TSC240A1IDT

TSC240A1IDT is the SO-8, tape-and-reel ordering code of the STMicroelectronics TSC240 bidirectional current sense amplifier with a fixed gain of 20 V/V (A1 grade, top marking 240A1I). It senses current on rails across a -4 V to 100 V common-mode range while running from a 2.7 V to 5.5 V supply, so one part covers 12 V, 24 V, 48 V and higher-voltage bus monitoring in motor drives, power supplies, e-fuses and battery equipment. Datasheet limits that matter in production designs are a maximum gain error of 0.20%, gain drift of 2.5 ppm/°C, input offset of ±20 µV maximum and 132 dB CMRR, plus enhanced PWM rejection that keeps readings stable on switching nodes; together they hold measurement accuracy without per-unit calibration, cutting test time and field returns. Selection advice: the suffix letters set the package — IDT is SO8, IPT is TSSOP8 — the IYDT/IYPT codes are the AEC-Q100 automotive grades, and the A1/A2/A3 codes set gains of 20, 50 and 100 V/V, so quote the full ordering code rather than the family name.