# XC7886

**Si Change** · Analog To Digital Converters (ADC) · SOT-23-6

XC7886 from Si Change, in a SOT-23-6. 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 | VDD | power_in | Power supply input, which also serves as the ADC reference voltage; the single supply is 4 V to 5.25 V, and VDD should be kept greater than or equal to the maximum VIN signal to avoid saturating the maximum conversion code. |
| 2 | GND | power_in | Analog input signal ground; all analog and digital signals are referenced to this pin. |
| 3 | VIN | power_in | Single-ended analog signal input, unipolar with a 0 V to VDD range. |
| 4 | SCLK | input | Serial clock input; it drives the conversion, with the sampling period ending at the third falling edge and the conversion completing at the 16th falling edge. |
| 5 | SDO | output | Serial data output that delivers the 12-bit conversion result MSB first after four leading zeros, and enters tri-state after the 16th falling SCLK edge. |
| 6 | CS | input | Active-low chip select; a falling edge wakes the device and starts a conversion, and taking CS high before 10 SCLK cycles aborts the conversion with no valid data on the next cycle. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Si Change |
| Package | SOT-23-6 |
| Category | Data Acquisition |
| Pins | 6 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (single supply) | VDD | 4 |  | 5.25 | V |  | 2 |
| Maximum sample rate |  |  |  | 800 | KSPS |  | 2 |
| Maximum serial interface clock (SPI) |  |  |  | 16 | MHz |  | 2 |
| Integral nonlinearity (INL) |  | -1.5 |  | 1.5 | LSB |  | 2 |
| Differential nonlinearity (DNL) |  | -1.25 |  | 1.25 | LSB |  | 2 |
| Operating temperature range |  | -40 |  | 85 | ℃ |  | 1 |
| Average power consumption |  |  | 6.05 |  | mW | 5V, 800 KSPS | 1 |
| Average power consumption |  |  | 3.5 |  | mW | 4V, 800 KSPS | 1 |
| Signal-to-noise ratio (SNR) |  |  | 72.5 |  | dB | @100 KHz | 2 |
| Total harmonic distortion (THD) |  |  | -84.5 |  | dB | @100 KHz | 2 |

## CAD (KiCad official)

- Symbol: `XC7886`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `xc7886-etched.step` / `xc7886-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `xc7886.step` / `xc7886.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Si Change datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603387066055483392) (4 pp, sha256 `781539d2df0bd181`, retrieved 2026-10-18, 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/xc7886-datasheet.pdf)