INA271
INA271 is Unidirectional Measurement Current-Shunt Monitor manufactured by Texas Instruments.
- Part of the INA270 comparator family.
- Part of the INA270 comparator family.
Features
- 1 Wide mon-Mode Range:
- 16 V to +80 V
- CMRR: 120 d B
- Accuracy:
±0.5-m V Offset (typ) ±0.2% Gain Error (typ) 2.5 μV/°C Offset Drift (typ) 50 ppm/°C Gain Drift (max)
- Bandwidth: Up to 130 k Hz
- 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
- Tele Equipment
- Notebook puters
- Battery Chargers
- Cell Phones
- Welding Equipment
3 Description
The INA270 and INA271 family of voltage-output, current-sense amplifiers can sense drops across shunt resistors at mon-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-k Hz 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.
-16V to +80V Supply
Simplified Schematic
RS Load
Single-Pole Filter Capacitor
IN+ 5k W
IN5k W
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