# TSC1031IYDT

**STMicroelectronics** · Current Sense Amplifiers · SOIC-8

TSC1031IYDT from STMicroelectronics, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Vm | input | Analog input for the external sense resistor, where the measured current exits the shunt on the Vm side; absolute maximum -16 to 75 V relative to Vcc-. |
| 2 | A1 | output | Analog output used for the connection to the output resistor (Rf3 between A1 and Gnd balances the input filter resistors); limited to -0.3 V to Vcc+ + 0.3 V relative to Gnd. |
| 3 | SEL | input | Digital gain-select input that sets K2 to 2.5 (SEL = Gnd, gain 50 V/V) or 5 (SEL = Vcc+, gain 100 V/V), with VIL max 0.5 V and VIH min 1.2 V. |
| 4 | Out | output | Analog output voltage proportional to the sense voltage Vp-Vm, with a total gain of 50 V/V or 100 V/V and a short-circuit current of 15 to 26 mA. |
| 5 | Vcc+ | power_in | Positive power supply line, 2.7 to 5.5 V in single-supply configuration and absolute maximum 7 V relative to Gnd. |
| 6 | Gnd | power_in | Ground line, which is the reference for the Vcc+, SEL, A1 and Out pin voltages. |
| 7 | Vcc- | power_in | Negative power supply line, connected to Gnd in single-supply configuration or to a negative supply of -8 to 0 V (Vcc+ = 5.5 V max) in dual-supply configuration, with Vcc+ - Vcc- limited to 15 V. |
| 8 | Vp | input | Analog input for the external sense resistor, where the measured current enters the shunt on the Vp side; absolute maximum -16 to 75 V relative to Vcc-. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TSC1031IYDT`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `tsc1031iydt-etched.step` / `tsc1031iydt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tsc1031iydt.step` / `tsc1031iydt.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589896517474951168) (26 pp, sha256 `a95dbff886269326`, retrieved 2026-10-07, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tsc1031iydt-datasheet.pdf)