INA293B2IDBVR

Texas Instruments

Texas Instruments INA293B2IDBVR, Current Sense Amplifier, 1 Circuit, 2.5V/µs Slew Rate, 1.3 MHz Bandwidth, 2.7 V to 20 V Supply, SOT-23-5, -40°C to 125°C.

Texas Instruments INA293B2IDBVR
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MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T

Technical specifications

INA293B2IDBVR specifications
Parameter / AttributeSpecification / Value
MountingSurface Mount
Amplifier typeCurrent Sense
Voltage - input offset15 µV
Voltage - supply span2.7 V
Current - supply1.5mA
Current - input bias20 µA
Operating temperature-40°C ~ 125°C
-3db bandwidth1.3 MHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate2.5V/µs
CaseSC-74A, SOT-753
Number of circuits1

Technical details

1.3 MHz bandwidth, 15 µV offset — what they mean for shunt-based current sensing

Its 1.3 MHz -3 dB bandwidth covers the switching frequencies of most DC-DC converters and motor-drive PWM stages, so you get a faithful reproduction of the current waveform rather than a filtered average. The 15 µV input offset voltage sets the floor on the minimum shunt voltage you can resolve — at a 10 mΩ shunt, that offset corresponds to 1.5 mA of apparent current error, which matters for low-current monitoring in battery-powered or precision-load applications. Supply range spans 2.7 V to 20 V, letting it run directly off a 3.3 V, 5 V, or 12 V rail without an extra LDO.

Slew rate and response time for overcurrent detection

The 2.5 V/µs slew rate determines how fast the output can swing when a fault current appears. For a 10 mΩ shunt and a 50 A step, the output jumps 500 mV; at 2.5 V/µs, the output reaches that level in 200 ns — fast enough to trigger a comparator or ADC interrupt before the current exceeds the silicon limit. If your application needs sub-microsecond fault response, this part keeps the signal chain tight.

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