I was delighted when reader and DI contributor Jim Brannan proposed writing up his base-3 DAC design. Like Charlieplexing, his idea makes use of tristate outputs to wring more information from a pin ...

Leveraging the company’s LTC1668 50-Msample/s, 16-bit DAC, the DC2459A demonstration circuit from Linear Technology accepts digital signals from one of several FPGA development boards. Example FPGA ...