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SBOS401B – JULY 2007 – REVISED FEBRUARY 2010
VOLTAGE-OUTPUT UNIDIRECTIONAL-MEASUREMENT CURRENT-SHUNT MONITORS
Check for Samples:
1
FEATURES
Qualified for Automotive Applications
Wide Common-Mode Range: –16 V to 80 V
CMRR: 120 dB
Accuracy:
– ±2.5-mV Offset (Max)
– ±1% Gain Error (Max)
– 20-mV/°C Offset Drift (Max)
– 55-ppm/°C Gain Drift (Max)
Bandwidth: Up to 130 kHz
Two Transfer Functions Available:
– 14 V/V (INA270)
– 20 V/V (INA271)
Quiescent Current: 900
mA
(Max)
Power Supply: 2.7 V to 18 V
Provision for Filtering
APPLICATIONS
•
•
•
•
•
•
•
Power Management
Automotive
Telecom Equipment
Notebook Computers
Battery Chargers
Cell Phones
Welding Equipment
D PACKAGE
(TOP VIEW)
•
•
•
•
•
•
IN–
GND
PRE OUT
BUF IN
1
2
3
4
8
7
6
5
IN+
NC
V+
OUT
•
•
•
NC – No internal connection
DESCRIPTION/ORDERING INFORMATION
The INA270 and INA271 family of current-shunt monitors with voltage output can sense voltage drops across
current shunts at common-mode voltages from –16 V to 80 V, independent of the supply voltage. The INA270
and INA271 pinouts readily enable filtering.
The INA270 and INA271 are available with two output voltage scales: 14 V/V and 20 V/V. The 130-kHz
bandwidth simplifies use in current-control loops.
The INA270 and INA271 operate from a single 2.7-V to 18-V supply, drawing a maximum of 900
mA
of supply
current. They are specified over the extended operating temperature range of –40°C to 125°C and are offered in
an SO-8 package.
ORDERING INFORMATION
(1)
T
A
–40°C to 125°C
(1)
(2)
GAIN
14
20
SOIC – D
PACKAGE
(2)
Reel of 2500
ORDERABLE PART NUMBER
INA270AQDRQ1
INA271AQDRQ1
TOP-SIDE MARKING
INA270
INA271
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at
Package drawings, thermal data, and symbolization are available at
<br/>
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1
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2010, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
