INA199 Datasheet, PDF (1/34 Pages) Texas Instruments – Voltage Output Current Shunt Monitor

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INA199
SBOS469E – APRIL 2009 – REVISED DECEMBER 2015
INA199 26-V, Bidirectional, Zero-Drift, Low- or High-Side,
Voltage Output Current Shunt Monitor
1 Features
•1 Wide Common-Mode Range: –0.3 V to 26 V
• Offset Voltage: ±150 μV (Maximum)
(Enables shunt drops of 10-mV full-scale)
• Accuracy
– ±1.5% Gain Error (Maximum Over
Temperature)
– 0.5-μV/°C Offset Drift (Maximum)
– 10-ppm/°C Gain Drift (Maximum)
• Choice of Gains:
– INA199x1: 50 V/V
– INA199x2: 100 V/V
– INA199x3: 200 V/V
• Quiescent Current: 100 μA (Maximum)
• Packages: SC70, UQFN-10
2 Applications
• Notebook Computers
• Cell Phones
• Qi-Compliant Wireless Charging Transmitters
• Telecom Equipment
• Power Management
• Battery Chargers
• Welding Equipment
3 Description
The INA199 series of voltage output, current shunt
monitors (also called current-sense amplifiers) can
sense drops across shunts at common-mode
voltages from –0.3 V to 26 V, independent of the
supply voltage. Three fixed gains are available:
50 V/V, 100 V/V, and 200 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.
These devices operate from a single 2.7-V to 26-V
power supply, drawing a maximum of 100 μA of
supply current. All versions are specified from –40°C
to 105°C, and offered in both SC70-6 and thin UQFN-
10 packages.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
INA199
SC70 (6)
UQFN (10)
2.00 mm × 1.25 mm
1.80 mm × 1.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Reference
Voltage
Supply
R_SHUNT
Load
REF
GND
+2.7V to +26V
V+
C_BYPASS
0.01mF
to
0.1mF
OUT
R₁
R_{3 IN-}
IN+
R₂
R₄
Output
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.