Precision current sense for tight spaces
The Texas Instruments INA186A4IDCKT is a single-channel, zero-drift current sense amplifier in a SC-70-6 package. It measures current across a shunt resistor with a maximum input offset voltage of 3 µV, which keeps the measurement error small even at low shunt drops. The supply current sits at 48 µA, making it a fit for battery-powered or loop-powered monitors where every microamp counts. Rail-to-rail output lets it swing close to the supply rails, preserving dynamic range on a 1.7 V to 5.5 V supply. The -40°C to 125°C operating range covers automotive under-hood and industrial motor-drive environments.
33 kHz bandwidth — what it means for the loop
The gain-bandwidth product of 33 kHz sets the usable signal bandwidth. For DC current monitoring (battery charge/discharge, motor winding current, solenoid hold) this is plenty — the amplifier settles fast enough for a few-kHz PWM switching edge. It is not a part for high-frequency AC current sensing or fast overcurrent detection below a few tens of microseconds. The 0.3 V/µs slew rate matches the bandwidth; expect a clean step response on shunt voltages that change at moderate rates.
Sourcing and lifecycle
The INA186A4IDCKT is listed as Active and ROHS3 compliant. No end-of-life notice or last-time-buy schedule is in the record. For current pricing and availability, submit an RFQ — the part is sourced through independent distribution and quoted to order. The datasheet and pinout are available from Texas Instruments directly.