INA199B2DCKR Datasheet, PDF (1/28 Pages) Texas Instruments – Voltage Output, High or Low Side Measurement, Bi-Directional Zerø-Drift Series CURRENT SHUNT MONITOR

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QFN
Package
SC70
Package
INA199A1, INA199B1
INA199A2, INA199B2
INA199A3, INA199B3
SBOS469D – MAY 2009 – REVISED NOVEMBER 2012
Voltage Output, High or Low Side Measurement, Bi-Directional Zerø-Drift Series
CURRENT SHUNT MONITOR
Check for Samples: INA199A1, INA199B1, INA199A2, INA199B2, INA199A3, INA199B3
FEATURES
1
•2 WIDE COMMON-MODE RANGE: –0.3V to 26V
• OFFSET VOLTAGE: ±150μV (Max)
(Enables shunt drops of 10mV full-scale)
• ACCURACY
– ±1.5% Gain Error (Max over temperature)
– 0.5μV/°C Offset Drift (Max)
– 10ppm/°C Gain Drift (Max)
• CHOICE OF GAINS:
– INA199A1/B1: 50V/V
– INA199A2/B2: 100V/V
– INA199A3/B3: 200V/V
• QUIESCENT CURRENT: 100μA (max)
• PACKAGES: SC70, THIN QFN-10
APPLICATIONS
• NOTEBOOK COMPUTERS
• CELL PHONES
• TELECOM EQUIPMENT
• POWER MANAGEMENT
• BATTERY CHARGERS
• WELDING EQUIPMENT
DESCRIPTION
The INA199 series of voltage output current shunt
monitors can sense drops across shunts at common-
mode voltages from –0.3V to 26V, independent of the
supply voltage. Three fixed gains are available:
50V/V, 100V/V, and 200V/V. The low offset of the
Zerø-Drift architecture enables current sensing with
maximum drops across the shunt as low as 10mV
full-scale.
These devices operate from a single +2.7V to +26V
power supply, drawing a maximum of 100μA of
supply current. All versions are specified from –40°C
to +105°C, and offered in both SC70 and thin QFN-
10 packages.
PRODUCT FAMILY TABLE
PRODUCT
INA199A1/B1
GAIN
50
R₃ AND R₄
20kΩ
R₁ AND R₂
1MΩ
INA199A2/B2 100
10kΩ
1MΩ
INA199A3/B3 200
5kΩ
1MΩ
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
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009–2012, Texas Instruments Incorporated