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XC7887
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Si Change Analog To Digital Converters (ADC), SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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XC7887
Si Change · Analog To Digital Converters (ADC) · SOT-23-6
XC7887 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, also serving as the ADC reference voltage; the datasheet specifies a single supply of 4 V to 5.25 V and says VDD should be kept at or above the maximum VIN input to avoid saturation at 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 | Analog signal input for the single-ended, unipolar 0 V to VDD input range. |
| 4 | SCLK | input | Serial clock input that drives the conversion sequence, with the serial interface rated up to 16 MHz; a conversion starts on the CS falling edge and the data is read out on SCLK. |
| 5 | SDO | output | Serial data output that delivers the conversion result MSB first after four leading zeros, and returns to tri-state at the 14th falling edge of SCLK to end the conversion cycle. |
| 6 | CS | input | Active-low chip select that starts a conversion on its falling edge and must be taken high after 14 SCLK cycles; it must stay high for at least 1 µs after SDO tri-states before the next 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 | Single-supply operation; the datasheet calls this the operating voltage | 1 | |
| Operating temperature range | -40 | 85 | °C | 1 | |||
| Maximum sample rate | 800 | KSPS | 1 | ||||
| Serial interface clock (SCLK) maximum | SCLK | 16 | MHz | Serial interface, up to 16 MHz SPI | 2 | ||
| Integral nonlinearity (INL) | INL | -1 | 1 | LSB | 2 | ||
| Differential nonlinearity (DNL) | DNL | -0.75 | 0.75 | LSB | 2 | ||
| Resolution | 10 | bit | 2 | ||||
| Signal-to-noise and distortion ratio (SNR) | SNR | 61.5 | dB | @100 kHz | 2 | ||
| Total harmonic distortion (THD) | THD | -74.5 | dB | @100 kHz | 2 | ||
| Low-power consumption at 5 V, 800 KSPS | 5.1 | mW | 5 V, 800 KSPS, typical | 1 | |||
| Low-power consumption at 4 V, 800 KSPS | 3.1 | mW | 4 V, 800 KSPS, typical | 1 |
CAD (KiCad official)
- Symbol:
XC7887 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
xc7887-etched.step/xc7887-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xc7887.step/xc7887.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Si Change datasheet (4 pp, sha256
ad508366ed5fe7fd, 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).
# XC7887
**Si Change** · Analog To Digital Converters (ADC) · SOT-23-6
XC7887 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, also serving as the ADC reference voltage; the datasheet specifies a single supply of 4 V to 5.25 V and says VDD should be kept at or above the maximum VIN input to avoid saturation at 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 | Analog signal input for the single-ended, unipolar 0 V to VDD input range. |
| 4 | SCLK | input | Serial clock input that drives the conversion sequence, with the serial interface rated up to 16 MHz; a conversion starts on the CS falling edge and the data is read out on SCLK. |
| 5 | SDO | output | Serial data output that delivers the conversion result MSB first after four leading zeros, and returns to tri-state at the 14th falling edge of SCLK to end the conversion cycle. |
| 6 | CS | input | Active-low chip select that starts a conversion on its falling edge and must be taken high after 14 SCLK cycles; it must stay high for at least 1 µs after SDO tri-states before the next 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 | Single-supply operation; the datasheet calls this the operating voltage | 1 |
| Operating temperature range | | -40 | | 85 | °C | | 1 |
| Maximum sample rate | | | | 800 | KSPS | | 1 |
| Serial interface clock (SCLK) maximum | SCLK | | | 16 | MHz | Serial interface, up to 16 MHz SPI | 2 |
| Integral nonlinearity (INL) | INL | -1 | | 1 | LSB | | 2 |
| Differential nonlinearity (DNL) | DNL | -0.75 | | 0.75 | LSB | | 2 |
| Resolution | | | 10 | | bit | | 2 |
| Signal-to-noise and distortion ratio (SNR) | SNR | | 61.5 | | dB | @100 kHz | 2 |
| Total harmonic distortion (THD) | THD | | -74.5 | | dB | @100 kHz | 2 |
| Low-power consumption at 5 V, 800 KSPS | | | 5.1 | | mW | 5 V, 800 KSPS, typical | 1 |
| Low-power consumption at 4 V, 800 KSPS | | | 3.1 | | mW | 4 V, 800 KSPS, typical | 1 |
## CAD (KiCad official)
- Symbol: `XC7887`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `xc7887-etched.step` / `xc7887-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `xc7887.step` / `xc7887.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/8603387349435379712) (4 pp, sha256 `ad508366ed5fe7fd`, 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/xc7887-datasheet.pdf)