EMBEDDED TOOLKIT
SYSTEMS R&D // DEV_TOOLS SUITE
Tools (65)
analog front end ulp profiler
SYSTEM ONLINE
Analog Front-End (AFE) & ULP Profiler
R&D Grade analog electronics and power. Design anti-aliasing filters with charging analysis of hardware capacitance of ADC converters in microcontrollers (protects against sampling errors without Op-Amp buffer). Also simulate power profiles (Sleep/TX) and consider battery degradation at current peaks caused by internal resistance (ESR).
External Sensor Circuit
Internal MCU Structure (ADC)
Signal Analysis (Result)
Filter Cutoff Frequency (-3dB)
144.69 Hz
Thermal Noise (Johnson): 0.16 µV RMS (LSB = 805.7 µV)
C_adc Charging Analysis
t_track = 6.60 µs min.
⚠️ DESIGN ERROR: Your configured sampling time in MCU (1.50 µs) is too short to fully charge the ADC capacitor through the high output impedance of the sensor (10000 Ohm)!
Solution: Increase sampling cycles in ADC registers, decrease ADC clock frequency, or add an op-amp buffer (Voltage follower).
Solution: Increase sampling cycles in ADC registers, decrease ADC clock frequency, or add an op-amp buffer (Voltage follower).