INA3
26
INA3
27
INA326
INA327
SBOS222C 鈥?NOVEMBER 2001 鈥?REVISED AUGUST 2003
Precision, Rail-to-Rail I/O
INSTRUMENTATION AMPLIFIER
FEATURES
q
PRECISION
LOW OFFSET: 100
碌
V (max)
LOW OFFSET DRIFT: 0.4
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 Below Negative Rail to 100mV Above
Positive Rail
WIDE OUTPUT SWING: Within 10mV of Rails
SUPPLY RANGE: Single +2.7V to +5.5V
q
SMALL SIZE
microPACKAGE:
MSOP-8, MSOP-10
q
LOW COST
DESCRIPTION
The INA326 and INA327 (with shutdown) are high-perfor-
mance, low-cost, precision instrumentation amplifiers with
rail-to-rail input and output. They are true single-supply
instrumentation amplifiers with very low DC errors and input
common-mode ranges that extends beyond the positive and
negative rails. These features make them suitable for appli-
cations 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 (without shutdown) comes in the MSOP-8 pack-
age. The INA327 (with shutdown) is offered in an MSOP-10.
Both are specified over the industrial temperature range,
鈥?0擄C to +85擄C, with operation from 鈥?0擄C to +125擄C.
INA326 AND INA327 RELATED PRODUCTS
PRODUCT
INA337
INA114
INA118
INA122
INA128
INA321
FEATURES
Precision, 0.4
碌
V/
擄
C Drift, Specified 鈥?0
擄
C to +125
擄
C
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
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
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 2001-2003, Texas Instruments Incorporated
www.ti.com
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