EEZ DIB MIO168 AFE3

Current version

r1B4

Status

Work in progress

PCB manufactured

r1B1

PCB assembled

r1B1

BOM

https://github.com/eez-open/dib-mio-afe3/tree/master/BOM

File repository

https://github.com/eez-open/dib-mio-afe3

License

TAPR v1.0

Contributions

C4.1 (Collective Code Construction Contract)

 

AFE3_r1B1.jpg

Fig. 1: AFE3 r1B1 prototype

Feature list

  • 24-bit 4-channel simultaneous sampling ADC with SPI
  • AIN#1: Hi-voltage isolated (floated) input, 2 measurement ranges (±50 V, ±480 V)
  • AIN#2: Hi-current isolated (floated) input, 2 measurement ranges (±1 A, ±10 A)
  • AIN#3: Hi-voltage input, 3 measurement ranges (±2.4 V, ±12 V, ±240 V)
  • AIN#4: Hi-current input, 3 measurement ranges (±24 mA, ±1 A, ±10 A) share common GND with AIN#3
  • Latching relays for lower continuous power consumption
  • On-board ±2.5 V low noise LDOs
  • Optional external voltage reference
  • Dimensions: 132 x 68.5 mm, 4-layer PCB

 

Fig. 2: Isolated voltage and current inputs (AIN1, AIN2)

 

Fig. 3: High voltage non-isolated input (AIN3)

 

 

Fig. 4: Voltage and high current non-isolated input (AIN4)

 

Fig. 5: 4-channel 24-bit simultaneous ADC, Low noise LDOs