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INA128 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce INA128
Description  Precision, Low Power INSTRUMENTATION AMPLIFIERS
Download  20 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

INA128 Fiches technique(HTML) 1 Page - Texas Instruments

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FEATURES
D LOW OFFSET VOLTAGE: 50µV max
D LOW DRIFT: 0.5µV/5C max
D LOW INPUT BIAS CURRENT: 5nA max
D HIGH CMR: 120dB min
D INPUTS PROTECTED TO +40V
D WIDE SUPPLY RANGE: +2.25V to +18V
D LOW QUIESCENT CURRENT: 700µA
D 8-PIN PLASTIC DIP, SO-8
APPLICATIONS
D BRIDGE AMPLIFIER
D THERMOCOUPLE AMPLIFIER
D RTD SENSOR AMPLIFIER
D MEDICAL INSTRUMENTATION
D DATA ACQUISITION
DESCRIPTION
The INA128 and INA129 are low power, general
purpose instrumentation amplifiers offering excellent
accuracy. The versatile 3-op amp design and small size
make them ideal for a wide range of applications.
Current-feedback
input
circuitry
provides
wide
bandwidth even at high gain (200kHz at G = 100).
A single external resistor sets any gain from 1 to 10,000.
The INA128 provides an industry-standard gain
equation; the INA129 gain equation is compatible with
the AD620.
The INA128/INA129 is laser trimmed for very low offset
voltage
(50
µV),
drift
(0.5
µV/°C)
and
high
common-mode rejection (120dB at G
≥ 100). It
operates with power supplies as low as
±2.25V, and
quiescent current is only 700
µA—ideal for battery-
operated systems. Internal input protection can
withstand up to
±40V without damage.
The INA128/INA129 is available in 8-pin plastic DIP and
SO-8 surface-mount packages, specified for the –40
°C
to +85
°C temperature range. The INA128 is also
available in a dual configuration, the INA2128.
A
1
A
2
A
3
40k
40k
40k
40k
V
IN
2
1
8
3
6
5
V
IN
R
G
V+
V
Ref
V
O
G= 1 +
49.4k
R
G
+
4
7
NOTE: (1) INA129: 24.7k
G= 1 +
50k
R
G
INA128, INA129
Over-Voltage
Protection
Over-Voltage
Protection
25k
Ω(1)
25k
Ω(1)
INA128:
INA129:
All trademarks are the property of their respective owners.
INA128
INA129
Precision, Low Power
INSTRUMENTATION AMPLIFIERS
SBOS051B − OCTOBER 1995 − REVISED FEBRUARY 2005
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
www.ti.com
Copyright
 1995−2005, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.


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