Electronic component value trimming systems

Details Electronic component value trimming systems Electronic component value trimming systems

2006-07-25

2006-07-25

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Converter calibration or testing

Trimming control circuits

C326S030000, C326S082000, C326S086000, C326S090000

Reexamination Certificate

active

07081842

ABSTRACT:
Described is a system for trimming the value of an electronic component. The system comprises: at least one trimming component, each trimming component having an associated switch for selectively connecting that trimming component to the electronic component in response to a corresponding bit in a control vector. A comparator is included for generating an output bit having a first value if a net value of the electronic component and any connected trimming components differs from a desired value. A controller connected to the switches and the comparator generates the control vector in dependence on the output of comparator, the controller comprising a shift register for sequentially receiving successive output bits from the comparator; wherein the control vector comprises the contents of the shift register and wherein a bit of said first value in control vector effects switching of the corresponding switch.

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