HOW DOES IT WORK?

DAC 15 Click is based on the DAC80502, a dual 16-bit 1-LSB INL voltage-output DAC from Texas Instruments. Each device output consists of a rail-to-rail ladder architecture with an output buffer amplifier. The DAC generates rail-to-rail voltages on the output, giving a maximum output range of 0V to a VDD, which depends on a selected voltage on the VCC SEL jumper. The DAC80502 incorporates a power-on-reset circuit that ensures the DAC output powers up at zero scale or midscale based on the RST pin status and remains at that scale until a valid code is written to the device.

DAC 15 Click allows the use of both I2C and SPI interfaces to communicate with the host MCU. The I2C interface supports standard, fast, and fast-node plus (1Mbps), whereas while using the last one at 1MHz, the clock update rate is limited to 55.55kSPS. The 3-Wire SPI serial interface operates up to 50kHz and is compatible with SPI, QSPI, and Microwave interface standards. The communication interface can be selected over COMM SEL jumpers. All four jumpers must be set for the board to work properly (SPI is set by default). If you select the I2C interface, you can also select the I2C address over the ADDR SEL jumper, where 0 is set by default.

This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. Also, this Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used as a reference for further development.

SPECIFICATIONS