General Description
The MAX4464/MAX4470/MAX4471/MAX4472/MAX4474
family of micropower op amps operate from a single
+1.8V to +5.5V supply and draw only 750nA of supply
current. The MAX4470 family feature ground-sensing
inputs and Rail-to-Rail
output. The ultra-low supply
current, low-operating voltage, and rail-to-rail output
capabilities make these operational amplifiers ideal for
use in single lithium ion (Li+), or two-cell NiCd or alka-
line battery systems.
The rail-to-rail output stage of the MAX4464/MAX4470/
MAX4471/MAX4472/MAX4474 amplifiers is capable of
driving the output voltage to within 4mV of the rail with a
100k
load, and can sink and source 11mA with a +5V
supply. These amplifiers are available in both fully com-
pensated and decompensated versions. The single
MAX4470, dual MAX4471, and the quad MAX4472 are
unity-gain stable. The single MAX4464 and the dual
MAX4474 are stable for closed-loop gain configurations
of
≥
+5V/V. These amplifiers are available in space-sav-
ing SC70, SOT23, μMAX, and TSSOP packages.
Applications
Electrometer Amplifiers
Solar-Powered Systems
Remote Sensor Active
Badges
pH Meters
Features
o
Ultra-Low 750nA Supply Current Per Amplifier
o
Ultra-Low +1.8V Supply Voltage Operation
o
Ground-Sensing Input Common-Mode Range
o
Outputs Swing Rail-to-Rail
o
Outputs Source and Sink 11mA of Load Current
o
No Phase Reversal for Overdriven Inputs
o
High 120dB Open-Loop Voltage Gain
o
Low 500μV Input Offset Voltage
o
9kHz Gain-Bandwidth Product
(MAX4470/MAX4471/MAX4472)
o
40kHz Gain-Bandwidth Product
(MAX4464/MAX4474)
o
250pF (min) Capacitive Load Capability
o
Available in Tiny 5-Pin SC70 and 8-Pin SOT23
Packages
M
Single/Dual/Quad, +1.8V/750nA, SC70,
Rail-to-Rail Op Amps
________________________________________________________________
Maxim Integrated Products
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.
1
V
SS
OUT
IN-
1
5
V
DD
IN+
MAX4470
MAX4464
SC70/SOT23
TOP VIEW
2
3
4
Pin Configurations
PART
NO. OF
AMPLIFIERS
1
1
2
4
GAIN-
BANDWIDTH
40kHz
9kHz
9kHz
9kHz
MINIMUM
STABLE GAIN
5V/V
1V/V
1V/V
1V/V
MAX4464
MAX4470
MAX4471
MAX4472
MAX4474
2
40kHz
5V/V
19-2021; Rev 2; 2/03
Ordering Information
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
PART
TEMP.
RANGE
PIN-
PACKAGE
TOP
MARK
MAX4464
EXK-T
MAX4464EUK-T
MAX4470
EXK-T
MAX4470EUK-T
MAX4471
EKA-T
MAX4471ESA
MAX4472
EUD
MAX4472ESD
MAX4474
EKA-T
MAX4474EUA
MAX4474ESA
-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
-40
°
C to +85
°
C
5 SC70-5
5 SOT23-5
5 SC70-5
5 SOT23-5
8 SOT23-8
8 SO
14 TSSOP
14 SO
8 SOT23-8
8 μMAX
8 SO
ABT
ADPI
ABS
ADPH
AAEK
—
—
—
AAEL
—
—
Pin Configurations continued at end of data sheet.
Selector Guide
Battery-Powered
Systems
Portable Instrumentation
Pagers and Cellphones
Micropower
Thermostats