The AC823B adopts a high-performance 32-bit CPU with a 160MHz main frequency, built-in FLASH, and integrates dual-channel low-noise operational amplifiers, a programmable gain instrumentation amplifier (PGIA with 1-128x adjustable gain), a 24-bit Δ-Σ ADC (ENOB 21-bit), a 12-bit SAR ADC, a 16-bit Class D audio output (96dB SNR, driving 320mW@8Ω speaker), a DAC+OPA impedance detection waveform generator, 8 analog input channels (supporting multi-electrode switching), and supports up to 4*27 or 6*25 LCD display. It is used in four-electrode/eight-electrode body fat scales (supporting BIA bioimpedance algorithms), body composition analyzers (muscle/water/fat measurement), and medical-grade body fat monitoring devices. Package: QFN68 (7mm*7mm)