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INA281 Series

AEC-Q100, -4-V to 110-V, 1.3-MHz current sense amplifier

Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/

Catalog

AEC-Q100, -4-V to 110-V, 1.3-MHz current sense amplifier

PartPackage / CaseSlew RateVoltage - Input OffsetCurrent - Input BiasVoltage - Supply Span (Max) [Max]Supplier Device PackageCurrent - SupplyOperating Temperature [Min]Operating Temperature [Max]Voltage - Supply Span (Min) [Min]Mounting TypeAmplifier TypeNumber of CircuitsGain Bandwidth ProductQualificationGradeBoard TypeChannels per ICSupplied ContentsOutput TypeUtilized IC / PartCurrent - Supply (Main IC)-3db Bandwidth
Texas Instruments
INA281A2IDBVR
SC-74A, SOT-753
2.5 V/çs
55 µV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
Texas Instruments
INA281B1QDBVRQ1
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
AEC-Q100
Automotive
Texas Instruments
INA281B5IDBVT
SC-74A, SOT-753
2.5 V/çs
15 µV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
900 kHz
Texas Instruments
INA281A4IDBVT
SC-74A, SOT-753
2.5 V/çs
30 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
900 kHz
Texas Instruments
INA281A5QDBVRQ1
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
AEC-Q100
Automotive
Texas Instruments
INA281A3IDBVR
SC-74A, SOT-753
2.5 V/çs
30 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1 MHz
Texas Instruments
INA281A2QDBVRQ1
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
AEC-Q100
Automotive
Texas Instruments
INA281B1IDBVR
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
Texas Instruments
INA281A1IDBVT
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
Texas Instruments
INA281B3IDBVR
SC-74A, SOT-753
2.5 V/çs
30 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1 MHz
Texas Instruments
INA281A3IDBVT
SC-74A, SOT-753
2.5 V/çs
30 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1 MHz
Texas Instruments
INA281B2IDBVT
SC-74A, SOT-753
2.5 V/çs
55 µV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
Texas Instruments
INA281B3QDBVRQ1
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
AEC-Q100
Automotive
Texas Instruments
INA281B2IDBVR
SC-74A, SOT-753
2.5 V/çs
55 µV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
Texas Instruments
INA281EVM
2.5 V/çs
Current Sense
Fully Populated
1
Board(s)
Single-Ended
INA281
1.5 mA
1.3 MHz
Texas Instruments
INA281B5QDBVRQ1
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
AEC-Q100
Automotive
Texas Instruments
INA281A4QDBVRQ1
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
AEC-Q100
Automotive
Texas Instruments
INA281B5IDBVR
SC-74A, SOT-753
2.5 V/çs
15 µV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
900 kHz
Texas Instruments
INA281A1QDBVRQ1
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
AEC-Q100
Automotive
Texas Instruments
INA281B1IDBVT
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
Texas Instruments
INA281B4IDBVT
SC-74A, SOT-753
2.5 V/çs
30 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
900 kHz
Texas Instruments
INA281A1IDBVR
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
Texas Instruments
INA281B4QDBVRQ1
SC-74A, SOT-753
2.5 V/çs
100 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
AEC-Q100
Automotive
Texas Instruments
INA281A2IDBVT
SC-74A, SOT-753
2.5 V/çs
55 µV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1.3 MHz
Texas Instruments
INA281B3IDBVT
SC-74A, SOT-753
2.5 V/çs
30 çV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
1 MHz
Texas Instruments
INA281A5IDBVR
SC-74A, SOT-753
2.5 V/çs
15 µV
20 çA
20 V
SOT-23-5
1.5 mA
-40 °C
125 °C
2.7 V
Surface Mount
Current Sense
1
900 kHz

Key Features

• AEC-Q100 qualified for automotive applicationsTemperature grade 1: –40 °C to +125 °C, TAFunctional Safety-CapableDocumentation available to aid functional safety system designWide common-mode voltage:Operational voltage: −4 V to +110 VSurvival voltage: −20 V to +120 VExcellent CMRR:120-dB DC CMRR65-dB AC CMRR at 50 kHzAccuracy:Gain:Gain error: ±0.5% (maximum)Gain drift: ±20 ppm/°C (maximum)Offset:Offset voltage: ±55 µV (typical)Offset drift: ±0.1 µV/°C (typical)Available gains:INA281A1-Q1, INA281B1-Q1 : 20 V/VINA281A2-Q1, INA281B2-Q1 : 50 V/VINA281A3-Q1, INA281B3-Q1 : 100 V/VINA281A4-Q1, INA281B4-Q1 : 200 V/VINA281A5-Q1, INA281B5-Q1 : 500 V/VHigh bandwidth: 1.3 MHzSlew rate: 2.5V/µsQuiescent current: 1.5 mAAEC-Q100 qualified for automotive applicationsTemperature grade 1: –40 °C to +125 °C, TAFunctional Safety-CapableDocumentation available to aid functional safety system designWide common-mode voltage:Operational voltage: −4 V to +110 VSurvival voltage: −20 V to +120 VExcellent CMRR:120-dB DC CMRR65-dB AC CMRR at 50 kHzAccuracy:Gain:Gain error: ±0.5% (maximum)Gain drift: ±20 ppm/°C (maximum)Offset:Offset voltage: ±55 µV (typical)Offset drift: ±0.1 µV/°C (typical)Available gains:INA281A1-Q1, INA281B1-Q1 : 20 V/VINA281A2-Q1, INA281B2-Q1 : 50 V/VINA281A3-Q1, INA281B3-Q1 : 100 V/VINA281A4-Q1, INA281B4-Q1 : 200 V/VINA281A5-Q1, INA281B5-Q1 : 500 V/VHigh bandwidth: 1.3 MHzSlew rate: 2.5V/µsQuiescent current: 1.5 mA

Description

AI
The INA281-Q1 is a high-precision current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating precise measurement of recirculating currents in half-bridge applications. The combination of a low offset voltage, small gain error and high DC CMRR enables highly accurate current measurement. The INA281-Q1 is not only designed for DC current measurement, but also for high-speed applications (like fast overcurrent protection, for example) with a high bandwidth of 1.3 MHz and an 65-dB AC CMRR (at 50 kHz). The INA281-Q1 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA281-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic range for current-sensing applications. The INA281-Q1 is specified over an operating temperature range of −40 °C to +125 °C and is offered in a space-saving SOT-23 package with two pin-out variants. The INA281-Q1 is a high-precision current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating precise measurement of recirculating currents in half-bridge applications. The combination of a low offset voltage, small gain error and high DC CMRR enables highly accurate current measurement. The INA281-Q1 is not only designed for DC current measurement, but also for high-speed applications (like fast overcurrent protection, for example) with a high bandwidth of 1.3 MHz and an 65-dB AC CMRR (at 50 kHz). The INA281-Q1 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA281-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic range for current-sensing applications. The INA281-Q1 is specified over an operating temperature range of −40 °C to +125 °C and is offered in a space-saving SOT-23 package with two pin-out variants.