INA270_07 BURR-BROWN [Burr-Brown Corporation], INA270_07 Datasheet

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INA270_07

Manufacturer Part Number
INA270_07
Description
Voltage Output, Unidirectional Measurement Current-Shunt Monitor
Manufacturer
BURR-BROWN [Burr-Brown Corporation]
Datasheet
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.
FEATURES
APPLICATIONS
All trademarks are the property of their respective owners.
WIDE COMMON-MODE RANGE: –16V to +80V
CMRR: 120dB
ACCURACY:
20 V/ C offset drift (max)
55ppm/ C gain drift (max)
BANDWIDTH: Up to 130kHz
TWO TRANSFER FUNCTIONS AVAILABLE:
14V/V (INA270)
20V/V (INA271)
QUIESCENT CURRENT: 900 A (max)
POWER SUPPLY: +2.7V to +18V
PROVISION FOR FILTERING
POWER MANAGEMENT
AUTOMOTIVE
TELECOM EQUIPMENT
NOTEBOOK COMPUTERS
BATTERY CHARGERS
CELL PHONES
WELDING EQUIPMENT
2.5mV offset (max)
1% gain error (max)
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.
Voltage Output, Unidirectional Measurement
Burr Brown Products
from Texas Instruments
Current-Shunt Monitor
DESCRIPTION
The INA270 and INA271 family of current-shunt
monitors with voltage output can sense drops across
current shunts at common-mode voltages from –16V
to +80V, independent of the supply voltage. The
INA270 and INA271 pinouts readily enable filtering.
The INA270 and INA271 are available with two
output voltage scales: 14V/V and 20V/V. The 130kHz
bandwidth simplifies use in current-control loops.
The INA270 and INA271 operate from a single +2.7V
to +18V supply, drawing a maximum of 900 A 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.
-16V to +80V
Supply
IN+
INA270
DEVICE
INA270
INA271
5kW
SBOS381A – FEBRUARY 2007 – REVISED APRIL 2007
DEVICE COMPARISON
R
A2
A1
S
IN-
Copyright © 2007, Texas Instruments Incorporated
5kW
Single-Pole Filter
R
L
PRE OUT
Capacitor
Load
96kW
BUF IN
14V/V
20V/V
GND
GAIN
INA270
INA271
+2.7V to +18V
V+
OUT

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INA270_07 Summary of contents

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Burr Brown Products from Texas Instruments Voltage Output, Unidirectional Measurement Current-Shunt Monitor FEATURES WIDE COMMON-MODE RANGE: –16V to +80V CMRR: 120dB ACCURACY: 2.5mV offset (max) 1% gain error (max offset drift (max) 55ppm/ C gain drift (max) ...

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INA270 INA271 SBOS381A – FEBRUARY 2007 – REVISED APRIL 2007 This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause ...

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ELECTRICAL CHARACTERISTICS Boldface limits apply over the specified temperature range + +5V +12V PARAMETER INPUT Full-Scale Input Voltage V SENSE Common-Mode Input Range V CM Common-Mode ...

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INA270 INA271 SBOS381A – FEBRUARY 2007 – REVISED APRIL 2007 ELECTRICAL CHARACTERISTICS (continued) Boldface limits apply over the specified temperature range + +5V +12V PARAMETER (7) NOISE, ...

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+ +12V GAIN vs FREQUENCY 10k 100k Frequency (Hz) Figure 1. GAIN PLOT 20 V ...

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INA270 INA271 SBOS381A – FEBRUARY 2007 – REVISED APRIL 2007 TYPICAL CHARACTERISTICS (continued + +12V 12V, and POSITIVE OUTPUT VOLTAGE SWING vs OUTPUT CURRENT ...

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TYPICAL CHARACTERISTICS (continued + +12V 12V, and SMALL-SIGNAL STEP RESPONSE 10mV TO 20mV INPUT 10 s/div m Figure 13. SBOS381A – FEBRUARY 2007 – REVISED APRIL 2007 ...

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INA270 INA271 SBOS381A – FEBRUARY 2007 – REVISED APRIL 2007 BASIC CONNECTION Figure 15 shows the basic connection of the INA270 and INA271. The input pins, IN+ and IN–, should be connected as closely as possible to the shunt resistor ...

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TRANSIENT PROTECTION The –16V to +80V common-mode range of the INA270 and INA271 is ideal for withstanding automotive fault conditions ranging from 12V battery reversal up to +80V transients, since no additional protective components are needed up to those ...

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INA270 INA271 SBOS381A – FEBRUARY 2007 – REVISED APRIL 2007 ACCURACY VARIATIONS AS A RESULT OF V AND COMMON-MODE VOLTAGE SENSE The accuracy of the INA270 and INA271 current shunt monitors is a function of two main variables ...

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Low V Case 2: V < 20mV, 0V SENSE SENSE This region of operation is the least accurate for the INA270 family. To achieve common-mode voltage range, these devices use two op amp front ends in parallel. One op ...

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INA270 INA271 SBOS381A – FEBRUARY 2007 – REVISED APRIL 2007 -16V to +80V Supply IN+ Negative and 5kW Positive Common-Mode Voltage INA270, INA271 Figure 19. INA270–INA271 Example Shutdown Circuit Single-Pole Filter Capacitor PRE OUT BUF ...

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PACKAGING INFORMATION (1) Orderable Device Status INA270AID ACTIVE INA270AIDG4 ACTIVE INA270AIDR ACTIVE INA270AIDRG4 ACTIVE INA271AID ACTIVE INA271AIDG4 ACTIVE INA271AIDR ACTIVE INA271AIDRG4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: ...

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TAPE AND REEL INFORMATION PACKAGE MATERIALS INFORMATION Pack Materials-Page 1 7-May-2007 ...

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Device Package Pins INA270AIDR D 8 INA271AIDR D 8 TAPE AND REEL BOX INFORMATION Device Package INA270AIDR D INA271AIDR D PACKAGE MATERIALS INFORMATION Site Reel Reel A0 (mm) Diameter Width (mm) (mm) TAI 330 12 6.4 TAI 330 12 ...

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Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the ...

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