# KTH7801-X-C-QN16

**CONNTEK** · Magnetic Angle Sensors · QFN-16L(3x3)

KTH7801-X-C-QN16 from CONNTEK, in a QFN-16L(3x3). 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 | SSD | output | SSI data output. |
| 2 | A | output | One of the ABZ incremental output signals. |
| 3 | Z | output | One of the ABZ incremental output signals (zero index, once per revolution). |
| 4 | MOSI | input | SPI master data output (input to the device); pull-up to VDD if not used. |
| 5 | CS | input | SPI chip select; pull-up to VDD if not used. |
| 6 | B | output | One of the ABZ incremental coding signals. |
| 7 | MISO | output | SPI slave data output. |
| 8 | GND | power_in | Ground. |
| 9 | PWM | output | Pulse width modulation output. |
| 10 | TEST | input | Factory testing pin; must be connected directly to GND in the QFN-16L package. |
| 11 | MGL | output | Low magnetic field strength indication. |
| 12 | SCLK | input | SPI clock; pull-up to VDD if not used. |
| 13 | VDD | power_in | Power supply input. |
| 14 | NC | unconnected | Not connected. |
| 15 | SSCK | input | SSI data clock input; pull-down to GND if not used. |
| 16 | MGH | output | High magnetic field strength indication. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | CONNTEK |
| Package | QFN-16L(3x3) |
| Category | Magnetic Sensors |
| Pins | 17 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage |  | 3 |  | 5.5 | V |  | 4 |
| Operating temperature range |  | -40 |  | 125 | °C |  | 38 |
| Radial Magnet Diameter (on-axis) | Dmag | 10 |  | 30 | mm | On-axis magnet installation | 10 |
| Recommended Magnet Thickness (on-axis) | Tmag | 2.5 |  | 5 | mm | On-axis magnet installation | 10 |
| Chip Operating Magnetic Field (on-axis) | Bpk | 30 |  | 150 | mT | On-axis magnet installation | 10 |
| Air Gap (on-axis) | AG | 1 |  | 5 | mm | On-axis magnet installation | 10 |
| Rotational Speed (on-axis) | RS |  |  | 120 | krpm | On-axis magnet installation | 10 |
| Installation Deviation (on-axis) | D ISP | 0.3 |  | 1 | mm | On-axis magnet installation | 10 |
| Magnet or Ring Diameter (off-axis) | Dmag | 10 |  | 30 | mm | Off-axis magnet installation | 11 |
| Recommended Magnet Thickness (off-axis) | Tmag | 2.5 |  | 5 | mm | Off-axis magnet installation | 11 |
| Chip Operating Magnetic Field (off-axis) | Bpk | 30 |  | 150 | mT | Off-axis magnet installation | 11 |
| Air Gap (off-axis) | AG | 0.5 |  | 5 | mm | Off-axis magnet installation | 11 |
| Rotational Speed (off-axis) | RS |  |  | 120 | krpm | Off-axis magnet installation | 11 |
| Installation Deviation (off-axis) | D ISP | 0.5 |  | 2 | mm | Off-axis magnet installation | 11 |
| Temperature Coefficient of NdFeB Magnet | TCmag1 |  | -0.12 |  | %/◦C |  | 10 |
| Temperature Coefficient of SmCo Magnet | TCmag2 |  | -0.035 |  | %/◦C |  | 10 |
| Noise (1 sigma) |  |  | 0.015 |  | ° | KTH7801 | 38 |
| Time Constant | τ |  | 0.51 |  | ms | KTH7801 | 38 |

## CAD (KiCad official)

- Symbol: `KTH7801-X-C-QN16`
- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`
- 3D model: QFN-16L(3x3) (KiCad packages3D, STEP)
- 3D model files: `kth7801-x-c-qn16-etched.step` / `kth7801-x-c-qn16-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `kth7801-x-c-qn16.step` / `kth7801-x-c-qn16.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [CONNTEK datasheet](docs/kth7801-x-c-qn16-datasheet.pdf) (40 pp, sha256 `dc5145cd2f48c486`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/kth7801-x-c-qn16-datasheet.pdf)