| US 7,482,859 B2 | ||
| Automatic current trimming method & circuits | ||
| Zhao Wang, BeiJing (China); Qing Yu, Beijing (China); and David Xiao Dong Yang, Beijing (China) | ||
| Assigned to Vimicro Corporation, Beijing (China) | ||
| Filed on Jul. 09, 2007, as Appl. No. 11/775,196. | ||
| Claims priority of application No. 2006 1 0098878 (CN), filed on Jul. 17, 2006. | ||
| Prior Publication US 2008/0048766 A1, Feb. 28, 2008 | ||
| Int. Cl. G05F 1/10 (2006.01); G05F 3/02 (2006.01) | ||
| U.S. Cl. 327—538 [327/539; 327/540; 327/541; 327/542; 327/543; 323/312; 323/313; 323/314; 323/315; 323/316] | 16 Claims |
| 1. A circuit architecture comprising:
a current generator configured to generate a current;
a trimming unit configured to automatically modify the current in accordance with a reference current, wherein the trimming
unit includes an ADC to digitize a difference between the current and the reference current, a digital representation of the
difference is used subsequently to produce an accurate current by modifying the current from the current generator, wherein
the trimming unit further comprises a trimming data generator, a register and a corrective circuit; and
a circuit to drive an external component via a connector of the circuit architecture.
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