IC-TW4 Datasheet, PDF (11/14 Pages) IC-Haus GmbH – PROGRAMMABLE INTERPOLATOR WITH AUTOMATIC OFFSET CORRECTION

iC-TW4 PROGRAMMABLE INTERPOLATOR
WITH AUTOMATIC OFFSET CORRECTION
Rev D1, Page 11/14
MR Sensor
pin PINZ
Input Z threshold
index window
pin A_U
pin B_V
pin Z_W
Chip internal index window.
This signal can be observed by
enabling calib2
t
setup
t
hold
Index output,
1 increment wide
Figure 6: Index gating
Calibration Mode
rect operation is guaranteed up to the maximum input
frequency as specified in electrical characteristics No.
A07.
The calibration mode is enabled by choosing the index
calibration mode of Table 9. The internal index window
can now be observed on pin B. Index gating should
be calibrated at sine/cosine input frequencies below
5 kHz to minimize the effect of latency. Timings shown
in Table 10 is valid for input frequencies below 5 kHz.
Once the timing is satisfied according to Table 10, cor-
Parameter
t_setup
t_hold
Description
Index window setup time before rising edge
of Z
Index window hold time before falling edge
of Z
Min
0.8 µs
0.8 µs
Table 10: Index gate timing