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參數(shù)資料
| 型號： | INA322 |
| 元件分類： | 測量放大器 |
| 英文描述： | Precision Instrumentation Amplifier |
| 中文描述： | 精密儀表放大器 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 303K |
| 代理商： | INA322 |
INA322
INA2322
Copyright 2000, Texas Instruments Incorporated
SBOS174A
Printed in U.S.A. December, 2000
FEATURES
G
LOW COST
G
LOW QUIESCENT CURRENT:
40
μ
A/channel
Shut Down: < 1
μ
A
G
HIGH GAIN ACCURACY:
G = 5, 0.07%, 2ppm/
°
C
G
GAIN SET WITH EXTERNAL RESISTORS
G
LOW BIAS CURRENT: 10pA
G
BANDWIDTH: 500kHz, G = 5V/V
G
RAIL-TO-RAIL OUTPUT SWING: (V+) – 0.02V
G
WIDE TEMPERATURE RANGE:
–55
°
C to +125
°
C
G
SINGLE VERSION IN MSOP-8 PACKAGE AND
DUAL VERSION IN TSSOP-14 PACKAGE
microPower, Single-Supply, CMOS
INSTRUMENTATION AMPLIFIER
DESCRIPTION
The INA322 family is a series of low cost, rail-to-rail
output, micropower CMOS instrumentation amplifiers
that offer wide-range, single-supply, as well as bipolar-
supply operation. The INA322 family provides low-
cost, low-noise amplification of differential signals with
micropower current consumption of 40
μ
A. When shut-
down the INA322 has a quiescent current of less than
1
μ
A. Returning to normal operations within nanosec-
onds, the shutdown feature makes the INA322 optimal
for low-power battery or multiplexing applications.
APPLICATIONS
G
INDUSTRIAL SENSOR AMPLIFIERS:
Bridge, RTD, Thermistor, Position
G
PHYSIOLOGICAL AMPLIFIERS:
ECG, EEG, EMG
G
A/D CONVERTER SIGNAL CONDITIONING
G
DIFFERENTIAL LINE RECEIVERS WITH GAIN
G
FIELD UTILITY METERS
G
PCMCIA CARDS
G
COMMUNICATION SYSTEMS
G
TEST EQUIPMENT
G
AUTOMOTIVE INSTRUMENTATION
INA322
www.ti.com
Configured internally for 5V/V gain, the INA322 offers
exceptional flexibility with user-programmable external
gain resistors. The INA322 reduces common-mode er-
ror over frequency and with CMRR remaining high up
to 3kHz, line noise and line harmonics are rejected.
The low-power design does not compromise on band-
width or slew rate, making the INA322 ideal for driving
sampling Analog-to-Digital (A/D) converters as well as
general-purpose applications. With high precision, low
cost, and small packaging, the INA322 outperforms dis-
crete designs, while offering reliability and performance.
A2
A1
A3
160k
REF
V
IN–
V
IN+
40k
40k
Shutdown
V+
V
OUT
V
OUT
= (V
IN+
– V
IN–
) Gain
Gain = 5 + 5(R2/R1)
V–
R
2
R
1
RG
160k
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