component
XC7478
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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownXC7478
Si Change · Analog To Digital Converters (ADC) · SOT-23-6
XC7478 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, range 4 V to 5.25 V; VDD should be kept at or above the maximum VIN input signal to avoid saturating the maximum conversion code. |
| 2 | GND | power_in | Analog input signal ground and the common ground reference for all circuit blocks; all analog and digital signals are referenced to this pin. |
| 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 is used as the clock source for the conversion process; the conversion ends at the 12th falling edge of SCLK. |
| 5 | SDATA | tri_state | Serial data output delivering the conversion result MSB first after four leading zeros; SDATA enters three-state when the conversion cycle ends. |
| 6 | CS | input | Active-low chip select that both starts a conversion and frames the serial data output; CS must be pulled high after 12 SCLK clocks and held high until SDATA is three-stated, plus 1 µs, before the next conversion is started. |
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 (VDD) range | VDD | 4 | 5.25 | V | 2 | ||
| Operating temperature range | -40 | 85 | ℃ | 1 | |||
| Maximum sampling rate | 800 | KSPS | 1 | ||||
| Integral nonlinearity (INL) | INL | -0.5 | 0.5 | LSB | 2 | ||
| Differential nonlinearity (DNL) | DNL | -0.5 | 0.5 | LSB | 2 |
CAD (KiCad official)
- Symbol:
XC7478 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
xc7478-etched.step/xc7478-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xc7478.step/xc7478.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Si Change datasheet (4 pp, sha256
4007af61345b767d, 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, 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).