XC11663

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

XC11663 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	Supply input, operating from 3.3 V to 5.25 V, which also serves as the ADC reference voltage; the datasheet recommends a 1 µF and 10 nF decoupling capacitor pair placed as close to the pins as possible.
2	GND	power_in	Ground reference for analog input signal; all analog and digital signals are referenced to this pin.
3	AIN	input	Unipolar single-ended analog signal input with an input range of 0 V to VDD.
4	SCLK	input	Serial clock input that clocks out the output data and sets the conversion clock source.
5	DOUT	output	Serial data output for the conversion result, shifted out MSB first; after the conversion cycle the pin goes to high impedance.
6	CS	input	Active-low chip select that gates SCLK, starts a conversion, and frames the output data; pulling CS high before 10 SCLK cycles aborts the conversion.

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	Max	Unit	Page
Single supply voltage (operating range)	VDD	3.3	5.25	V	1
Operating temperature range		-40	85	℃	1
Maximum sampling rate			500	KSPS	2
Integral nonlinearity error (INL)	INL	-0.5	0.5	LSB	2
Differential nonlinearity error (DNL)	DNL	-0.5	0.5	LSB	2

CAD (KiCad official)

Symbol: XC11663
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)
3D model files: xc11663-etched.step / xc11663-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xc11663.step / xc11663.glb are the bare package body.

Provenance

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

Datasheet: Si Change datasheet (4 pp, sha256 39ec2e7f75d8fc64, retrieved 2026-10-17, 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

# XC11663

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

XC11663 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 | Supply input, operating from 3.3 V to 5.25 V, which also serves as the ADC reference voltage; the datasheet recommends a 1 µF and 10 nF decoupling capacitor pair placed as close to the pins as possible. |
| 2 | GND | power_in | Ground reference for analog input signal; all analog and digital signals are referenced to this pin. |
| 3 | AIN | input | Unipolar single-ended analog signal input with an input range of 0 V to VDD. |
| 4 | SCLK | input | Serial clock input that clocks out the output data and sets the conversion clock source. |
| 5 | DOUT | output | Serial data output for the conversion result, shifted out MSB first; after the conversion cycle the pin goes to high impedance. |
| 6 | CS | input | Active-low chip select that gates SCLK, starts a conversion, and frames the output data; pulling CS high before 10 SCLK cycles aborts the conversion. |

## 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 |
|---|---|---|---|---|---|---|---|
| Single supply voltage (operating range) | VDD | 3.3 |  | 5.25 | V |  | 1 |
| Operating temperature range |  | -40 |  | 85 | ℃ |  | 1 |
| Maximum sampling rate |  |  |  | 500 | KSPS |  | 2 |
| Integral nonlinearity error (INL) | INL | -0.5 |  | 0.5 | LSB |  | 2 |
| Differential nonlinearity error (DNL) | DNL | -0.5 |  | 0.5 | LSB |  | 2 |

## CAD (KiCad official)

- Symbol: `XC11663`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `xc11663-etched.step` / `xc11663-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `xc11663.step` / `xc11663.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/8603387070601973760) (4 pp, sha256 `39ec2e7f75d8fc64`, retrieved 2026-10-17, 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/xc11663-datasheet.pdf)