The AD1555 is fabricated on a BiCMOS process with bipolar and CMOS devices being built on the same silicon. In power-down mode the IC consumes 650 W with reference applied and 250 W without it. The AD1555 outputs a ones-density bit stream proportional to the analog input signal. In many applications, for example, a designer might want to pre-distort the signal to compensate for group delay through the system. This pair of devices offer the ultimate in integrated solutions for data acquisition systems that are dependent on very high absolute resolution.
Evaluation boards are available.
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