Active current-sense amplifier in 8-SOIC
The STMicroelectronics TSC2011IYDT is a dedicated current-sense amplifier in an 8-SOIC package, designed to measure current by amplifying the voltage drop across a shunt resistor. The -3 dB bandwidth of 750 kHz and slew rate of 7 V/µs give it enough speed to capture fast load transients in motor-drive or power-supply feedback loops. With a single circuit and a supply current of 1.6 mA, it keeps the BOM lean for per-rail monitoring.
The 7 V/µs slew rate and 750 kHz bandwidth define the amplifier's response to a step change in sensed current. Compared to the TSC200IDT with 1 MHz bandwidth, the TSC2011IYDT has a lower input bias current of 350 µA.
The 2.7 V minimum supply lets this amplifier run from a 3.3 V rail with headroom for the 500 µV input offset voltage (typical) and the output swing to the ADC reference. The 5.5 V maximum covers 5 V ±10% rails without a separate regulator.
For dual-sourcing resilience, the TSC200IDT is a pin-compatible current-sense amplifier with a 1 MHz bandwidth and a lower input bias current of 500 nA.