Analog-to-digital converter and method of fabrication

Active solid-state devices (e.g. – transistors – solid-state diode – Integrated circuit structure with electrically isolated... – Including high voltage or high power devices isolated from...

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257544, 257549, H01L 2702

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active

059947551

ABSTRACT:
An integrated circuit has a pseudosubstrate 6060 with an isolation moat 9505. Substrate 6001 has one conductivity and a subcircuit region 6060 has an opposite conductivity. Digital CMOS devices are formed in the subcircuit over region 6060 and operate between zero to +5 volts. Analog devices are formed over the rest of the substrate and operate between plus and minus 5 volts. The moat 9505 isolates the digital CMOS devices from the analog devices.

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