Circuit and method of previewing analog trimming

Details Circuit and method of previewing analog trimming Circuit and method of previewing analog trimming

1993-12-03

1994-11-01

Wambach, Margaret Rose

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327525, 327312, H03K 301, H03B 104

Patent

active

053610016

ABSTRACT:
An analog trim circuit enables and disables one or more serially connected passive elements for setting characteristics of the circuit. Each passive element has a transistor across its first and second conduction terminals operating in response to a control signal from a control circuit for enabling and disabling conduction through the associated passive element. The control circuits are responsive to a data signal for providing the control signals that enable and disable the conduction through the passive elements. The data signal allows a preview of the trimming results. The fuse in certain ones of the control circuits are blown to set the control signals to fixed values after removal of the data signal.

REFERENCES:
patent: 4158786 (1979-06-01), Hirasawa
patent: 4446534 (1984-05-01), Smith

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