Expander Pi - Digital IO, ADC, DAC and RTC for the Raspberry Pi
Amazon.com: High-Precision AD HAT for Raspberry Pi 4B/3B+/3B/2B/Zero/W/Zero WH Jetson Nano Expansion Board with ADS1263 10-Channel 32-bit High Precision ADC 24-bit Auxiliary ADC : Electronics
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10-Bit ADC/VMS Board (HAT) for Raspberry Pi (v2.1) from BurgessWorld Custom Electronics on Tindie
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Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC - STEMMA QT / Qwiic : ID 4648 : $6.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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High-Precision ADC HAT For Raspberry Pi (10-Channel 32-Bit) | The Pi Hut
Amazon.com: Raspberry Pi HiFi DAC Pro Hat ES9038Q2M Audio Card PCM DSD Lossless High Resolution Digital-to-Analog Converter Adapter for Raspberry Pi 4 3B+ 3B Zero w Zero : Electronics
ADC Pi - ADC converter for the Raspberry Pi
Amazon.com: High-Precision AD HAT ADS1263 10-Channel 32-Bit ADC SPI Bus Low Noise Low Temperature Drift,for Raspberry Pi 4B/3B+/3B/2B/Zero/Zero W/Zero WH and Jetson Nano : Electronics
HiFi DAC HAT for Raspberry Pi — KKSB Cases
10-Bit ADC/VMS Board (HAT) for Raspberry Pi (v2.1) from BurgessWorld Custom Electronics on Tindie