component
XCS7478
Public Made by Adomby adom
Si Change Analog To Digital Converters (ADC), SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 7d ago |
| viewers | 7d ago |
| package.json | 7d ago |
| page.json | 7d ago |
| README.md | 7d ago |
| xcs7478-etched.glb | 7d ago |
| xcs7478-etched.step | 7d ago |
| xcs7478-hero.glb | 7d ago |
| xcs7478-hero.overlay.json | 7d ago |
| xcs7478.glb | 7d ago |
| xcs7478.kicad_mod | 7d ago |
| xcs7478.kicad_sym | 7d ago |
| xcs7478.lbr | 7d ago |
| xcs7478.step | 7d ago |
XCS7478
Si Change · Analog To Digital Converters (ADC) · SOT-23-6
XCS7478 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 reference voltage for the ADC; the datasheet specifies a single supply of 4 V to 5.25 V and says VDD must be greater than or equal to the maximum VIN input to avoid saturation at the maximum conversion code. |
| 2 | GND | power_in | Analog input signal ground and the common circuit ground reference to which all analog and digital signals are referenced. |
| 3 | VIN | power_in | Single-ended analog signal input with an input range of 0 V to VDD. |
| 4 | SCLK | input | Serial clock input that provides the serial clock and acts as the clock source for the conversion process. |
| 5 | SDATA | output | Serial data output that delivers the conversion result as a stream beginning with four leading zeros, MSB first, and goes tri-state after the 12th falling edge of SCLK. |
| 6 | CS | input | Active-low chip select that both starts a conversion and frames the serial data output; CS must stay low for the 12 SCLK cycles, and driving it 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage (single supply) | VDD | 4 | 5.25 | V | 1 | ||
| Operating temperature range | -40 | 85 | ℃ | 1 | |||
| Maximum sample rate | 800 | KSPS | 1 | ||||
| Integral nonlinearity (INL) | INL | -0.5 | 0.5 | LSB | 2 | ||
| Differential nonlinearity (DNL) | DNL | -0.5 | 0.5 | LSB | 2 | ||
| Analog input voltage range (single-ended) | VIN | 0 | V | Single-ended input channel, range 0 V to VDD (upper limit printed as VDD, not a number) | 2 | ||
| Resolution | 8 | bit | No missing codes | 2 | |||
| Signal-to-noise and distortion (SNR) | SNR | 49 | dB | @100 KHz | 2 | ||
| Total harmonic distortion (THD) | THD | -68 | dB | @100 KHz | 2 | ||
| Typical power consumption | 4.8 | mW | 5V, 800 KSPS | 1 | |||
| Typical power consumption | 2.8 | mW | 4V, 800 KSPS | 1 |
CAD (KiCad official)
- Symbol:
XCS7478 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
xcs7478-etched.step/xcs7478-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xcs7478.step/xcs7478.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Si Change datasheet (4 pp, sha256
1393f8253374e7e5, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).