Current Sense Amplifiers – Mouser Switzerland

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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: 2.39 CHF
18 399In Stock

Mfr. Part No.
INA281B1IDBVT

Mouser Part No
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 399In Stock

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2.39 CHF

1.80 CHF

1.64 CHF

1.47 CHF

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1.29 CHF

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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

INA281B1QDBVRQ1
Texas Instruments
1: 2.58 CHF
8 167In Stock

Mfr. Part No.
INA281B1QDBVRQ1

Mouser Part No
595-INA281B1QDBVRQ1

Texas Instruments

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

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Datasheet

8 167In Stock

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1.94 CHF

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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

INA281A4QDBVRQ1
Texas Instruments
1: 2.58 CHF
3 178In Stock

Mfr. Part No.
INA281A4QDBVRQ1

Mouser Part No
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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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: 2.58 CHF
1 707In Stock

Mfr. Part No.
INA281A5QDBVRQ1

Mouser Part No
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 707In Stock

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1.94 CHF

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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: 2.58 CHF
5 166In Stock

Mfr. Part No.
INA281A3QDBVRQ1

Mouser Part No
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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2.58 CHF

1.94 CHF

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1.60 CHF

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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

INA281B4QDBVRQ1
Texas Instruments
1: 2.58 CHF
4 116In Stock

Mfr. Part No.
INA281B4QDBVRQ1

Mouser Part No
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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2.58 CHF

1.94 CHF

1.78 CHF

1.60 CHF

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

INA281A2IDBVT
Texas Instruments
1: 2.42 CHF
559In Stock

Mfr. Part No.
INA281A2IDBVT

Mouser Part No
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

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2.42 CHF

1.81 CHF

1.65 CHF

1.48 CHF

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1.31 CHF

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: 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: 2.58 CHF
2 691In Stock

Mfr. Part No.
INA281B5QDBVRQ1

Mouser Part No
595-INA281B5QDBVRQ1

Texas Instruments

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

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Datasheet

2 691In Stock

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2.58 CHF

1.94 CHF

1.78 CHF

1.60 CHF

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1.35 CHF

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Min.: 1
Mult.: 1

: 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: 1.80 CHF
2 815In Stock

Mfr. Part No.
INA281A4IDBVR

Mouser Part No
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 815In Stock

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1.80 CHF

1.32 CHF

1.21 CHF

1.08 CHF

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0.894 CHF

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: 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: 1.83 CHF
2 739In Stock

Mfr. Part No.
INA281A5IDBVR

Mouser Part No
595-INA281A5IDBVR

Texas Instruments

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

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Datasheet

2 739In Stock

Cut Tape

1.83 CHF

1.35 CHF

1.24 CHF

1.10 CHF

Reel

0.894 CHF

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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: 2.00 CHF
2 127In Stock

Mfr. Part No.
INA281B1IDBVR

Mouser Part No
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

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2.00 CHF

1.49 CHF

1.36 CHF

1.23 CHF

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1.03 CHF

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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: 1.77 CHF
3 030In Stock

Mfr. Part No.
INA281B2IDBVR

Mouser Part No
595-INA281B2IDBVR

Texas Instruments

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

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Datasheet

3 030In Stock

Cut Tape

1.77 CHF

1.31 CHF

1.20 CHF

1.07 CHF

Reel

0.894 CHF

View

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: 1.77 CHF
2 275In Stock

Mfr. Part No.
INA281B3IDBVR

Mouser Part No
595-INA281B3IDBVR

Texas Instruments

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

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Datasheet

2 275In Stock

Cut Tape

1.77 CHF

1.31 CHF

1.20 CHF

1.07 CHF

Reel

0.894 CHF

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: 2.58 CHF
6 253In Stock

Mfr. Part No.
INA281A1QDBVRQ1

Mouser Part No
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

2.58 CHF

1.94 CHF

1.78 CHF

1.60 CHF

Reel

1.36 CHF

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

Reel, Cut Tape, MouseReel

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

INA281A2QDBVRQ1
Texas Instruments
1: 2.58 CHF
4 411In Stock

Mfr. Part No.
INA281A2QDBVRQ1

Mouser Part No
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

2.58 CHF

1.94 CHF

1.78 CHF

1.60 CHF

Reel

1.40 CHF

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: 2.06 CHF
1 446In Stock

Mfr. Part No.
INA281A3IDBVR

Mouser Part No
595-INA281A3IDBVR

Texas Instruments

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

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Datasheet

1 446In Stock

Cut Tape

2.06 CHF

1.53 CHF

1.40 CHF

1.25 CHF

Reel

1.07 CHF

View

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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: 2.58 CHF
5 247In Stock

Mfr. Part No.
INA281B2QDBVRQ1

Mouser Part No
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

2.58 CHF

1.94 CHF

1.78 CHF

1.60 CHF

Reel

1.36 CHF

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: 2.69 CHF
6 454In Stock

Mfr. Part No.
INA281B3QDBVRQ1

Mouser Part No
595-INA281B3QDBVRQ1

Texas Instruments

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

Learn More

Datasheet

6 454In Stock

Cut Tape

2.69 CHF

2.00 CHF

1.83 CHF

1.65 CHF

Reel

1.40 CHF

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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: 1.77 CHF
982In Stock
6 000Expected 19/11/2026

Mfr. Part No.
INA281A2IDBVR

Mouser Part No
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

982In Stock

6 000Expected 19/11/2026

Cut Tape

1.77 CHF

1.31 CHF

1.20 CHF

1.07 CHF

Reel

0.894 CHF

View

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: 2.39 CHF
404In Stock

Mfr. Part No.
INA281A4IDBVT

Mouser Part No
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

2.39 CHF

1.80 CHF

1.64 CHF

1.55 CHF

Reel

1.39 CHF

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: 2.00 CHF
257In Stock
6 000On Order

Mfr. Part No.
INA281A1IDBVR

Mouser Part No
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

257In Stock

6 000On Order

Cut Tape

2.00 CHF

1.49 CHF

1.36 CHF

1.23 CHF

Reel

1.02 CHF

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: 1.87 CHF
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
INA281B4IDBVR

Mouser Part No
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

1.87 CHF

1.39 CHF

1.26 CHF

1.13 CHF

Reel

0.955 CHF

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: 1.87 CHF
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
INA281B5IDBVR

Mouser Part No
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

1.87 CHF

1.39 CHF

1.26 CHF

1.13 CHF

Reel

0.894 CHF

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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