Input/Output circuit diagram
74
Three-phase motor driver output
Hall signal input
Splindle driver feedback filter pin
PWM driver output SLED1, 2
BTL driver input ACT1,2,3,LD
PWM driver input SLED1, 2
PWM driver input Spindle
BTL driver output FO, TK
BTL driver output LD
Spindle driver current detection input
Hall bias
FG signal output
12
10
9
15
17
16
13
11
22
20
28
28
28
28
28
24
23
21
25
32 33
38
40
27 36
37
39
49
51
53
48
48
48
50
52
54
45
2
3
3
3
45
1
19
28
43
28
5
4
46
47
3
3
50k
5pF
5k
10pP
Ω
Ω
Reference voltage input
BTHC terminal
TJ output
29
30
28
28
47k
3pF
Ω
3
40k
Ω
100
113
Ω
Ω
5k
Ω
26
28
28
47k
5pF
Ω
5k
Ω
Control signal input
34
35
28
28
50k
Ω
50k
Ω
50k
Ω
1
1
1
20
6
18
8
8
2k
Ω
12.5k
7pF
Ω
50k
Ω
18k
Ω
50k
5pF
Ω
2.5k
Ω
42
3
×
4ch
×
2ch
1k
Ω
50k
Ω
50k
Ω
50k
Ω
50k
Ω
200k
Ω
100
Ω
200
Ω
10k
Ω
47k
Ω
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