MAX4237 Maxim, MAX4237 Datasheet

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MAX4237

Manufacturer Part Number
MAX4237
Description
The MAX4236/MAX4237 are high-precision op amps that feature an exceptionally low offset voltage and offset voltage temperature coefficient without using any chopper techniques
Manufacturer
Maxim
Datasheet

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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
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.
19-2110; Rev 0; 8/01
Rail-to-Rail is a registered trademark of Nippon Motorola, Inc.
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.
TOP VIEW
OUT
V
IN+
EE
Strain Gauges
Piezoelectric Sensors
Thermocouple Amplifiers
Electrochemical Sensors
Battery-Powered Instrumentation
Instrumentation Amplifiers
1
2
3
SOT23-6
MAX4236
MAX4237
________________________________________________________________ Maxim Integrated Products
4
6
5
V
SHDN
IN-
General Description
CC
Pin Configurations
®
N.C.
IN+
V
IN-
. These features make the
EE
SOT23, Very High Precision, 3V/5V
1
2
3
4
Applications
SO-8/ MAX
MAX4236A/B
MAX4237A/B
8
7
6
5
SHDN
V
OUT
N.C.
CC
MAX4236EUT-T
MAX4236AEUA
MAX4236BEUA
MAX4236AESA
MAX4236BESA
MAX4237EUT-T
MAX4237AEUA
MAX4237BEUA
MAX4237AESA
MAX4237BESA
Ultra-Low Offset Voltage
Ultra-Low Offset Voltage Drift
Ultra-Low 1pA Input Bias Current
High Open-Loop Voltage Gain: 110dB (min)
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 1k Load
350µA Quiescent Current
Gain-Bandwidth Product
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
20µV (max) at +25°C (Grade A)
50µV (max) at +25°C (Grade B, 6-Pin SOT23)
2µV/°C (max) (Grade A)
4.5µV/°C (max) (Grade B, 6-Pin SOT23)
5.5µV/°C (max) (6-Pin SOT23)
(R
1.7MHz (MAX4236, A
7.5MHz (MAX4237, A
Rail-to-Rail Op Amps
PART
L
= 100k )
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Ordering Information
V
V
= 1V/V)
= 5V/V)
PIN-PACKAGE
6 SOT23-6
8 µMAX
8 µMAX
8 SO
8 SO
6 SOT23-6
8 µMAX
8 µMAX
8 SO
8 SO
Features
1

Related parts for MAX4237

MAX4237 Summary of contents

Page 1

... 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 ...

Page 2

... SO (derate 5.9mW/°C above +70°C)...................471mW 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. ELECTRICAL CHARACTERISTICS (SO-8 and µ ...

Page 3

... CC = OUT 110 - 50mV) CC 100 - 0.3V) = OUT 110 128 - 50mV) CC 100 114 - 0.3V) = OUT 105 - 50mV 0.3V 150 250 100 MAX4236 1.7 MAX4237 7.5 MAX4236 0.3 MAX4237 1.3 MAX4236 1 MAX4237 1 0.001 UNITS MHz V/µs µ ...

Page 4

... +25° +3.0V; -0.15V 1.2V unless otherwise noted. Typical A MIN MAX MIN TYP MAX 7.5 14 0.2 MAX4236 200 MAX4237 200 ) EE ±0.01 ±1.0 0 unless otherwise noted. Typical A MIN MAX MIN TYP MAX 2.4 350 440 0.1 350 440 0 ...

Page 5

... Shorted Shorted MAX4236 15pF L L MAX4237 MAX4236 V = +5V step MAX4237 OUT = unless otherwise noted. Typical A MIN MAX MIN TYP MAX 97 120 MAX 110 128 100 114 = OUT 110 - 50mV ...

Page 6

... TCV ( unless otherwise noted. Typical A MIN MAX MIN TYP MAX MAX4236 1 MAX4237 1 0.001 7.5 14 0.2 MAX4236 200 MAX4237 200 ) EE ±0.01 ±1 are 100% tested for the A-grade OFFSET VOLTAGE vs. TEMPERATURE -20 -40 -60 -80 2.0 ...

Page 7

... INPUT VOLTAGE NOISE vs. FREQUENCY 0.01 0 FREQUENCY (kHz) COMMON-MODE REJECTION RATIO vs. FREQUENCY (V CC 120 100 0.01 0 100 5 FREQUENCY (kHz) MAX4237 OPEN-LOOP GAIN/PHASE vs. FREQUENCY 140 PHASE 120 100 GAIN 5V/ 15pF/200pF L 0 -20 0.001 0.01 0 100 1000 10,000 FREQUENCY (kHz) TOTAL HARMONIC DISTORTION PLUS NOISE vs ...

Page 8

... CC A SUPPLY CURRENT vs. SUPPLY VOLTAGE 345 340 335 330 T = +125 C A 325 320 315 125 2.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) MAXIMUM OUTPUT VOLTAGE vs. TEMPERATURE 200 180 160 CC L 140 120 100 5V/3V 100k ...

Page 9

... 5V/V V SHORT-CIRCUIT CURRENT vs. TEMPERATURE SHORTED (SOURCING CURRENT) 0 -50 - 100 TEMPERATURE ( C) DC I/O TRANSFER CURVE ( LOAD 2 2.5V SUPPLY 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 -2.5 -100 - DIFFERENTIAL INPUT VOLTAGE ( V) MAX4237 MAX4236 toc29 INPUT 10mV/div OUTPUT 50mV/div 1 s/div C = 15pF L 125 100 9 ...

Page 10

... CC A NONINVERTING LARGE-SIGNAL RESPONSE MAX4236 toc30 INPUT 0 200mV/div 0 OUTPUT 1V/div NONINVERTING LARGE-SIGNAL RESPONSE MAX4236 toc32 INPUT 1V/div 0 OUTPUT 1V/div MAX4237 MAX4236 toc31 INPUT 200mV/div OUTPUT 1V/div 1 s/div = 2. 100k C = 15pF 5V/V V MAX4236 MAX4236 toc33 INPUT 1V/div OUTPUT 1V/div 4 s/div = 2.5V ...

Page 11

... V — N.C. Detailed Description The MAX4236/MAX4237 are high-precision op amps with a CMOS input stage and an excellent set of DC and AC features. The combination of tight maximum voltage offset, low offset tempco and very low input current make them ideal for use in high-precision DC circuits. They feature low-voltage operation, low-power consumption, high-current drive with rail-to-rail output swing and high-gain bandwidth product ...

Page 12

... Rail-To-Rail Op Amps current, low-noise inputs allow a minimum of capaci- tance to be used. Piezoresistive transducers applications require many of the same qualities. For those applications the MAX4236/MAX4237 high CMRR, PSRR, and offset sta- bility are also a good match. A typical application for a piezoresistive transducer instrumentation amplifier ...

Page 13

SOT23, Very High Precision, 3V/5V ______________________________________________________________________________________ Rail-To-Rail Op Amps Package Information 13 ...

Page 14

... Rail-To-Rail Op Amps Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied ...

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