The ADK-1590 Evaluation Board demonstrates features of the HI-1590 MIL-STD-1553B dual transceiver with variable transmit amplitude, which can be digitally adjusted from 0 to 26 Vp-p through an SPI interface. Adjustment can also be made with a 0 to 3.3VDC analog control signal via a potentiometer. Amplitude controls for both buses are ganged together. In SPI mode, a low range option allows for more accurate amplitude adjustment from 0 to 4.9 Vp-p. The board runs from a single 3.3V ±5% supply voltage.
A MIL-STD-1553B protocol message generator and receiver are included on the board to demonstrate the HI-1590 features. The EVM (Evaluation Module) includes a microcontroller that generates the SPI messages; the interface is through a terminal emulator connected to a PC through the USB interface.