Method and apparatus for sensing common mode error

Details Method and apparatus for sensing common mode error Method and apparatus for sensing common mode error

1994-06-27

1995-05-30

Mis, David

Oscillators

Relaxation oscillators

331111, 331177R, 330258, H03K 3023, H03B 504, H03B 520, H03L 100

Patent

active

054205506

ABSTRACT:
Common mode errors may be sensed and corrected by receiving an output signal 105-106 and comparing the output signal 105-106 with a predetermined signal level. When the output signal 105-106 is in a first relationship with respect to the predetermined signal level a source current is provided to a integrating element 110. If, however, the output 105-106 is in a second relationship with respect to the predetermined signal level, a sink current is provided to the integrating circuit element 110. Regardless of whether a sink or source current is provided to the integrating circuit element 110, the integrating circuit element 110 generates a common mode information signal 123 which is used to correct for common mode errors.

REFERENCES:
patent: 5187448 (1993-02-01), Brooks et al.
patent: 5254956 (1993-10-01), Nishijima
patent: 5331210 (1994-07-01), McCarroll
patent: 5359294 (1994-10-01), Ganger et al.

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