Ramp generator for image sensor ADC

Details Ramp generator for image sensor ADC Ramp generator for image sensor ADC

2005-10-18

2005-10-18

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Generating sawtooth or triangular output

C327S170000, C327S538000

Reexamination Certificate

active

06956413

ABSTRACT:
A ramp generator includes a resistance ladder supplied with a constant current. Switches are closed in sequence by a shift register to provide a stepped ramp output. The constant current is controlled by referencing an on-chip bandgap voltage that is used as an input to a feedback circuit controlling current through a reference resistor ladder.

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