19-1087; Rev 1; 8/97
Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply Rail-to-Rail I/O Op Amps
General Description
The MAX4122–MAX4129 family of operational amplifiers
combines wide bandwidth and excellent DC accuracy with
Rail-to-Rail
®
operation at the inputs and outputs. These
devices require only 650µA per amplifier, and operate from
either a single supply (+2.7V to +6.5V) or dual supplies
(±1.35V to ±3.25V) with a common-mode voltage range
that extends 250mV beyond V
EE
and V
CC
. They are capa-
ble of driving 250Ω loads. The MAX4122/MAX4123/
MAX4126/MAX4127/MAX4129 have a 5MHz gain band-
width product, while the decompensated MAX4124/
MAX4125/MAX4128 (stable at closed-looped gains of
10 or greater) have a 25MHz gain bandwidth product. In
addition, the MAX4123/MAX4125/MAX4127 feature a
shutdown mode in which the outputs are placed in a
high-impedance state and the supply current is reduced
to only 25µA per amplifier.
With their rail-to-rail input common-mode range and
output swing, these amplifiers are ideal for low-voltage
single-supply operation. Although the minimum operat-
ing voltage is specified at 2.7V, the devices typically
operate down to 1.8V. In addition, low offset voltage
and high speed make them the ideal signal-condition-
ing stages for precision, low-voltage, data-acquisition
systems.
The MAX4122 and MAX4124 come in the
space-saving 5-pin SOT23-5 package.
o
5-Pin SOT23 Package (MAX4122/4)
o
+2.7V to +6.5V Single-Supply Operation
o
Rail-to-Rail Input Common-Mode Voltage Range
o
Rail-to-Rail Output Voltage Swing
o
5MHz Gain-Bandwidth Product (MAX4122/3/6/7/9)
25MHz Gain-Bandwidth Product (MAX4124/5/8)
o
650µA Quiescent Current per Amplifier
o
25µA Shutdown Function (MAX4123/5/7)
o
200µV Offset Voltage
o
No Phase Reversal for Overdriven Inputs
o
Drive 250Ω Loads
o
Stable with 500pF Capacitive Loads
o
Unity-Gain Stable (MAX4122/3/6/7/9)
Stable at Gains
≥
10V/V (MAX4124/5/8)
Features
MAX4122–MAX4129
Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
5 SOT23-5
MARKING
INFO.
AAAZ
________________________Applications
Battery-Powered Instruments
Portable Equipment
Data-Acquisition Systems
Signal Conditioning
Low-Power, Low-Voltage Applications
MAX4122EUK
-40°C to +85°C
MAX4123C/D
—
0°C to +70°C Dice*
—
MAX4123ESA -40°C to +85°C 8 SO
MAX4123EUA -40°C to +85°C 8 µMAX
—
Ordering Information continued at end of data sheet.
*Dice
are specified at T
A
= +25°C, DC parameters only.
Pin Configurations appear at end of data sheet.
Selection Table
PART
MAX4122
MAX4123
MAX4124
MAX4125
MAX4126
MAX4127
MAX4128
MAX4129
BW
(MHz)
5
5
25
25
5
5
25
5
AMPS
PER
PKG.
1
1
1
1
2
2
2
4
SHUT-
DOWN
MODE
—
Yes
—
Yes
—
Yes
—
—
PIN-
PACKAGE
5 SOT23-5
8 SO/µMAX
5 SOT23-5
8 SO/µMAX
8 SO/µMAX
14 SO
8 SO/µMAX
14 SO
__________Typical Operating Circuit
+5V
MAX187
3
6
SERIAL
INTERFACE
8
7
SHDN
DOUT
SCLK
CS
V
DD
AIN
VREF
GND
1
2
MAX4123
4
5
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
