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CS1251
Main application scenarios: human impedance analysis, AC lipid measurement, heart rate measurement, etc.
CS1251 is a digital filter that includes an ADC signal chain, a body impedance measurement module (BIM), a Sigma delta ADC, and a digital filter. The ADC signal link includes input MUXP/MUXN and programmable low noise gain amplifier (PGA). The MUXP/MUXN has three internal input channels. PGA and ADC have multiple gain options, and digital filters can be configured for multiple output rates. The human body impedance measurement module uses a sinusoidal excitation source to convert the human body impedance into a voltage signal and transmits it to the ADC signal chain for measurement. It supports multi-electrode and multi-frequency human body impedance measurement.
BIM
-Supports 4-electrode measurement
-Supports 5 kHz/10 kHz/25 kHz/50 kHz/100 kHz/250 kHz multi gear frequency measurement
-Supports absolute impedance value and phase angle measurement
ADC
-- 24-bit resolution
-- Output rate 10~1280 Hz 8 steps selectable
19.5-bit effective at 2.35 V reference, 40 Hz rate, 128x gain
Self-contained LDO, output 2.35/2.45/2.8/3.0 V selectable
Supports performance, normal, low power, and sleep mode
Supports voltage measurement, BIM measurement, and manual measurement modes with single command switching
Low drift on-chip clock
Three-wire serial communication
Technical Documentation
Design and development
Tools/Software
CSWrite V3.2.4
CSWriterUx V3.2.4 is the latest burning tool software of Core Sea Technology. Support core sea 8bit MCU, 32bit MCU.
Manual download Software Download
CSU-IDE
Core sea 8-bit MCU/SOC integrated development environment 1. Integrated C compiler, assembler, linker, window 2. Support standard C language and assembly language development 3 Example code of integrated chips
Sample Application
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