INA3
26
INA3
27
INA326
INA327
SBOS222 鈥?DECEMBER 2001
Precision, Rail-to-Rail I/O
INSTRUMENTATION AMPLIFIER
FEATURES
q
PRECISION
LOW OFFSET: 125
碌
V (max)
LOW OFFSET DRIFT: 1
碌
V/
擄
C (max)
EXCELLENT LONG-TERM STABILITY
VERY-LOW 1/f NOISE
q
TRUE RAIL-TO-RAIL I/O
INPUT COMMON-MODE RANGE: 20mV
Beyond Rails
WIDE OUTPUT SWING: Within 10mV of Rails
SUPPLY RANGE: Single +2.7V to +5.5V
q
SMALL SIZE
microPACKAGE:
MSOP-8
q
LOW COST
INA326 AND INA327 RELATED PRODUCTS
DESCRIPTION
The INA326 is a high-performance, low-cost, precision in-
strumentation amplifier with rail-to-rail input and output. It is
a true single-supply instrumentation amplifier with very-low
DC errors and input common-mode range that extends
beyond the positive and negative rails. These features make
them suitable for applications ranging from general-purpose
to high-accuracy.
Excellent long-term stability and very low 1/f noise assure low
offset voltage and drift throughout the life of the product.
The INA326 is specified over the extended industrial tem-
perature range, 鈥?0擄C to +85擄C, with operation from
鈥?0擄C to +125擄C.
The INA327, with shutdown and synchronization, will be
available Q1 2002.
APPLICATIONS
q
LOW-LEVEL TRANSDUCER AMPLIFIER FOR
BRIDGES, LOAD CELLS, THERMOCOUPLES
q
WIDE DYNAMIC RANGE SENSOR
MEASUREMENTS
q
HIGH-RESOLUTION TEST SYSTEMS
q
WEIGH SCALES
q
MULTI-CHANNEL DATA ACQUISITION
SYSTEMS
q
MEDICAL INSTRUMENTATION
q
GENERAL-PURPOSE
PRODUCT
INA114
INA118
INA122
INA128
INA321
FEATURES
50碌V V
OS
, 0.5nA I
B
, 115dB CMR, 3mA I
Q
, 0.25碌V/擄C drift
50碌V V
OS
, 1nA I
B
, 120dB CMR, 385碌A(chǔ) I
Q
, 0.5碌V/擄C drift
250碌V V
OS
, 鈥?0nA I
B
, 85碌A(chǔ) I
Q
, Rail-to-Rail Output, 3碌V/擄C drift
50碌V V
OS
, 2nA I
B
, 125dB CMR, 750碌A(chǔ) I
Q
, 0.5碌V/擄C drift
500碌V V
OS
, 0.5pA I
B
, 94dB CMRR, 60碌A(chǔ) I
Q
, Rail-to-Rail Output
V+
V
IN鈥?/div>
2
1
7
V鈥?/div>
4
INA326
6
5
V
O
G = 2(R
2
/R
1
)
R
1
8
3
V
IN+
R
2
C
2
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.
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.
Copyright 漏 2001, Texas Instruments Incorporated
www.ti.com
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