INA199A1 Datasheet, PDF (1/22 Pages) Texas Instruments – Voltage Output, High or Low Side Measurement, Bi-Directional Zerø-Drift Series CURRENT SHUNT MONITOR

QFN
Package
SC70
Package
INA199A1
INA199A2
INA199A3
www.ti.com
SBOS469B – MAY 2009 – REVISED FEBRUARY 2010
Voltage Output, High or Low Side Measurement, Bi-Directional Zerø-Drift Series
CURRENT SHUNT MONITOR
Check for Samples: INA199A1, INA199A2, INA199A3
FEATURES
1
•2 WIDE COMMON-MODE RANGE: –0.3V to 26V
• OFFSET VOLTAGE: ±150mV (Max)
(Enables shunt drops of 10mV full-scale)
• ACCURACY
– ±1.5% Gain Error (Max over temperature)
– 0.5mV/°C Offset Drift (Max)
– 10ppm/°C Gain Drift (Max)
• CHOICE OF GAINS:
– INA199A1: 50V/V
– INA199A2: 100V/V
– INA199A3: 200V/V
• QUIESCENT CURRENT: 100mA (max)
• PACKAGES: SC70, THIN QFN-10
APPLICATIONS
• NOTEBOOK COMPUTERS
• CELL PHONES
• TELECOM EQUIPMENT
• POWER MANAGEMENT
• BATTERY CHARGERS
• WELDING EQUIPMENT
Reference
Voltage
Supply
DESCRIPTION
The INA199Ax 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 100mA 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
GAIN
50
R₃ AND R₄
20kΩ
R₁ AND R₂
1MΩ
INA199A2
100
10kΩ
1MΩ
INA199A3
200
5kΩ
1MΩ
R_SHUNT
Load
REF
INA199Ax
OUT
GND
R₁
R_{3 IN-}
+2.7V to +26V
V+
C_BYPASS
0.01mF
to
0.1mF
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 © 2009–2010, Texas Instruments Incorporated