MAX4194_03 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – Micropower, Single-Supply, Rail-to-Rail, Precision Instrumentation Amplifiers

19-1468; Rev 1; 6/03
Micropower, Single-Supply, Rail-to-Rail,
Precision Instrumentation Amplifiers
General Description
The MAX4194 is a variable-gain precision instrumenta-
tion amplifier that combines Rail-to-Rail^® single-supply
operation, outstanding precision specifications, and a
high gain bandwidth. This amplifier is also offered in
three fixed-gain versions: the MAX4195 (G = +1V/V), the
MAX4196 (G = +10V/V), and the MAX4197 (G =
+100V/V). The fixed-gain instrumentation amplifiers fea-
ture a shutdown function that reduces the quiescent
current to 8µA. A traditional three operational amplifier
configuration is used to achieve maximum DC precision.
The MAX4194–MAX4197 have rail-to-rail outputs and
inputs that can swing to 200mV below the negative rail
and to within 1.1V of the positive rail. All parts draw only
93µA and operate from a single +2.7V to +7.5V supply
or from dual ±1.35V to ±3.75V supplies. These amplifiers
are offered in 8-pin SO packages and are specified for
the extended temperature range (-40°C to +85°C).
See the MAX4198/MAX4199 data sheet for single-supply,
precision differential amplifiers.
Applications
Medical Equipment
Thermocouple Amplifier
4–20mA Loop Transmitters
Data-Acquisition Systems
Battery-Powered/Portable Equipment
Transducer Interface
Bridge Amplifier
Features
o +2.7V Single-Supply Operation
o Low Power Consumption
93µA Supply Current
8µA Shutdown Current
(MAX4195/MAX4196/MAX4197)
o High Common-Mode Rejection: 115dB (G = +10V/V)
o Input Common-Mode Range Extends 200mV
Below GND
o Low 50µV Input Offset Voltage (G ≥ +100V/V)
o Low ±0.01% Gain Error (G = +1V/V)
o 250kHz -3dB Bandwidth (G = +1V/V, MAX4194)
o Rail-to-Rail Outputs
Ordering Information
PART
MAX4194ESA
MAX4195ESA
MAX4196ESA
MAX4197ESA
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 SO
8 SO
8 SO
8 SO
PART
MAX4194
MAX4195
MAX4196
MAX4197
Selector Guide
SHUTDOWN
No
Yes
Yes
Yes
GAIN (V/V)
Variable
+1
+10
+100
CMRR (dB)
95 (G = +1V/V)
95
115
115
Pin Configurations
TOP VIEW
RG- 1
IN- 2
IN+ 3
V_EE 4
MAX4194
8 RG+
7 V_CC
6 OUT
5 REF
SO
REF 1
IN- 2
IN+ 3
V_EE 4
MAX4195
MAX4196
MAX4197
8 SHDN
7 V_CC
6 OUT
5 FB
SO
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________ 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.