TLE4941-2, TLE4941-2C Supplement

TLE4941-2 - TLE4941-2C

February 2002

Datasheet supplement

3

Transition to calibrated mode:

In the calibrated mode the output will switch at zero-crossing of the input signal. The

phase shift between input and output signal is no longer determined by the ratio

between digital noise constant and signal amplitude. Therefore a sudden change in

the phase shift may occur during the transition from uncalibrated to calibrated mode.

Calibrated mode:

See TLE4941 data sheet.

Additional notes:

Unlike the TLE 4941 the first output edge might occur before the first zero-crossing of

the magnetic input signal. Therefore the maximum number of edges until the

calibrated mode is active is increased by one for TLE4941-2. However, referring to

the input signal the delay between star-up of the signal and first calibrated output

signal is identical with TLE4941.

Typically the phase error due to PGA-transition (row 7 to 15) reduces the error

caused by switching the mode from uncalibrated to calibrated.

The summed up change in phase error from the first output edge issued to the output

edges in calibrated mode will not exceed +/- 90°.