INA270A-Q1 Datasheet, PDF (1/16 Pages) Texas Instruments – VOLTAGE-OUTPUT UNIDIRECTIONAL-MEASUREMENT CURRENT-SHUNT MONITORS

INA270-Q1, INA271-Q1
www.ti.com
SBOS401B – JULY 2007 – REVISED FEBRUARY 2010
VOLTAGE-OUTPUT UNIDIRECTIONAL-MEASUREMENT CURRENT-SHUNT MONITORS
Check for Samples: INA270-Q1, INA271-Q1
FEATURES
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• 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– 1
8 IN+
GND 2
7 NC
PRE OUT 3
6 V+
BUF IN 4
5 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.
T_A
–40°C to 125°C
GAIN
14
20
SOIC – D
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
Reel of 2500
INA270AQDRQ1
INA271AQDRQ1
TOP-SIDE MARKING
INA270
INA271
(1) 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 www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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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