• CCIA(Capacitively-coupled Chopper Instrumental Amplifier) core with RRL(Ripple Reduction Loop) & SS-DSL(Single-slope-assisted DC-servo Loop)

• PGA and 10b SAR ADC

• DPFL(Dual Positive Feedback Loops) for impedance boosting

• Signal generator and automatic calibration logic for external parasitics adaptation

Architecture

• Power Supply : 1.5V/1.0V

• Power Consumption : 3.83uW

• Bandwidth : 1Hz ~ 1kHz

• CMRR : 92dB

• PSRR : 100dB

• Input Referred Noise : 0.36 µV/√Hz at 300Hz BW

• Dynamic Range : 87.3dB

• Peak Input : 560mVpp

• Zin at DC : over 15GΩ

• Zin at Bandwith(50Hz) : 2GΩ

• Verified IP

  • CCIA(Capacitively-coupled Chopper Instrumental Amplifier) core with RRL & SS-DSL

  • PGA and 10b SAR ADC

  • DPFL(Dual Positive Feedback Loops) for impedance boosting

  • Signal generator and automatic calibration logic for external parasitics adaptation

Characteristics

• SNDR(Signal to Noise/Distortion Ratio) : 85.1dB at 1kHz BW

• IRN(Input Referred Noise) : 1.4 µV/√Hz at 200Hz(8.5 µV/√Hz at 10kHz)

• CMRR(Common Mode Rejection Ratio) : over 82dB

Performance - SNDR, IRN, CMRR

• Zin(Input Impedance) : over 421MΩ at DC(147MΩ at 1kHz)

Performance - ZIN

Performance - True ExG Acquisition