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AD558,pdf datasheet (P-Compati
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2009-09-17
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The AD558 consists of four major functional blocks, fabricated
on a single monolithic chip (see Figure 2). The main D-to-A
converter section uses eight equally-weighted laser-trimmed
current sources switched into a silicon-chromium thin-film
R/2R resistor ladder network to give a direct but unbuffered 0
mV to 400 mV output range. The transistors that form the
DAC switches are PNPs; this allows direct positive-voltage logic
interface and a zero-based output range.
on a single monolithic chip (see Figure 2). The main D-to-A
converter section uses eight equally-weighted laser-trimmed
current sources switched into a silicon-chromium thin-film
R/2R resistor ladder network to give a direct but unbuffered 0
mV to 400 mV output range. The transistors that form the
DAC switches are PNPs; this allows direct positive-voltage logic
interface and a zero-based output range.
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