# TMCS1100A1QDR

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

TMCS1100A1QDR 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 | Positive input current pin; current flowing into IN+ is defined as positive, and the recommended input voltage on IN+ and IN- is -600 to 600 VPK relative to GND (pin 5). |
| 2 | IN+ | input | Second positive input current pin, internally tied to pin 1 through the 1.8 mΩ conductor; the recommended input voltage is -600 to 600 VPK relative to GND (pin 5). |
| 3 | IN- | input | Negative input current pin; the recommended input voltage is -600 to 600 VPK relative to GND (pin 5), and it is galvanically isolated from the low-voltage side (pins 5 to 8). |
| 4 | IN- | input | Second negative input current pin, internally tied to pin 3; the recommended input voltage is -600 to 600 VPK relative to GND (pin 5). |
| 5 | GND | power_in | Ground reference for the low-voltage side; the absolute maximum rating for VS, VREF and VOUT is referenced to GND, and the operating range is GND-0.3 V to VS + 0.3 V for the analog pins. |
| 6 | VREF | power_in | External zero-current output voltage reference; it sets VOUT at zero input current and must stay within GND - 0.3 V to VS + 0.3 V (absolute maximum), with source impedance kept below the limit given in the electrical characteristics table. |
| 7 | VOUT | output | Analog output voltage proportional to the input current; the linear output swing is limited to roughly GND and VS, and the absolute maximum range is GND - 0.3 V to VS + 0.3 V. |
| 8 | VS | power_in | Low-voltage supply pin; the operating supply is 3 V to 5.5 V for TMCS1100A1 to A3 and 4.5 V to 5.5 V for TMCS1100A4, with an absolute maximum of 6 V (GND - 0.3 V to 6 V), and a 0.1 µF low-ESR decoupling capacitor is recommended close to the pin. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TMCS1100A1QDR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `tmcs1100a1qdr-etched.step` / `tmcs1100a1qdr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmcs1100a1qdr.step` / `tmcs1100a1qdr.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/tmcs1100) (47 pp, sha256 `35f86b5c16bbe7f8`, retrieved 2026-10-10, 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 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/tmcs1100a1qdr-datasheet.pdf)