INA270_15 Datasheet, PDF (1/26 Pages) Texas Instruments – INA27x Voltage Output, Unidirectional Measurement Current-Shunt Monitor

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
INA270, INA271
SBOS381D – FEBRUARY 2007 – REVISED NOVEMBER 2014
INA27x Voltage Output, Unidirectional Measurement Current-Shunt Monitor
1 Features
•1 Wide Common-Mode Range: –16 V to +80 V
• CMRR: 120 dB
• Accuracy:
±0.5-mV Offset (typ)
±0.2% Gain Error (typ)
2.5 μV/°C Offset Drift (typ)
50 ppm/°C Gain Drift (max)
• Bandwidth: Up to 130 kHz
• Two Gain Options Available:
14 V/V (INA270)
20 V/V (INA271)
• Quiescent Current: 700 μA (typ)
• Power Supply: +2.7 V to +18 V
• Provision for Filtering
2 Applications
• Power Management
• Automotive
• Telecom Equipment
• Notebook Computers
• Battery Chargers
• Cell Phones
• Welding Equipment
R_S
-16V to +80V
Supply
3 Description
The INA270 and INA271 family of voltage-output,
current-sense amplifiers can sense drops across
shunt resistors 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 gain
options: 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 700 μA (typical) of supply
current. The devices are specified over the extended
operating temperature range of –40°C to +125°C and
are offered in an SOIC-8 package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
INA27x
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Load
Single-Pole Filter
Capacitor
+2.7V to +18V
IN+
IN-
PRE OUT BUF IN
V+
5kW
5kW
A1
OUT
96kW
A2
R_L
INA270
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.