INA191 Series

40V, ultra-precise current sense amplifier with ENABLE and picoamp IB in WCSP

Catalog

40V, ultra-precise current sense amplifier with ENABLE and picoamp IB in WCSP

Part	Amplifier Type	Gain Bandwidth Product	Current - Input Bias	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Supplier Device Package [y]	Supplier Device Package [x]	Voltage - Supply Span (Max) [Max]	Current - Supply	Voltage - Supply Span (Min) [Min]	Voltage - Input Offset	Number of Circuits	Mounting Type	Slew Rate	Output Type	Package / Case
Texas Instruments INA191A1IYFDR	Current Sense	45 kHz	100 pA	-40 °C	125 °C	6-DSBGA	0.77	1.17	5.5 V	43 mA	1.7 V	2.5 µV	1	Surface Mount	0.3 V/Ás	Rail-to-Rail	6-XFBGA DSBGA
Texas Instruments INA191A2IYFDR	Current Sense	37 kHz	100 pA	-40 °C	125 °C	6-DSBGA	0.77	1.17	5.5 V	43 µA	1.7 V	2.5 µV	1	Surface Mount	0.3 V/Ás	Rail-to-Rail	6-XFBGA DSBGA
Texas Instruments INA191A5IYFDR	Current Sense	27 kHz	100 pA	-40 °C	125 °C	6-DSBGA	0.77	1.17	5.5 V	43 mA	1.7 V	2.5 µV	1	Surface Mount	0.3 V/Ás	Rail-to-Rail	6-XFBGA DSBGA
Texas Instruments INA191A3IYFDR	Current Sense	37 kHz	100 pA	-40 °C	125 °C	6-DSBGA	0.77	1.17	5.5 V	43 µA	1.7 V	2.5 µV	1	Surface Mount	0.3 V/Ás	Rail-to-Rail	6-XFBGA DSBGA
Texas Instruments INA191A4IYFDR	Current Sense		100 pA	-40 °C	125 °C	6-DSBGA	0.77	1.17	5.5 V	43 mA	1.7 V	2.5 µV	1	Surface Mount	0.3 V/Ás	Rail-to-Rail	6-XFBGA DSBGA

Catalog

40V, ultra-precise current sense amplifier with ENABLE and picoamp IB in WCSP

Key Features

• Low power:Supply voltage, V S: 1.7 V to 5.5 VShutdown current: 100 nA (max INA191)Quiescent current: 43 µA at 25 °C (INA191)Low input bias currents: 100 pA (typical) (enables microamp current measurement)Bidirectional current measurement (INA2191)Accuracy:±0.25% max gain error (A2 to A5 devices)7-ppm/°C gain drift (maximum)±12 µV (maximum) offset voltage0.13-µV/°C offset drift (maximum)Wide common-mode voltage: –0.2 V to +40 VGain options:INAx191A1: 25 V/VINAx191A2: 50 V/VINAx191A3: 100 V/VINAx191A4: 200 V/VINAx191A5: 500 V/VPackages:INA191: 0.895-mm 2 DSBGAINA2191: 1.79-mm 2 DSBGALow power:Supply voltage, V S: 1.7 V to 5.5 VShutdown current: 100 nA (max INA191)Quiescent current: 43 µA at 25 °C (INA191)Low input bias currents: 100 pA (typical) (enables microamp current measurement)Bidirectional current measurement (INA2191)Accuracy:±0.25% max gain error (A2 to A5 devices)7-ppm/°C gain drift (maximum)±12 µV (maximum) offset voltage0.13-µV/°C offset drift (maximum)Wide common-mode voltage: –0.2 V to +40 VGain options:INAx191A1: 25 V/VINAx191A2: 50 V/VINAx191A3: 100 V/VINAx191A4: 200 V/VINAx191A5: 500 V/VPackages:INA191: 0.895-mm 2 DSBGAINA2191: 1.79-mm 2 DSBGA

Description

The INAx191 is a low-power, voltage-output, current-shunt monitor (also called a current-sense amplifier) that is commonly used for overcurrent protection, precision-current measurement for system optimization, or in closed-loop feedback circuits. This device can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. The low input bias current of the INAx191 permits the use of larger current-sense resistors, and thus provides accurate current measurements in the µA range. Five fixed gains are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement, and allows for smaller sense resistors with lower power loss while still providing accurate current measurements. The INA191 operates from a single 1.7-V to 5.5-V power supply, drawing a maximum of 65 µA of supply current when enabled and only 100 nA when disabled. The device is specified over the operating temperature range of –40 °C to +125 °C, and offered in a DSBGA-6 (INA191) and DSBGA-12 (INA2191) packages. The INAx191 is a low-power, voltage-output, current-shunt monitor (also called a current-sense amplifier) that is commonly used for overcurrent protection, precision-current measurement for system optimization, or in closed-loop feedback circuits. This device can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. The low input bias current of the INAx191 permits the use of larger current-sense resistors, and thus provides accurate current measurements in the µA range. Five fixed gains are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement, and allows for smaller sense resistors with lower power loss while still providing accurate current measurements. The INA191 operates from a single 1.7-V to 5.5-V power supply, drawing a maximum of 65 µA of supply current when enabled and only 100 nA when disabled. The device is specified over the operating temperature range of –40 °C to +125 °C, and offered in a DSBGA-6 (INA191) and DSBGA-12 (INA2191) packages.