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PDF INA271 Data sheet ( Hoja de datos )
| Número de pieza | INA271 | |
| Descripción | Unidirectional Measurement Current-Shunt Monitor | |
| Fabricantes | Burr-Brown | |
| Logotipo |  |
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INA270
INA271
SBOS381 − FEBRUARY 2007
Voltage Output, Unidirectional Measurement
Current-Shunt Monitor
FEATURES
DESCRIPTION
D WIDE COMMON-MODE RANGE: −16V to +80V
D CMRR: 120dB
D ACCURACY:
The INA270 and INA271 family of current-shunt monitors
with voltage output can sense voltage drops across
current shunts at common-mode voltages from −16V to
+80V, independent of the supply voltage. The INA270 and
− ±2.5mV offset (max)
INA271 pinouts readily enable filtering.
− ±1% gain error (max)
− 20µV/°C offset drift (max)
− 55ppm/°C gain drift (max)
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.
D BANDWIDTH: Up to 130kHz
The INA270 and INA271 operate from a single +2.7V to
D TWO TRANSFER FUNCTIONS AVAILABLE:
− 14V/V (INA270)
− 20V/V (INA271)
D QUIESCENT CURRENT: 900µA (max)
+18V supply, drawing a maximum of 900µA 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.
D POWER SUPPLY: +2.7V to +18V
D PROVISION FOR FILTERING
APPLICATIONS
D POWER MANAGEMENT
−16V to +80V
Supply
www.DataSheet4U.com
RS
Load
Single−Pole Filter
Capacitor
D AUTOMOTIVE
+2.7V to +18V
D TELECOM EQUIPMENT
D NOTEBOOK COMPUTERS
D BATTERY CHARGERS
IN+
5kΩ
IN−
5kΩ
PRE OUT
BUF IN
V+
D CELL PHONES
D WELDING EQUIPMENT
A1
OUT
DEVICE COMPARISON
DEVICE
INA270
INA271
GAIN
14V/V
20V/V
96kΩ
A2
INA270
RL
GND
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.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright 2007, Texas Instruments Incorporated
www.ti.com
1 page  
www.ti.com
TYPICAL CHARACTERISTICS (continued)
At TA = +25°C, VS = +12V, VCM = 12V, and VSENSE = 100mV, unless otherwise noted.
INA270
INA271
SBOS381 − FEBRUARY 2007
POSITIVE OUTPUT VOLTAGE SWING
vs OUTPUT CURRENT
12
11
10
VS = 12V
Sourcing Current
9
8
7
+25_C
+125_ C
−40_C
6
5
VS = 3V
Sourcing Current
4 +25_C −40_C Output stage is designed
3 to source current. Current
2 sinking capability is
1 +125_ C
0
approximately 400µA.
0 5 10 15 20 25 30
Output Current (mA)
1000
900
800
700
600
500
400
300
200
100
0
0
QUIESCENT CURRENT vs OUTPUT VOLTAGE
1 2 3 4 5 6 7 8 9 10
Output Voltage (V)
QUIESCENT CURRENT
vs COMMON−MODE VOLTAGE
875
VSENSE = 100mV:
775
VS = 12V
VS = 2.7V
675
575
www.DataSheet4U.com
475
375
VSENSE = 0mV:
275
VS = 12V
VS = 2.7V
175
−16 −12 −8 −4 0 4 8 12 16 20 ... 76 80
VCM (V)
OUTPUT SHORT−CIRCUIT CURRENT
vs SUPPLY VOLTAGE
34 −40_C
30
+25_ C
26 +125_ C
22
18
14
10
6
2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 17
Supply Voltage (V)
18
PREOUT OUTPUT RESISTANCE
PRODUCTION DISTRIBUTION
BUFFER GAIN vs FREQUENCY
200
150
Phase
100
50
Gain
0
RPREOUT (kΩ)
−50
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
5
5 Page 
www.ti.com
PACKAGE OPTION ADDENDUM
20-Mar-2007
PACKAGING INFORMATION
Orderable Device
INA270AID
INA270AIDR
INA271AID
INA271AIDR
Status (1)
ACTIVE
ACTIVE
ACTIVE
ACTIVE
Package
Type
SOIC
Package
Drawing
D
SOIC
D
SOIC
D
SOIC
D
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
8 75 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
8 2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
8 75 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
8 2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Fwrwewe.Da(tRaSoheHet4SU.ccoommpatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet INA271.PDF ] | |
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