Data carrier comprising an integrated circuit with an ESD...

Details Data carrier comprising an integrated circuit with an ESD... Data carrier comprising an integrated circuit with an ESD...

2003-05-16

2008-12-02

Sherry, Michael J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

C361S111000, C361S118000

Reexamination Certificate

active

07460345

ABSTRACT:
In the case of a data carrier (1) or an integrated circuit (5) for the data carrier (1), an ESD protection circuit (8) is formed by means of a series connection (9) comprising a first protection diode (10) and a protection stage (11) together with a second protection diode connected in parallel with the series connection (9), and a rectifier circuit (13) connected with the ESD protection circuit (8) is provided, which comprises a rectifier diode connected in parallel with the ESD protection circuit (8), wherein the rectifier diode takes the form of a Schottky diode (21) with a parasitic p
junction (26) and wherein the Schottky diode (21) with the parasitic p
junction (26) forms the second protection diode of the ESD protection circuit (8).

REFERENCES:
patent: 5493133 (1996-02-01), Duvvury et al.
patent: 5550728 (1996-08-01), Ellis
patent: 5770886 (1998-06-01), Rao et al.
patent: 6570490 (2003-05-01), Saitoh et al.
patent: 6593597 (2003-07-01), Sheu

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