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Documents DAC161S997
SNAS621A – JUNE 2013 – REVISED DECEMBER 2014 DAC161S997 16-Bit SPI-Programmable DAC for 4-20 mA Loops
1 Features 3 Description The DAC161S997 is a very low power 16-bit ОЈО”
digital-to-analog converter (DAC) for transmitting an
analog output current over an industry standard 4-20
mA current loop. The DAC161S997 has a simple 4wire SPI for data transfer and configuration of the
DAC functions. To reduce power and component
count in compact loop-powered applications, the
DAC161S997 contains an internal ultra-low power
voltage reference and an internal oscillator. The low
power consumption of the DAC161S997 results in
additional current being available for the remaining
portion of the system. The loop drive of the
DAC161S997 interfaces to a Highway Addressable
Remote Transducer (HART) modulator, allowing
injection of FSK modulated digital data into the 4-20
mA current loop. This combination of specifications
and features makes the DAC161S997 ideal for 2-and …
