Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Patent
1998-08-31
2000-11-14
Nuton, My-Trang
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
H03L 500
Patent
active
061475408
ABSTRACT:
A high performance high input voltage input buffer manufacture using a low voltage process contains an input buffer circuit (136) and a level shifter (132). The input buffer (136) will receive an input signal via a chip pad (112). The input signal from trip pad (112) will be provided to an inverter stack (135) that contains or is coupled to protection transistors (116, 114, 110, and 111). The protection transistors are biased by a reference generator (134) which outputs a voltage that is a function of the maximal voltage that can be provided on the chip pad (112). By using the circuit (134), the trigger point of the inverter stack (135) can be dynamically adjusted for any OVDD (110) value whereby input buffer performance is improved and made more flexible.
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Motorola Inc.
Nuton My-Trang
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