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DAC1242

Part Number	DAC1242
Manufacturer	National Semiconductor
Description	Process Control DAC
Published	Oct 8, 2017
Detailed Description	('t) ~ ~National -c~ ~ Semiconductor ~ N o~ DAC1242/DAC1243 Process Control DACs c
Datasheet	DAC1242 PDF File

Overview

('t) ~ ~National -c~ ~ Semiconductor ~ N o~ DAC1242/DAC1243 Process Control DACs c The DAC1242 is a current-sinking device, while the DAC1243 provides true current sourcing into a ground referenced load.
The digital input registers are similar to an INS8255, allowing direct TTL interfacing to a variety of 8-bit microprocessors (8080, 8085, 8048, 8070, 8073, NSC800, Z80, et al).
Interfacing to other microprocessor families or larger computers requires only 1 or 2 TTL packages.
The device occupies 4 contiguous bytes of I/O or address space.
The converters produce a 4-20mA output current proportional to the digital input word with 12-bit resolution, guaranteed monotonicity, and <1/2 LSB non- linearity; a 10-bit guaranteed part is also available.
Null and span are internally calibrated to allow use of an external 100Q, 1% current-sensing resistor wit...

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