MAX4321 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Low-Cost, Low-Voltage, Rail-to-Rail, Input/Output, SOT23 5MHz Op Amp

19-1649; Rev 0; 4/00
Low-Cost, Low-Voltage, Rail-to-Rail,
Input/Output, SOT23 5MHz Op Amp
General Description
The MAX4321 operational amplifier (op amp) combines
a 5MHz gain-bandwidth product and excellent DC
accuracy with Rail-to-Rail^® operation at both the inputs
and the output. This device requires only 650µA and
operates from either a single +2.4V to +6.5V supply or
dual ±1.2V to ±3.25V supplies, although the MAX4321
typically operates down to +1.8V (±0.9V). The
MAX4321 remains unity-gain stable with capacitive
loads up to 500pF and is capable of driving 250Ω loads
to within 200mV of either rail.
With rail-to-rail input common-mode range and output
swing, the MAX4321 is ideal for low-voltage, single-sup-
ply applications. In addition, low ±1.2mV input offset volt-
age and high 2V/µs slew rate make this device ideal for
signal-conditioning stages for precision, low-voltage data-
acquisition systems. The MAX4321 comes in a space-
saving 5-pin SOT23 package and is guaranteed over the
extended (-40°C to +85°C) temperature range.
The MAX4321 is a low-voltage, pin-for-pin compatible
upgrade for the LMC7101 that offers five-times higher
bandwidth, two-times faster slew rate, and about half the
input voltage noise density.
________________________Applications
Battery-Powered Instruments
Portable Equipment
Data-Acquisition Systems
Sensor and Signal Conditioning
Low-Power, Low-Voltage Applications
General-Purpose Low-Voltage Applications
Typical Operating Circuit
+5V
SERIAL
INTERFACE
MAX187
3 _SHDN
V_DD ¹
6 _DOUT
AIN ²
8 _SCLK
VREF ⁴
7 _CS
GND ⁵
MAX4321
Features
o Low-Voltage, Pin-for-Pin Upgrade for LMC7101
o Guaranteed +2.4V to +6.5V Single-Supply
Operation
o Typically Operates Down to +1.8V
o 5MHz Gain-Bandwidth Product
o 650µA Quiescent Current
o Rail-to-Rail Common-Mode Input Voltage Range
o Rail-to-Rail Output Voltage Range
o Drives 250Ω Loads
o Unity-Gain Stable for Capacitive Loads up to
500pF
o No Phase Reversal for Overdriven Inputs
o Low-Cost Solution in SOT23-5 Package
Ordering Information
PART
MAX4321EUK-T
TEMP.
RANGE
-40°C to +85°C
PIN-
PACKAGE
5 SOT23-5
TOP
MARK
ADOA
Pin Configuration/
Functional Diagram
TOP VIEW
OUT 1
5 V_EE
V_CC 2
IN+ 3
MAX4321
SOT23
4 IN-
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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