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).

Results: 23
Select Image Part # Mfr. Description Datasheet Availability Pricing (HKD) Filter the results in the table by unit price based on your quantity. Qty. RoHS ECAD Model Series Number of Channels GBP - Gain Bandwidth Product Vcm - Common Mode Voltage CMRR - Common Mode Rejection Ratio Ib - Input Bias Current Vos - Input Offset Voltage Supply Voltage - Max Supply Voltage - Min Operating Supply Current Gain Error Minimum Operating Temperature Maximum Operating Temperature Mounting Style Package/Case Qualification SR - Slew Rate Packaging
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B1IDBVR 18,396In Stock
Cut Tape
HK$24.41
HK$18.33
HK$16.77
HK$15.04
Reel
HK$12.82
Min.: 1
Mult.: 1
: 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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current 4,886In Stock
Cut Tape
HK$26.39
HK$19.81
HK$18.17
HK$16.36
Reel
HK$13.32
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current 3,168In Stock
Cut Tape
HK$26.39
HK$19.81
HK$18.17
HK$16.36
Reel
HK$13.32
Min.: 1
Mult.: 1
: 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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current 1,189In Stock
Cut Tape
HK$26.39
HK$19.81
HK$18.17
HK$16.36
Reel
HK$13.73
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current 4,125In Stock
Cut Tape
HK$26.39
HK$19.81
HK$18.17
HK$16.36
Reel
HK$13.23
Min.: 1
Mult.: 1
: 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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current 2,691In Stock
Cut Tape
HK$26.39
HK$19.81
HK$18.17
HK$16.36
Reel
HK$13.73
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A5IDBVT 2,729In Stock
Cut Tape
HK$18.66
HK$13.81
HK$12.58
HK$11.26
Reel
HK$9.12
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current 6,655In Stock
Cut Tape
HK$26.39
HK$19.81
HK$18.17
HK$16.36
Reel
HK$13.15
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B2IDBVT 2,986In Stock
Cut Tape
HK$18.08
HK$13.40
HK$12.25
HK$10.93
Reel
HK$9.12
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B3IDBVT 2,051In Stock
Cut Tape
HK$18.08
HK$13.40
HK$12.25
HK$10.93
Reel
HK$9.12
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current 6,042In Stock
Cut Tape
HK$26.39
HK$19.81
HK$18.17
HK$16.36
Reel
HK$13.89
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current 4,158In Stock
Cut Tape
HK$26.39
HK$19.81
HK$18.17
HK$16.36
Reel
HK$14.30
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current 1,387In Stock
3,000Expected 28/1/2027
Cut Tape
HK$26.39
HK$19.81
HK$18.17
HK$16.36
Reel
HK$13.89
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers AEC-Q100 -4-V to 11 0-V 1.3-MHz current 6,852In Stock
Cut Tape
HK$27.45
HK$20.47
HK$18.74
HK$16.85
Reel
HK$14.30
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A2IDBVT 127In Stock
12,000On Order
Cut Tape
HK$18.08
HK$13.40
HK$12.25
HK$10.93
Reel
HK$9.12
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A4IDBVT 2,734In Stock
3,000Expected 11/1/2027
Cut Tape
HK$18.33
HK$13.48
HK$12.33
HK$11.01
Reel
HK$9.12
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A4IDBVR 404In Stock
Cut Tape
HK$24.41
HK$18.33
HK$16.77
HK$15.86
Reel
HK$14.14
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A1IDBVT 111In Stock
6,000On Order
Cut Tape
HK$21.04
HK$15.62
HK$14.30
HK$12.82
Reel
HK$10.44
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A3IDBVT 778In Stock
3,000Expected 5/10/2026
Cut Tape
HK$21.04
HK$15.62
HK$14.30
HK$12.82
Reel
HK$10.93
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B1IDBVT
13,885On Order
Cut Tape
HK$20.47
HK$15.21
HK$13.89
HK$12.49
Reel
HK$10.52
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281A2IDBVR
996On Order
Cut Tape
HK$24.66
HK$18.33
HK$16.77
HK$15.04
Reel
HK$14.22
Min.: 1
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 2.5 V/us Reel, Cut Tape, MouseReel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B4IDBVT Non-Stocked Lead-Time 12 Weeks
Reel
HK$9.78
HK$9.54
Min.: 3,000
Mult.: 3,000
: 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 2.5 V/us Reel
Texas Instruments Current Sense Amplifiers -4-V to 110-V 1.3-M Hz high-precision c A 595-INA281B5IDBVT Non-Stocked Lead-Time 12 Weeks
Reel
HK$9.12
HK$8.88
Min.: 3,000
Mult.: 3,000
: 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 2.5 V/us Reel