Datasheet

PIC12F635/PIC16F636/639
DS41232D-page 108 © 2007 Microchip Technology Inc.
FIGURE 11-7: MODULATION DEPTH EXAMPLES
(a) Modulation Depth Definition
(b) LFDATA Output vs. Input vs. Minimum Modulation Depth Setting
B
A
A - B
A
X 100%
Modulation Depth (%) =
10 - 7
10
X 100% = 30%
Amplitude
10 mV
PP
7 mVPP
Amplitude
Modulation Depth (%) =
t
t
Demodulated LFDATA Output when MODMIN Setting = 25%
Demodulated LFDATA Output if MODMIN Setting = 50%
Input signal with modulation depth = 30%
Coil Input Strength
Amplitude
0
(LFDATA output = not toggled)
t
t
(LFDATA output = toggled)