NeuroNexus · neuronexus.com · Glossary
HD Series Active-Pixel Silicon Probes (SiNAPS)
An HD Series probe is a SiNAPS CMOS [active-pixel probe](/resources/glossary/active-pixel-probe) ([Angotzi et al. (2019)](https://doi.org/10.1016/j.bios.2018.10.032)): an active pixel beneath every electrode site amplifies, filters and multiplexes on the shank, so the probe outputs a digital data stream at 256 to 1,024 sites with no headstage, at 12 bits and a fixed 20 kS/s per pixel.
Catalog designs are one shank at 256 sites, four shanks at 1,024 and eight shanks at 1,024, on 5.0 to 5.5 mm shanks 88 µm wide and 50 µm thick, with 196 µm² platinum sites on a 29 µm pitch; input-referred noise is 6.5 µV rms over 300 to 7,500 Hz. The probes record only; there is no stimulation path through an active-pixel array. They are packaged as Activus SiNAPS and acquired through the SiNAPS interface box by the SiNAPS configuration of Smartbox. The SiNAPS probe is commercialized with Corticale; the DAQ chip entry places it beside the Intan and Neuropixels chips, and Neuropixels, SiNAPS and Silicon Probes: How to Choose compares it with Neuropixels number by number.
Research use only.
Typical values
| Catalog designs | 3 |
|---|---|
| Sites | 256 to 1,024, active pixels |
| Shanks | 1 to 8 |
| Shank length | 5 to 5.5 mm |
| Site area | 196 µm² |
| Substrate | 50 µm silicon; platinum sites |
| Sampling | 12-bit, 20 kS/s per pixel, fixed |
Related Terms
Cite this term
NeuroNexus. "HD Series Active-Pixel Silicon Probes (SiNAPS)." NeuroNexus Glossary, updated 2026-10-31. https://www.neuronexus.com/resources/glossary/hd-series