MAX4038EUA-T Maxim Integrated Products, MAX4038EUA-T Datasheet

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MAX4038EUA-T

Manufacturer Part Number
MAX4038EUA-T
Description
Op Amps 1.4V/800nA Rail-Rail w/1.2V Buffered Ref
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX4038EUA.pdf (19 pages)

Specifications of MAX4038EUA-T

Number Of Channels
2
Voltage Gain Db
108 dB
Common Mode Rejection Ratio (min)
50 dB
Input Offset Voltage
2 mV
Operating Supply Voltage
3 V
Supply Current
0.0025 mA
Maximum Power Dissipation
362 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
uSOP
Minimum Operating Temperature
- 40 C
The single MAX4036/MAX4037 and dual MAX4038/
MAX4039 operational amplifiers operate from a single
+1.4V to +3.6V (without reference) or +1.8V to +3.6V (with
reference) supply and consume only 800nA of supply
current per amplifier, and 1.1µA for the optional refer-
ence. The MAX4036/MAX4038 feature a common-mode
input voltage range from 0V to V
The MAX4037/MAX4039 feature a 1.232V voltage refer-
ence capable of sourcing 100µA and sinking 20µA.
The MAX4036–MAX4039s’ rail-to-rail outputs drive 5k
loads to within 25mV of the rails. Ultra-low supply current,
low operating voltage, and rail-to-rail outputs make the
MAX4036–MAX4039 ideal for use in single-cell lithium-ion
(Li+), or two-cell NiCd/NiMH/alkaline battery-powered
applications.
The MAX4036 is available in an SC70 package, the
MAX4037 in a SOT23 package, and the MAX4038/
MAX4039 in UCSP™, µMAX
19-3142; Rev 4; 3/06
Pin Configurations and Selector Guide appear at end of
data sheet.
µMAX is a registered trademark and UCSP is a trademark of
Maxim Integrated Products, 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.
Low I
Battery-Powered/Solar-Powered Systems
Portable Medical Instrumentation
Pagers and Cell Phones
Micropower Thermostats and Potentiostats
Electrometer Amplifiers
Remote Sensor Amplifiers
Active Badges
pH Meters
OUTA
INA-
INA+
REF
V
SS
________________________________________________________________ Maxim Integrated Products
REF
BIAS
General Description
Functional Diagram
MAX4039
®
, and TDFN packages.
, +1.4V/800nA, Rail-to-Rail Op Amps
DD
- 0.4V at V
Applications
OUTB
INB+
INB-
V
DD
with +1.2V Buffered Reference
DD
= 1.4V.
♦ Ultra-Low 800nA per Amplifier Supply Current
♦ Ultra-Low 1.4V Supply Voltage Operation (1.8V for
♦ Rail-to-Rail Outputs Drive 5k and 5000pF Load
♦ 1.232V ±0.5%, 120ppm/°C (max) Reference
♦ No External Reference Bypass Capacitor
♦ No Phase Reversal for Overdriven Inputs
♦ Low 1.0pA (typ) Input Bias Current
♦ Low 200µV Input Offset Voltage
♦ Unity-Gain Stable
♦ Available in Tiny UCSP, SC70, SOT23, TDFN, and
♦ Available in -40°C to +125°C Temperature Range
+Denotes lead-free package.
*EP = Exposed paddle.
Ordering Information continued at end of data sheet.
MAX4036EXK-T
MAX4036AAXK+T
MAX4037EUT-T
MAX4038ETA-T
MAX4038EUA
MAX4038EBL-T
MAX4038AAUA
MAX4037/MAX4039)
(MAX4037/MAX4039)
Required
µMAX Packages
(MAX4036A/MAX4038A)
PART
3V
THREE-ELECTRODE POTENTIOSTAT APPLICATION
V
INA+
REF
INB+
Typical Operating Circuit
DD
-40°C to +125°C
-40°C to +125°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
TEMP RANGE
MAX4039
Ordering Information
V
SS
OUTA
OUTB
INA-
INB-
PIN-
PACKAGE
5 SC70-5
5 SC70-5
6 SOT23-6
8 TDFN-EP*
8 µMAX
9 UCSP-9
8 µMAX
Features
SENSOR
ADC
MARK
ABRX
AGO
TOP
AEG
AFR
ASN
—
—
1

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MAX4038EUA-T Summary of contents

Page 1

... Available in Tiny UCSP, SC70, SOT23, TDFN, and µMAX Packages ♦ Available in -40°C to +125°C Temperature Range (MAX4036A/MAX4038A) Applications PART MAX4036EXK-T MAX4036AAXK+T MAX4037EUT-T MAX4038ETA-T MAX4038EUA MAX4038EBL-T MAX4038AAUA +Denotes lead-free package. *EP = Exposed paddle. Ordering Information continued at end of data sheet OUTB INB- ...

Page 2

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS with +1.2V Buffered Reference ABSOLUTE MAXIMUM RATINGS .............................................................-0.3V to +4. INA+, INB+, INA-, INB-, IN+, IN-, OUTA, OUTB, OUT, REF .........................(V SS OUTA, OUTB, OUT, REF Shorted ...

Page 3

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS ELECTRICAL CHARACTERISTICS (continued +3V 0V OUT_ PARAMETER SYMBOL Large-Signal Voltage Gain Output Voltage Swing High V DD Output Voltage Swing ...

Page 4

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS with +1.2V Buffered Reference ELECTRICAL CHARACTERISTICS (continued +3V 0V OUT_ PARAMETER SYMBOL Supply Current OPERATIONAL AMPLIFIERS Input Offset Voltage Input ...

Page 5

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS ( MAX4036 SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE 1 + +25 ...

Page 6

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS with +1.2V Buffered Reference ( OUTPUT VOLTAGE SWING HIGH vs. TEMPERATURE ...

Page 7

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS ( AMP SOURCE CURRENT vs. OUTPUT VOLTAGE 3. ...

Page 8

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS with +1.2V Buffered Reference ( GAIN AND PHASE vs. FREQUENCY 80 70 GAIN 60 50 ...

Page 9

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS ( REFERENCE LOAD-TRANSIENT RESPONSE (SINKING CURRENT REF REF 500mV/div 0 2.5ms/div REFERENCE ...

Page 10

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS with +1.2V Buffered Reference PIN MAX4038/ MAX4036/ MAX4038A MAX4037 MAX4036A µMAX*/TDFN UCSP µMAX/TDF 1 3 — — — — 5 — — ...

Page 11

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS Applications Information Power-Supply Considerations The MAX4036–MAX4039 operate from a single 1.4V (MAX4036/MAX4038) or 1.8V (MAX4037/MAX4039) to 3.6V supply. A high amplifier power-supply rejection ratio of 82dB and the excellent reference line regulation ...

Page 12

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS with +1.2V Buffered Reference 3) Calculate R1 × Ω × = 210 k Ω 4) Choose the threshold voltage for ...

Page 13

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS TOP VIEW IN+ 1 MAX4036 MAX4036A IN- 3 SC70 OUTA 1 INA- 2 MAX4038 3 MAX4038A INA MAX OUTA 1 2 INA- MAX4039 3 INA+ 4 ...

Page 14

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS with +1.2V Buffered Reference (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 14 ______________________________________________________________________________________ Package Information PACKAGE ...

Page 15

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ with +1.2V Buffered Reference Package Information (continued) PACKAGE ...

Page 16

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS with +1.2V Buffered Reference (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages Ø0.50±0.1 0.6±0.1 ...

Page 17

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) PIN 1 INDEX AREA -DRAWING NOT TO SCALE- COMMON ...

Page 18

Low I , +1.4V/800nA, Rail-to-Rail Op Amps BIAS with +1.2V Buffered Reference (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages Ø 0.50±0.1 0.6±0.1 ...

Page 19

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19 © 2006 Maxim Integrated Products with +1 ...

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