component
XC7477
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
markdownXC7477
Si Change · Analog To Digital Converters (ADC) · SOT-23-6
XC7477 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. |
| 2 | GND | power_in | Analog input signal ground and the common ground reference for all circuits; all analog and digital signals are referenced to this pin. |
| 3 | VIN | power_in | Single-ended analog signal input channel, input range 0 V to VDD. |
| 4 | SCLK | input | Serial clock input that provides the serial clock and serves as the clock source for the conversion process. |
| 5 | SDATA | output | Serial data output that delivers the conversion result as a serial stream, preceded by four leading zeros and sent MSB first. |
| 6 | CS | input | Active-low chip select that both starts a conversion and frames the serial data output. |
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) | VDD | 4 | 5.25 | V | single supply, 4 V to 5.25 V as printed | 2 | |
| Operating temperature range | -40 | 85 | °C | 1 | |||
| Maximum sampling rate | 800 | KSPS | 2 | ||||
| Analog input voltage range (VIN) | VIN | 0 | V | single-ended input, range 0 V to VDD as printed | 2 | ||
| Differential nonlinearity (DNL) | DNL | -1 | 1 | LSB | 2 | ||
| Integral nonlinearity (INL) | INL | -1 | 1 | LSB | 2 | ||
| Signal-to-noise and distortion (SNR) | SNR | 61.5 | dB | @100 KHz | 2 | ||
| Total harmonic distortion (THD) | THD | -73.5 | dB | @100 KHz | 2 | ||
| Typical power consumption at 5 V, 800 KSPS | 5.25 | mW | 5 V, 800 KSPS | 1 | |||
| Typical power consumption at 4 V, 800 KSPS | 3.45 | mW | 4 V, 800 KSPS | 1 | |||
| Time after SDATA tri-state before next CS falling edge | 1 | μS | CS must stay high until 1 μS after SDATA enters tri-state before the next conversion starts | 3 |
CAD (KiCad official)
- Symbol:
XC7477 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
xc7477-etched.step/xc7477-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xc7477.step/xc7477.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Si Change datasheet (4 pp, sha256
3aeb5783e6b3ccf0, 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).