Current Sense Amplifiers – Mouser Mexico

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INA281/INA281-Q1 Current Sense Amplifier

Texas Instruments INA281/INA281-Q1 Current Sense Amplifier can measure voltage drops across shunt resistors over a wide common-mode range from –4V to 110V. The negative common-mode voltage allows the device to operate below ground, thus accommodating precise measurement of recirculating currents in half-bridge applications. Combining a low offset voltage, small gain error, and high DC CMRR enables highly accurate current measurement. The Texas Instruments INA281/INA281-Q1 is not only designed for DC current measurement but also high-speed applications (like fast over current protection, for example) with a high bandwidth of 1.3MHz and a 65dB AC CMRR (at 50kHz).

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Part #

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B1IDBVR

INA281B1IDBVT
Texas Instruments
1: $3.86
18,396In Stock

Mfr. Part #
INA281B1IDBVT

Mouser Part #
595-INA281B1IDBVT

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B1IDBVR

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Datasheet

18,396In Stock

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$3.86

$2.90

$2.65

$2.38

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$2.08

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: 250

INA281

1 Channel

1.3 MHz

48 V

140 dB

20 uA

100 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

INA281B4QDBVRQ1
Texas Instruments
1: $4.17
4,116In Stock

Mfr. Part #
INA281B4QDBVRQ1

Mouser Part #
595-INA281B4QDBVRQ1

Texas Instruments

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

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Datasheet

4,116In Stock

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$4.17

$3.13

$2.87

$2.59

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: 3,000

INA281

1 Channel

900 kHz

48 V

140 dB

20 uA

30 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-3-5

AEC-Q100

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Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

INA281A4QDBVRQ1
Texas Instruments
1: $4.17
3,178In Stock

Mfr. Part #
INA281A4QDBVRQ1

Mouser Part #
595-INA281A4QDBVRQ1

Texas Instruments

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

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Datasheet

3,178In Stock

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$4.17

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: 3,000

INA281

1 Channel

900 kHz

48 V

140 dB

20 uA

30 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-3-5

AEC-Q100

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Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

INA281A5QDBVRQ1
Texas Instruments
1: $4.17
1,704In Stock

Mfr. Part #
INA281A5QDBVRQ1

Mouser Part #
595-INA281A5QDBVRQ1

Texas Instruments

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

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Datasheet

1,704In Stock

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$4.17

$3.13

$2.87

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: 3,000

INA281

1 Channel

900 kHz

48 V

140 dB

20 uA

15 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-3-5

AEC-Q100

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Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

INA281A3QDBVRQ1
Texas Instruments
1: $4.17
5,166In Stock

Mfr. Part #
INA281A3QDBVRQ1

Mouser Part #
595-INA281A3QDBVRQ1

Texas Instruments

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

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Datasheet

5,166In Stock

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$4.17

$3.13

$2.87

$2.59

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$2.11

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: 3,000

INA281

1 Channel

1 MHz

48 V

140 dB

20 uA

30 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-3-5

AEC-Q100

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Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

INA281B1QDBVRQ1
Texas Instruments
1: $4.17
8,144In Stock

Mfr. Part #
INA281B1QDBVRQ1

Mouser Part #
595-INA281B1QDBVRQ1

Texas Instruments

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

Learn More

Datasheet

8,144In Stock

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$4.17

$3.13

$2.87

$2.59

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$2.20

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: 3,000

INA281

1 Channel

1.3 MHz

48 V

140 dB

20 uA

100 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-3-5

AEC-Q100

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Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A2IDBVR

INA281A2IDBVT
Texas Instruments
1: $3.91
559In Stock

Mfr. Part #
INA281A2IDBVT

Mouser Part #
595-INA281A2IDBVT

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A2IDBVR

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Datasheet

559In Stock

Cut Tape

$3.91

$2.91

$2.67

$2.39

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$2.12

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Mult.: 1

: 250

INA281

1 Channel

1.3 MHz

48 V

140 dB

20 uA

55 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

INA281B5QDBVRQ1
Texas Instruments
1: $4.17
2,691In Stock

Mfr. Part #
INA281B5QDBVRQ1

Mouser Part #
595-INA281B5QDBVRQ1

Texas Instruments

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

Learn More

Datasheet

2,691In Stock

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$4.17

$3.13

$2.87

$2.59

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$2.17

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: 3,000

INA281

1 Channel

900 kHz

48 V

140 dB

20 uA

15 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-3-5

AEC-Q100

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Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A4IDBVT

INA281A4IDBVR
Texas Instruments
1: $2.90
2,813In Stock

Mfr. Part #
INA281A4IDBVR

Mouser Part #
595-INA281A4IDBVR

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A4IDBVT

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Datasheet

2,813In Stock

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$2.90

$2.13

$1.95

$1.74

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$1.44

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Mult.: 1

: 3,000

INA281

1 Channel

900 kHz

48 V

120 dB

20 uA

30 uV

20 V

2.7 V

1.5 mA

0.5 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A5IDBVT

INA281A5IDBVR
Texas Instruments
1: $2.95
2,739In Stock

Mfr. Part #
INA281A5IDBVR

Mouser Part #
595-INA281A5IDBVR

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A5IDBVT

Learn More

Datasheet

2,739In Stock

Cut Tape

$2.95

$2.18

$1.99

$1.78

Reel

$1.44

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MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

900 kHz

48 V

120 dB

20 uA

15 uV

20 V

2.7 V

1.5 mA

0.5 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B1IDBVT

INA281B1IDBVR
Texas Instruments
1: $3.24
2,127In Stock

Mfr. Part #
INA281B1IDBVR

Mouser Part #
595-INA281B1IDBVR

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B1IDBVT

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Datasheet

2,127In Stock

Cut Tape

$3.24

$2.41

$2.20

$1.98

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$1.66

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MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

1.3 MHz

48 V

120 dB

20 uA

100 uV

20 V

2.7 V

1.5 mA

0.5 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B2IDBVT

INA281B2IDBVR
Texas Instruments
1: $2.86
3,030In Stock

Mfr. Part #
INA281B2IDBVR

Mouser Part #
595-INA281B2IDBVR

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B2IDBVT

Learn More

Datasheet

3,030In Stock

Cut Tape

$2.86

$2.12

$1.94

$1.73

Reel

$1.44

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MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

1.3 MHz

48 V

120 dB

20 uA

55 uV

20 V

2.7 V

1.5 mA

0.5 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B3IDBVT

INA281B3IDBVR
Texas Instruments
1: $2.86
2,255In Stock

Mfr. Part #
INA281B3IDBVR

Mouser Part #
595-INA281B3IDBVR

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B3IDBVT

Learn More

Datasheet

2,255In Stock

Cut Tape

$2.86

$2.12

$1.94

$1.73

Reel

$1.44

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

1 MHz

48 V

120 dB

20 uA

30 uV

20 V

2.7 V

1.5 mA

0.5 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

INA281A1QDBVRQ1
Texas Instruments
1: $4.17
6,253In Stock

Mfr. Part #
INA281A1QDBVRQ1

Mouser Part #
595-INA281A1QDBVRQ1

Texas Instruments

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

Learn More

Datasheet

6,253In Stock

Cut Tape

$4.17

$3.13

$2.87

$2.59

Reel

$2.20

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

1.3 MHz

48 V

140 dB

20 uA

100 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-3-5

AEC-Q100

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Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

INA281A2QDBVRQ1
Texas Instruments
1: $4.17
4,411In Stock

Mfr. Part #
INA281A2QDBVRQ1

Mouser Part #
595-INA281A2QDBVRQ1

Texas Instruments

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

Learn More

Datasheet

4,411In Stock

Cut Tape

$4.17

$3.13

$2.87

$2.59

Reel

$2.26

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

1.3 MHz

48 V

140 dB

20 uA

55 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-3-5

AEC-Q100

Reel, Cut Tape, MouseReel

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A3IDBVT

INA281A3IDBVR
Texas Instruments
1: $3.33
1,421In Stock

Mfr. Part #
INA281A3IDBVR

Mouser Part #
595-INA281A3IDBVR

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A3IDBVT

Learn More

Datasheet

1,421In Stock

Cut Tape

$3.33

$2.47

$2.26

$2.03

Reel

$1.73

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

1 MHz

48 V

140 dB

20 uA

30 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

INA281B2QDBVRQ1
Texas Instruments
1: $4.17
5,247In Stock

Mfr. Part #
INA281B2QDBVRQ1

Mouser Part #
595-INA281B2QDBVRQ1

Texas Instruments

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

Learn More

Datasheet

5,247In Stock

Cut Tape

$4.17

$3.13

$2.87

$2.59

Reel

$2.20

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

1.3 MHz

48 V

140 dB

20 uA

55 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-3-5

AEC-Q100

Reel, Cut Tape, MouseReel

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

INA281B3QDBVRQ1
Texas Instruments
1: $4.34
7,029In Stock

Mfr. Part #
INA281B3QDBVRQ1

Mouser Part #
595-INA281B3QDBVRQ1

Texas Instruments

Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current

Learn More

Datasheet

7,029In Stock

Cut Tape

$4.34

$3.24

$2.96

$2.67

Reel

$2.26

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

1 MHz

48 V

140 dB

20 uA

30 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-3-5

AEC-Q100

Reel, Cut Tape, MouseReel

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A2IDBVT

INA281A2IDBVR
Texas Instruments
1: $2.86
127In Stock
6,000Expected 11/19/2026

Mfr. Part #
INA281A2IDBVR

Mouser Part #
595-INA281A2IDBVR

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A2IDBVT

Learn More

Datasheet

127In Stock

6,000Expected 11/19/2026

Cut Tape

$2.86

$2.12

$1.94

$1.73

Reel

$1.44

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MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

1.3 MHz

48 V

120 dB

20 uA

55 uV

20 V

2.7 V

1.5 mA

0.5 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A4IDBVR

INA281A4IDBVT
Texas Instruments
1: $3.86
404In Stock

Mfr. Part #
INA281A4IDBVT

Mouser Part #
595-INA281A4IDBVT

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A4IDBVR

Learn More

Datasheet

404In Stock

Cut Tape

$3.86

$2.90

$2.65

$2.51

Reel

$2.24

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

INA281

1 Channel

900 kHz

48 V

140 dB

20 uA

30 uV

20 V

2.7 V

1.5 mA

0.07 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A1IDBVT

INA281A1IDBVR
Texas Instruments
1: $3.24
211In Stock
6,000On Order

Mfr. Part #
INA281A1IDBVR

Mouser Part #
595-INA281A1IDBVR

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A1IDBVT

Learn More

Datasheet

211In Stock

6,000On Order

Cut Tape

$3.24

$2.41

$2.20

$1.98

Reel

$1.65

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

1.3 MHz

48 V

120 dB

20 uA

100 uV

20 V

2.7 V

1.5 mA

0.5 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B4IDBVT

INA281B4IDBVR
Texas Instruments
1: $3.03
Non-Stocked Lead-Time 9 Weeks

Mfr. Part #
INA281B4IDBVR

Mouser Part #
595-INA281B4IDBVR

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B4IDBVT

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

Cut Tape

$3.03

$2.25

$2.04

$1.83

Reel

$1.55

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

900 kHz

48 V

120 dB

20 uA

30 uV

20 V

2.7 V

1.5 mA

0.5 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B5IDBVT

INA281B5IDBVR
Texas Instruments
1: $3.03
Non-Stocked Lead-Time 9 Weeks

Mfr. Part #
INA281B5IDBVR

Mouser Part #
595-INA281B5IDBVR

Texas Instruments

Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B5IDBVT

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

Cut Tape

$3.03

$2.25

$2.04

$1.83

Reel

$1.44

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

INA281

1 Channel

900 kHz

48 V

120 dB

20 uA

15 uV

20 V

2.7 V

1.5 mA

0.5 %

- 40 C

+ 125 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

INA281/INA281-Q1 Current Sense Amplifier

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