The Sigma-Delta modulator is a type of analog-to-digital converter that utilizes a delta-sigma modulation technique to convert an analog signal into a digital signal. This device has a 12-bit resolution and communicates with microcontrollers or other devices through an SPI (Serial Peripheral Interface) connection, which supports up to 8 bits of data transmission per clock cycle. The modulator is housed in a DIP (Dual In-Line Package) type casing, characterized by its gull-wing leads that allow for easy mounting on a printed circuit board.