EEG Chip
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Overview |
The KS1091/KS1092 integrates a low noise amplifier, filter, internal reference and high precision low dropout linear regulator, and a reference bias circuit. The chip has low noise and high common mode interference suppression, which can accurately extract microvolt-level biomedical signals (such as EEG) with programmable amplification and filtering.
High input impedance of the KS1091/KS1092 supports signal acquisition from metal dry and fabric electrodes. The application circuits based on the KS1091/KS1092 can significantly saves the area of the PCB and the BOM cost.
With high precision, low power and high integration, the KS1091/KS1092 can be used in wearable EEG detection, brain machine interface and other weak signal acquisitions. |
| Feature |
The KS1091/KS1092 has equivalent input noise as low as 1μV, common mode noise rejection of 105dB, and the programmable gain from 360 to 2720. The built-in high precision LDO supports power input range from 1.8V to 3.6V. The KS1091/KS1092 can be used for signal acquisitions using dry or fabric electrodes. The single channel dynamic power consumption is approximately 125uA. The chip has a ±4 kV HBM ESD rating. |
| Package |
3 mm * 3 mm, 20-pin QFN package. |
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Application |
Wearable EEG: meditation/attention training, sleep monitoring, brain-computer interface, EEG equipment.
Other applications: brain control games, human-computer interactive devices, brain-controlled smart toys, high-precision microvolt signal detection. |
