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INA146 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 INA146
部品説明 High-Voltage/ Programmable Gain DIFFERENCE AMPLIFIER
メーカ Burr-Brown Corporation
ロゴ Burr-Brown Corporation ロゴ 



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INA146 Datasheet, INA146 PDF,ピン配置, 機能
®
INA146
INA146
For most current data sheet and other product
information, visit www.burr-brown.com
High-Voltage, Programmable Gain
DIFFERENCE AMPLIFIER
FEATURES
q HIGH COMMON-MODE VOLTAGE:
+40V at VS = +5V
±100V at VS = ±15V
q DIFFERENTIAL GAIN = 0.1V/V TO 100V/V:
Set with External Resistors
q LOW QUIESCENT CURRENT: 570µA
q WIDE SUPPLY RANGE:
Single Supply: 4.5V to 36V
Dual Supplies: ±2.25V to ±18V
q LOW GAIN ERROR: 0.025%
q HIGH CMR: 80dB
q SO-8 PACKAGE
APPLICATIONS
q CURRENT SHUNT MEASUREMENTS
q SENSOR AMPLIFIER
q SYNCHRONOUS DEMODULATOR
q CURRENT AND DIFFERENTIAL LINE
RECEIVER
q VOLTAGE-CONTROLLED CURRENT
SOURCE
q BATTERY POWERED SYSTEMS
q LOW COST AUTOMOTIVE
INSTRUMENTATION
V+
7
R1
100k
VIN– 2
R2
10k
G = 0.1
A1
R3
100k
VIN+ 3
R4
10k
4
V–
DESCRIPTION
The INA146 is a precision difference amplifier that
can be used to accurately attenuate high differential
voltages and reject high common-mode voltages for
compatibility with common signal processing voltage
levels. High-voltage capability also affords inherent
input protection. The input common-mode range ex-
tends beyond both supply rails, making the INA146
well-suited for both single and dual supply applica-
tions.
On-chip precision resistors are laser-trimmed to achieve
accurate gain and high common-mode rejection. Ex-
cellent TCR tracking of these resistors assures contin-
ued high precision over temperature.
A 10:1 difference amplifier provides 0.1V/V gain
when the output amplifier is used as a unity-gain
buffer. In this configuration, input voltages up to
±100V can be measured. Gains greater than 0.1V/V
can be set with an external resistor pair without affect-
ing the common-mode input range.
The INA146 is available in the SO-8 surface-mount
package specified for the extended industrial tempera-
ture range, –40°C to +85°C.
RG1
RG2
5
R5
10k
(1%)
A2 6 VO
VO = (VI+N – VI–N) 0.1 (1 + RG2/RG1)
INA146
18
Ref V01
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1999 Burr-Brown Corporation
PDS-11491A
INA146Printed in U.S.A. September, 1999
®

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