19-2272; Rev 0; 1/02
Single/Dual/Quad, Micropower, Single-Supply,
Rail-to-Rail Op Amps
General Description
Features
o Low-Voltage, Single-Supply Operation (2.7V to 6V)
o Beyond-the-Rails™ Inputs
The single MAX4091, dual MAX4092, and quad
MAX4094 operational amplifiers combine excellent DC
®
accuracy with Rail-to-Rail operation at the input and
output. Since the common-mode voltage extends from
o No Phase Reversal for Overdriven Inputs
o 30µV Offset Voltage
V
CC
to V , the devices can operate from either a sin-
EE
gle supply (2.7V to 6V) or split supplies ( 1.ꢀ3V to
ꢀV). Each op amp requires less than 1ꢀ0ꢁA of supply
current. Even with this low current, the op amps are
capable of driving a 1kΩ load, and the input-referred
voltage noise is only 12nV/√Hz. In addition, these op
amps can drive loads in excess of 2000pF.
o Rail-to-Rail Output Swing with 1kΩ Load
o Unity-Gain Stable with 2000pF Load
o 165µA (max) Quiescent Current Per Op Amp
o 500kHz Gain-Bandwidth Product
The precision performance of the MAX4091/MAX4092/
MAX4094 combined with their wide input and output
dynamic range, low-voltage, single-supply operation,
and very low supply current, make them an ideal
choice for battery-operated equipment, industrial, and
data acquisition and control applications. In addition,
the MAX4091 is available in space-saving 3-pin SOT2ꢀ,
8-pin ꢁMAX, and 8-pin SO packages. The MAX4092 is
available in 8-pin ꢁMAX and SO packages, and the
MAX4094 is available in 14-pin TSSOP and 14-pin SO
packages.
o High Voltage Gain (115dB)
o High Common-Mode Rejection Ratio (90dB) and
Power-Supply Rejection Ratio (100dB)
o Temperature Range (-40°C to +125°C)
Ordering Information
PART
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
5 SOT23-5
8 SO
________________________Applications
MAX4091AUK-T
MAX4091ASA
MAX4091AUA
MAX4092ASA
MAX4092AUA
MAX4094AUD
MAX4094ASD
Portable Equipment
8 µMAX
8 SO
Battery-Powered Instruments
Data Acquisition and Control
Low-Voltage Signal Conditioning
8 µMAX
14 TSSOP
14 SO
Pin Configurations/Functional Diagrams
TOP VIEW
OUT1
IN1-
OUT4
IN4-
14
13
12
11
10
9
1
2
3
4
5
6
7
OUT
OUT1
IN1-
N.C.
IN-
V
V
CC
N.C.
1
2
3
4
8
7
6
5
1
2
3
5
1
2
3
4
8
7
6
5
CC
MAX4091
MAX4092
MAX4091
IN1+
IN4+
OUT2
IN2-
V
CC
V
CC
V
V
EE
EE
MAX4094
OUT
N.C.
IN1+
IN+
IN2+
IN2-
IN3+
IN3-
4
4
IN-
IN2+
IN+
V
V
EE
EE
OUT2
OUT3
8
SOT23
µMAX/SO
µMAX/SO
TSSOP/SO
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products
1
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.