INA270A-Q1_16 Datasheet, PDF (1/23 Pages) Texas Instruments – Voltage Output Current Sense Amplifier With Simplified Filter Inputs

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INA270A-Q1, INA271A-Q1
SBOS401C – JULY 2007 – REVISED APRIL 2016
INA27xA-Q1 Automotive Grade, –16V to +80V, Low- or High-side, High-Speed, Voltage
Output Current Sense Amplifier With Simplified Filter Inputs
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C6
• Pinout Optimized for External Filtering
• Wide Common-Mode Range: –16 V to +80 V
• Accuracy:
– CMRR: 120 dB
– ±2.5-mV Offset (Maximum)
– ±1% Gain Error (Maximum)
– 20-μV/°C Offset Drift (Maximum)
– 55-ppm/°C Gain Drift (Maximum)
• Bandwidth: Up to 130 kHz
• Two Gain Options Available:
– 14 V/V (INA270A-Q1)
– 20 V/V (INA271A-Q1)
• Quiescent Current: 900 μA (Maximum)
• Power Supply: 2.7 V to 18 V
• Packages: SOIC-8
2 Applications
• Electric Power Steering (EPS) Systems
• Body Control Modules
• Brake Systems
• Electronic Stability Control (ESC) Systems
3 Description
The INA270A-Q1 and INA271A-Q1 (INA27xA-Q1)
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 INA27xA-Q1
pinouts readily enable filtering.
The INA27xA-Q1 devices 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 INA27xA-Q1 operates from a single 2.7-V to 18-
V supply, drawing a maximum of 900 μA of supply
current. They 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)
INA270A-Q1
INA271A-Q1
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
−16 V to +80 V
Supply
Simplified Schematic
R_S
Load
Single-Pole Filter
Capacitor
+2.7 V to +18 V
IN+
IN–
PRE OUT BUF IN
VS
5 kW
5 kW
0.01 µF
0.1 µF
A1
OUT
A2
96 kW
R_L
GND
Copyright © 2016, Texas Instruments Incorporated
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.