Datasheet

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  
SLIS110A − APRIL 2003 − REVISED MAY 2005
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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−
+
−
Knock Sensor 2
Knock Sensor 1
C
C
R1
R1
R2
R2
CH2FB
CH1FB
CH2N
CH2P
CH1P
CH1N
V
ref
NOTE: The series capacitor C is not mandatory and may be removed in some application circuits.
Figure 2. Input Signal Configuration
Table 1. Integrator Programming
DECIMAL
VALUE (D4…D0)
INTEGRATOR TIME
CONSTANT
(µSEC)
BAND-PASS
FREQUENCY
(kHz)
GAIN
DECIMAL VALUE
(D5…D0)
BAND-PASS
FREQUENCY
(kHz)
GAIN
0 40 1.22 2 32 4.95 0.421
1 45 1.26 1.882 33 5.12 0.4
2 50 1.31 1.778 34 5.29 0.381
3 55 1.35 1.684 35 5.48 0.364
4 60 1.4 1.6 36 5.68 0.348
5 65 1.45 1.523 37 5.9 0.333
6 70 1.51 1.455 38 6.12 0.32
7 75 1.57 1.391 39 6.37 0.308
8 80 1.63 1.333 40 6.64 0.296
9 90 1.71 1.28 41 6.94 0.286
10 100 1.78 1.231 42 7.27 0.276
11 110 1.87 1.185 43 7.63 0.267
12 120 1.96 1.143 44 8.02 0.258
13 130 2.07 1.063 45 8.46 0.25
14 140 2.18 1 46 8.95 0.236
15 150 2.31 0.944 47 9.5 0.222
16 160 2.46 0.895 48 10.12 0.211
17 180 2.54 0.85 49 10.46 0.2
18 200 2.62 0.81 50 10.83 0.19
19 220 2.71 0.773 51 11.22 0.182
20 240 2.81 0.739 52 11.65 0.174
21 260 2.92 0.708 53 12.1 0.167
22 280 3.03 0.68 54 12.6 0.16
23 300 3.15 0.654 55 13.14 0.154