Rejection Ratio
MAX404_EU_
All other packages
65 94
V
EE
V
CM
V
CC
MAX4044ESD
MAX404_EU_
All other packages mV±0.20 ±1.50
Single/Dual/Quad, Low-Cost, SOT23,
Micropower, Rail-to-Rail I/O Op Amps
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—T
A
= +25°C (continued)
(V
CC
= +5.0V, V
EE
= 0V, V
CM
= 0V, V
OUT
= V
CC
/ 2, SHDN = V
CC
, R
L
= 100ktied to V
CC
/ 2, unless otherwise noted.)
MAX4040–MAX4044
PARAMETER SYMBOL MIN TYP MAX UNITSCONDITIONS
Supply Current
per Amplifier
I
CC
28
Supply-Voltage Range V
CC
2.4 5.5 VInferred from PSRR test
(Note 1)Input Offset Current I
OS
±8 nA
Input Voltage Noise Density e
n
70
nV/Hz
Input Current Noise Density i
n
0.05
pA/Hz
Capacitive-Load Stability 200 pF
Power-Up Time t
ON
200 µs
Input Capacitance C
IN
3 pF
f = 1kHz
f = 1kHz
A
VCL
= +1V/V, no sustained oscillations
Slew Rate SR 40 V/ms
Total Harmonic Distortion THD 0.05 %
Settling Time to 0.01% t
S
50 µs
f
IN
= 1kHz, V
OUT
= 2Vp-p, A
V
= +1V/V
A
V
= +1V/V, V
OUT
= 2V
STEP
PARAMETER SYMBOL MIN TYP MAX UNITSCONDITIONS
Gain Margin G
m
18 dB
Output Leakage Current in
Shutdown
I
OUT(SHDN)
20 100 nA
SHDN = V
EE
= 0, MAX4041/MAX4043 only
(Note 2)
µA
6.0
SHDN = V
EE
, MAX4041 and MAX4043 only
Shutdown Supply
Current per Amplifier
I
CC(SHDN)
µA
Shutdown Time t
SHDN
50 µsMAX4041 and MAX4043 only
Enable Time from Shutdown t
EN
150 µsMAX4041 and MAX4043 only
ELECTRICAL CHARACTERISTICS—T
A
= T
MIN
to
T
MAX
(V
CC
= +5.0V, V
EE
= 0V, V
CM
= 0V, V
OUT
= V
CC
/ 2, SHDN = V
CC
, R
L
= 100ktied to V
CC
/ 2, unless otherwise noted.) (Note 3)
Input Offset Voltage Drift TC
VOS
2 µV/°C
(Note 1)Input Bias Current I
B
±20 nA
Phase Margin
Φ
m
68 degrees
±4.5
SHDN Logic Low
V
IL
0.3 x V
CC
VMAX4041/MAX4043 only
SHDN Logic High
V
IH
0.7 x V
CC
VMAX4041/MAX4043 only
SHDN Input Bias Current
I
IH
, I
IL
40 120 nAMAX4041/MAX4043 only
Gain Bandwidth Product GBW 90 kHz
±5.0V
OS
Input Offset Voltage mV
±3.5
V
EE
V
CM
V
CC
MAX4044ESA
All other packages
MAX404_EU_

MAX4040ESA+T

Mfr. #:
Manufacturer:
Maxim Integrated
Description:
Operational Amplifiers - Op Amps uPower Rail-Rail
Lifecycle:
New from this manufacturer.
Delivery:
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