# TMCS1107A4BQDRQ1

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

TMCS1107A4BQDRQ1 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 of the isolated primary conductor (tied internally to pin 2); current flowing into IN+ is treated as positive, and the IN+ to IN- voltage relative to GND is rated at -420 V to 420 VPK. |
| 2 | IN+ | input | Second positive input current pin, internally connected to pin 1, carrying the input current through the 1.8 mΩ lead-frame conductor; the input voltage relative to GND is rated at -420 V to 420 VPK. |
| 3 | IN- | input | Negative input current pin of the isolated primary conductor (tied internally to pin 4); the return path for the measured current, with the input voltage relative to GND rated at -420 V to 420 VPK. |
| 4 | IN- | input | Second negative input current pin, internally connected to pin 3; it should be paired with IN+ using merged copper input leads as recommended in the layout guidance. |
| 5 | GND | power_in | Ground reference for the low-voltage (sensor and output) side of the device; all input voltage ratings and the VOUT swing are referenced to this pin. |
| 6 | NC | unconnected | No internal connection; the pin can tolerate capacitive or resistive connection to GND or VS (shorting to GND is recommended where acceptable), and its absolute maximum voltage range is GND - 0.3 V to VS + 0.3 V. |
| 7 | VOUT | output | Analog voltage output proportional to the input current; the output swing is limited to about 0.1 V to 0.02 V from the supply rail and 5 mV to 10 mV above GND into a 10 kΩ load, and it can drive at most 1 nF capacitive load without sustained oscillation. |
| 8 | VS | power_in | Low-voltage analog supply pin; for the TMCS1107A4B-Q1 the operating supply range is 4.5 V to 5.5 V (absolute maximum GND - 0.3 V to 6 V), with a 0.1 µF low-ESR decoupling capacitor recommended close to the pin. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TMCS1107A4BQDRQ1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `tmcs1107a4bqdrq1-etched.step` / `tmcs1107a4bqdrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmcs1107a4bqdrq1.step` / `tmcs1107a4bqdrq1.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/tmcs1107-q1) (44 pp, sha256 `7f52fb186d147cc2`, retrieved 2026-10-08, 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/tmcs1107a4bqdrq1-datasheet.pdf)