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MAX4236EUT-T

P1-P3P4-P6P7-P9P10-P12P13-P14
General Description
The MAX4236/MAX4237 are high-precision op amps
that feature an exceptionally low offset voltage and off-
set voltage temperature coefficient without using any
chopper techniques. The MAX4236 and MAX4237 have
a typical large-signal, open-loop voltage gain of 120dB.
These devices have an ultra-low input-bias current of
1pA. The MAX4236 is unity-gain stable with a gain-
bandwidth product of 1.7MHz, while the MAX4237 is
stable for closed-loop gains greater than 5V/V with a
gain-bandwidth product of 7.5MHz. Both devices have
a shutdown function in which the quiescent current is
reduced to less than 0.1µA, and the amplifier output is
forced into a high-impedance state.
The input common-mode range of the MAX4236/
MAX4237 extends below the negative supply range, and
the output swings Rail-to-Rail
®
. These features make the
amplifiers ideal for applications with +3V or +5V single
power supplies. The MAX4236/MAX4237 are specified for
the extended temperature range (-40°C to +85°C) and
are available in tiny SOT23, µMAX, and SO packages. For
greater accuracy, the A grade µMAX and SO packages
are tested to guarantee 20µV (max) offset voltage at
+25°C and less then 2µV/°C drift.
Applications
Strain Gauges
Piezoelectric Sensors
Thermocouple Amplifiers
Electrochemical Sensors
Battery-Powered Instrumentation
Instrumentation Amplifiers
Features
♦ Ultra-Low Offset Voltage
20µV (max) at +25°C (Grade A)
50µV (max) at +25°C (Grade B, 6-Pin SOT23)
♦ Ultra-Low Offset Voltage Drift
2µV/°C (max) (Grade A)
4.5µV/°C (max) (Grade B, 6-Pin SOT23)
5.5µV/°C (max) (6-Pin SOT23)
♦ Ultra-Low 1pA Input Bias Current
♦ High Open-Loop Voltage Gain: 110dB (min)
(R
L
= 100kΩ)
♦ Compatible with +3V and +5V Single-Supply
Power Systems
♦ Ground Sensing: Input Common-Mode Range
Includes Negative Rail
♦ Rail-to-Rail Output Swing into a 1kΩ Load
♦ 350µA Quiescent Current
♦ Gain-Bandwidth Product
1.7MHz (MAX4236, A
V
= 1V/V)
7.5MHz (MAX4237, A
V
= 5V/V)
♦ 200pF Capacitive Load Handling Capability
♦ Shutdown Mode: 0.1µA Quiescent Current,
Places Output in a High-Impedance State
♦ Available in Space-Saving SOT23 and µMAX
Packages
MAX4236/MAX4237
SOT23, Very High Precision, 3V/5V
Rail-to-Rail Op Amps
________________________________________________________________ Maxim Integrated Products 1
TOP VIEW
V
EE
IN-IN+
16V
CC
5 SHDN
OUT
MAX4236
MAX4237
SOT23-6
2
34
1
2
3
4
8
7
6
5
V
CC
OUT
N.C.V
EE
IN+
IN-
N.C.
MAX4236A/B
MAX4237A/B
SO-8/µMAX
SHDN
Pin Configurations
Ordering Information
19-2110; Rev 0; 8/01
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.
PART TEMP. RANGE PIN-PACKAGE
MAX4236EUT-T -40°C to +85°C 6 SOT23-6
MAX4236AEUA -40°C to +85°C 8 µMAX
MAX4236BEUA -40°C to +85°C 8 µMAX
MAX4236AESA -40°C to +85°C 8 SO
MAX4236BESA -40°C to +85°C 8 SO
MAX4237EUT-T -40°C to +85°C 6 SOT23-6
MAX4237AEUA -40°C to +85°C 8 µMAX
MAX4237BEUA -40°C to +85°C 8 µMAX
MAX4237AESA -40°C to +85°C 8 SO
MAX4237BESA -40°C to +85°C 8 SO
Rail-to-Rail is a registered trademark of Nippon Motorola, Inc.
MAX4236/MAX4237
SOT23, Very High Precision, 3V/5V
Rail-To-Rail Op Amps
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS (SO-8 and µMAX-8)
(V
CC
= +2.4V to +5.5V, V
EE
= 0, V
CM
= 0, V
OUT
= V
CC
/2, R
L
= 100kΩ to V
CC
/2, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at V
CC
= +5V and T
A
= +25°C.) (Note 1)
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
)......................................-0.3V to +6V
Analog Input Voltage (IN+ or IN-)....(V
EE
- 0.3V) to (V
CC
+ 0.3V)
Logic Input Voltage (SHDN) ............(V
EE
- 0.3V) to (V
CC
+ 0.3V)
Current into Any Pin ............................................................20mA
Output Short-Circuit Duration....Continuous to Either V
CC
or V
EE
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23-6 (derate 8.7mW/°C above +70°C) .........696mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) ..............362mW
8-Pin SO (derate 5.9mW/°C above +70°C)...................471mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
CC
Guaranteed by the PSRR test 2.4 5.5 V
In normal mode 350 440
V
CC
= +5V
In shutdown mode 0.1 2
In normal mode 350 440
Quiescent Supply Current I
CC
V
CC
= +3V
In shutdown mode 0.1 2
µA
T
A
= +25
o
C ±5 ±20
V
CC
= +5V,
Grade A
T
A
= T
MIN
to T
MAX
±150
T
A
= +25
o
C ±5 ±50
Input Offset Voltage V
OS
V
CC
= +5V,
Grade B
T
A
= T
MIN
to T
MAX
±340
µV
Grade A ±0.6 ±2
Inp ut Offset V ol tag e Tem p er atur e
C oeffi ci ent
TCV
OS
V
CC
= +5V
(Note 3)
Grade B ±0.6 ±4.5
µV/°C
Input Bias Current I
B
(Note 2) ±1 ±500 pA
Input Offset Current I
OS
(Note 2) ±1 pA
Input Resistance R
IN
Differential or common mode 1000 MΩ
Input Common-Mode Voltage V
CM
Guaranteed by the CMRR test -0.15 V
C C
- 1.2 V
T
A
= +25
o
C 84 102
V
CC
= +5V;
-0.15V ≤ V
CM
≤
(V
CC
- 1.2V)
T
A
= T
MIN
to T
MAX
80
T
A
= +25
o
C 82 102
Common-Mode Rejection Ratio CMRR
V
CC
= +3.0V;
-0.15V ≤ V
CM
≤
(V
CC
- 1.2V)
T
A
= T
MIN
to T
MAX
78
dB
T
A
= +25
o
C 97 120
Power-Supply Rejection Ratio PSRR
V
CC
= +2.4V to
+5.5V
T
A
= T
MIN
to T
MAX
95
dB
MAX4236/MAX4237
SOT23, Very High Precision, 3V/5V
Rail-To-Rail Op Amps
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (SO-8 and µMAX-8) (continued)
(V
CC
= +2.4V to +5.5V, V
EE
= 0, V
CM
= 0, V
OUT
= V
CC
/2, R
L
= 100kΩ to V
CC
/2, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at V
CC
= +5V and T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
R
L
= 100kΩ, V
OUT
=
15mV to (V
CC
- 50mV)
110 128
V
CC
= +5V, R
L
connected to
V
CC
/2,
T
A
= +25
o
C
R
L
= 1kΩ, V
OUT
=
0.15V to (V
CC
- 0.3V)
105 114
R
L
= 100kΩ, V
OUT
=
15mV to (V
CC
- 50mV)
110
V
CC
= +5V, R
L
connected to
V
CC
/2,
T
A
= T
MIN
to
T
MAX
R
L
= 1kΩ,
V
OUT
= 0.15V
to (V
CC
- 0.3V)
100
R
L
= 100kΩ, V
OUT
=
15mV to (V
CC
- 50mV)
110 128
V
CC
= +3V, R
L
connected to
V
CC
/2,
T
A
= +25
o
C
R
L
= 1kΩ,
V
OUT
= 0.15V
to (V
CC
- 0.3V)
100 114
R
L
= 100kΩ, V
OUT
=
15mV to (V
CC
- 50mV)
105
Large-Signal Voltage Gain A
VOL
V
CC
= +3V, R
L
connected to
V
CC
/2,
T
A
= T
MIN
to
T
MAX
R
L
= 1kΩ,
V
OUT
= 0.15V
to (V
CC
- 0.3V)
95
dB
V
CC
- V
OH
210
V
CC
= +5V,
R
L
connected to V
CC
/2,
R
L
= 100kΩ
V
OL -
V
EE
310
V
CC
- V
OH
150 250
Output Voltage Swing V
OUT
V
CC
= +5V,
R
L
connected to V
CC
/2,
R
L
= 1kΩ
V
OL -
V
EE
50 100
mV
Shorted to V
EE
10
Output Short-Circuit Current I
OUT
(
SC
)
Shorted to V
CC
30
mA
MAX4236 1.7
Gain-Bandwidth Product GBWP R
L
= ∞, C
L
= 5pF
MAX4237 7.5
MHz
MAX4236 0.3
Slew Rate SR V
CC
= +5V, V
OUT
= 4V step
MAX4237 1.3
V/µs
MAX4236 1
Settling Time t
S
V
OUT
settling to within
0.01%
MAX4237 1
µs
Total Harmonic Distortion THD
f = 5kHz, V
OUT
= 2Vp-p, V
CC
= +5V
R
L
= 10kΩ
0.001 %
P1-P3P4-P6P7-P9P10-P12P13-P14

MAX4236EUT-T

Mfr. #:
Buy MAX4236EUT-T
Manufacturer:
Maxim Integrated
Description:
Precision Amplifiers Precision 3V/5V Rail-Rail
Lifecycle:
New from this manufacturer.
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