# TMCS1101A4BQDR

**Texas Instruments** · Current Sensors · SOIC-8

TMCS1101A4BQDR from Texas Instruments, 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 | IN+ | input | Isolated input current positive terminal; 30A continuous RMS at 25°C, ±5.75A linear measurement range at VS=5V. |
| 2 | IN+ | input | Isolated input current positive terminal; parallel path to pin 1 for current distribution. |
| 3 | IN- | input | Isolated input current negative return terminal; parallel connection to pin 4 completing the measurement loop. |
| 4 | IN- | input | Isolated input current negative return terminal; parallel to pin 3 for return path. |
| 5 | GND | power_in | Analog ground reference for the isolated low-voltage output signal chain. |
| 6 | NC | unconnected | No connection pin with 1MΩ impedance; GND ≤ VNC ≤ VS; can be capacitively or resistively connected, short to GND recommended. |
| 7 | VOUT | output | Analog output voltage proportional to input current at 400mV/A sensitivity; 0.5×VS zero-current offset, operating range GND+5mV to VS-0.02V, 80kHz bandwidth. |
| 8 | VS | power_in | Analog power supply voltage for output signal chain; operating range 4.5V to 5.5V for TMCS1101A4B variant. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Magnetic Sensors |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TMCS1101A4BQDR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `tmcs1101a4bqdr-etched.step` / `tmcs1101a4bqdr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmcs1101a4bqdr.step` / `tmcs1101a4bqdr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tmcs1101) (46 pp, sha256 `e9082d3b71c841e2`, retrieved 2026-09-26, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/tmcs1101a4bqdr-datasheet.pdf)