Analog/digital hybrid masterslice IC
First Claim
1. An analog/digital hybrid masterslice IC comprising:
- an analog master section in which basic blocks each having a cell formed by a bipolar device and having a MOS transistor connected to said cell are arranged in array form;
an analog section which, together with said analog master section, constitutes an analog circuit section;
a digital logic circuit section which operates under a power source voltage lower than that supplied to said analog circuit section;
a selector circuit which is disposed between said digital logic circuit section and said analog circuit section and operates for testing said analog circuit section and said digital logic circuit section independently from each other; and
a level shift circuit which amplifies a level of an output signal from said digital logic circuit section, said level shift circuit being disposed between said selector circuit and said analog circuit section and fixedly built-in in a masterwafer substrate as a hard-macro.
1 Assignment
0 Petitions
Accused Products
Abstract
An analog/digital hybrid masterslice IC includes an analog circuit section formed by a CMOS analog section and an analog master section in which a plurality of basic blocks are arranged in array form, and a digital circuit section formed by a gate array section. The digital circuit section operates under a power source voltage lower than that supplied to the analog circuit section. The IC further includes a selector circuit disposed between the digital circuit section and the analog circuit section, for testing the analog circuit section and the digital circuit section independently from each other, and a level shift circuit disposed between the selector circuit and the analog master section, for amplifying an output level from the gate array section. The level shift circuit is fixedly built-in in a masterwafer substrate as a hard-macro. The arrangement ensures that there is no possibility of any digital noise entering the analog circuit.
7 Citations
5 Claims
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1. An analog/digital hybrid masterslice IC comprising:
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an analog master section in which basic blocks each having a cell formed by a bipolar device and having a MOS transistor connected to said cell are arranged in array form; an analog section which, together with said analog master section, constitutes an analog circuit section; a digital logic circuit section which operates under a power source voltage lower than that supplied to said analog circuit section; a selector circuit which is disposed between said digital logic circuit section and said analog circuit section and operates for testing said analog circuit section and said digital logic circuit section independently from each other; and a level shift circuit which amplifies a level of an output signal from said digital logic circuit section, said level shift circuit being disposed between said selector circuit and said analog circuit section and fixedly built-in in a masterwafer substrate as a hard-macro. - View Dependent Claims (2, 3, 4, 5)
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Specification