Amphenol DS2129

the ds2129 is a triple-output voltage regulator for 27-line, low-voltage-differential (lvd) scsi termination for spi-2 and spi-3 applications using lvd termination networks. the device provides reference voltages and bias currents for lvd-termination resistor pi (p) networks. with a pi network (475?, 121?, 475?), the ds2129 meets the common-mode bias, differential bias, and termination-impedance requirements of spi-2 (ultra2) and spi-3 (ultra3). the device also provides a 1.3v output for diffsense signaling, and includes protection features such as thermal shutdown and active current limiting.