INA212-Q1_15 Datasheet, PDF (1/28 Pages) Texas Instruments – Zero-Drift Series, Current-Shunt Monitors

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INA212-Q1, INA213A-Q1, INA214-Q1
SBOS475E – MARCH 2009 – REVISED DECEMBER 2014
INA21x-Q1 Automotive-Grade Voltage Output, Low- or High-Side Measurement,
Bidirectional, Zero-Drift Series, Current-Shunt Monitors
1 Features
•1 Qualified for Automotive Applications
• Wide Common-Mode Range: –0.3 V to 26 V
• Offset Voltage: ±100 µV (Maximum)
(Enables Shunt Drops of 10-mV Full-Scale)
• Accuracy:
– ±1% Gain Error (Maximum over Temperature)
– 0.5-µV/°C Offset Drift (Maximum)
– 10-ppm/°C Gain Drift (Maximum)
• Choice of Gain
– INA212-Q1: 1000 V/V
– INA213A-Q1: 50 V/V
– INA214-Q1: 100 V/V
• Quiescent Current: 100 µA (Maximum)
• SC70 Package
2 Applications
• Body Control Module
• Valve Control
• Motor Control
• Electronic Stability Control
• Wireless Charging Transmitters
3 Description
The INA21x-Q1 devices are voltage-output, current-
shunt monitors (also called current-sense amplifiers)
that can sense drops across shunts at common-mode
voltages from –0.3 V to 26 V, independent of the
supply voltage. The INA212-Q1 offers a fixed gain of
1000 V/V, INA213A-Q1 offers a fixed gain of 50 V/V,
and the INA214-Q1 offers a fixed gain of 100 V/V.
The low offset of the zero-drift architecture enables
current sensing with maximum drops across the
shunt as low as 10-mV full-scale.
The devices operate from a single 2.7-V to 26-V
power supply, drawing a maximum of 100 µA of
supply current. They are specified over the operating
temperature range of –40°C to 125°C and are offered
in an SC70 package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
GAIN (V/V)
INA212-Q1
1000
INA213A-Q1
SOT (6)
50
INA214-Q1
100
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Reference
Voltage
Supply
Simplified Schematic
R_SHUNT
Load
REF
INA21x-Q1
OUT
GND
R₁
R_{3 IN-}
Output
2.7 V to 26 V
V+
C_BYPASS
0.01 mF
to
0.1 mF
R₂
SC70
IN+
R₄
PRODUCT
INA212-Q1
INA213A-Q1
INA214-Q1
GAIN
1000
50
100
R₃ and R₄
1 kW
20 kW
10 kW
R₁ and R₂
1 MW
1 MW
1 MW
V_OUT = (I_LOAD ´ R_SHUNT) Gain + V_REF
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.