STEVAL-AKI001V1 STMicroelectronics

STEVAL-AKI001V1 Data brief Evaluation board for the ADC120 8-channel, 50ksps to 1Msps, 12-bit analog to digital converter Features 12-bit ADC implementing SAR technology 50 ksps to 1 Msps conversion rate 8-to-1-channel input MUX 3.3 V operating supply SPI, serial digital output Very low power consumption RoHS compliant Description The STEVAL-AKI001V1 evaluation board allows the user to evaluate the conversion performance of the ADC120 8-channel analog-to-digital converter designed for 50 ksps to 1 Msps conversion. The board has several on-board sources like temperature sensor and strain gauge signals, and can accept external signals to allow measurement and evaluation of the ADC120 conversion performance based on its successive approximation register (SAR) with internal track-and-hold cell. The board is supplied ready-to-use in standalone mode, or it can be plugged onto a NUCLEO-L476RG board with SMT32 microcontroller, which enables further signal processing and PC communication. Product summary evaluation board for ADC120 8-Channel, STEVAL- 50ksps to 1Msps, 12-bit AKI001V1 ADC low-power, eight-channel pure CMOS 12-bit ADC ADC120 from 50ksps to 1Msps Recommended Nucleo NUCLEO- boards L476RG Power Applications Supplies and Converters DB4137 - Rev 3 - September 2020 www.st.com For further information contact your local STMicroelectronics sales office.STEVAL-AKI001V1 Schematic diagrams DB4137 - Rev 3 page 2/8 1 Schematic diagrams Figure 1. STEVAL-AKI001V1 schematic diagram - functional blocks 5V NUCLEO U Power Supply SPI interface (compatible with Aardvark connetor) DVCC J3 DVCC SPI interface 5V NUCLEO AVCC GND 3.3V NUCLEO AVCC SPI MISO U Temperature sensors for ADC SPI SCLK SPI MOSI SPI SS AVCC GND U Plus minus 5V input to ADC ADC 0 C2 C3 10nF 10nF AVCC V REF V REF ADC 1 U Strain gauge to ADC GND GND 5V NUCLEO J1B AVCC 1 2 J1A 3 4 1 2 5 6 3 4 Strain gauge ref ADC 2 7 8 5 E5V 9 10 7 GND 11 12 IN3 ADC 3 9 10 13 14 J2 1 SPI SS 11 12 U Standard ADC inputs /CS 15 16 GND Input Signal 13 14 17 18 15 16 19 20 4 AVCC IN0 17 18 21 22 5 IC1 19 20 Strain gauge ref IN1 23 24 16 21 22 25 26 6 SCLK GND V REF IN2 ADC120 23 24 27 28 7 25 26 IN3 29 30 27 28 31 32 8 15 IN4 ADC 4 IN4 DOUT 29 30 J4 33 34 9 GND 31 32 IN5 ADC 5 IN5 35 36 14 33 34 37 38 10 DIN IN6 ADC 6 IN6 35 36 11 NUCLEO - CN10 37 38 IN7 ADC 7 IN7 NUCLEO - CN10 GND GND SPI SCLK SPI MISO GND SPI MOSI Figure 2. STEVAL-AKI001V1 schematic diagram - power supply 3V3 AVCC IC11 5V NUCLEO LDK220M 1 5 IN OUT JP4 C14 C16 3.3V D Generate 1F 1F JP5 DVCC Generate 3 4 EN ADJ/NC GND DVCC GND GND GND 3.3V NUCLEO C17 C18 1F 0.1F GND Left morpho connector 2 GND 3 2 AGND AVCC 12 13 DGND DVCC Right morpho connector