AK2571 Datasheet, PDF (20/52 Pages) Asahi Kasei Microsystems – Single-Chip Automatic Power/Temperature Control for WDM Laser Diodes

AKM Confidential
AK2571
Table 4-6 Temperature levels corresponding to ADC values (Thermister: R0=10kohm@25degree,B=3450)
R_ATC_OFFSET Offset voltage Temperature [degree] (typ)
[V]
ADC=0
ADC=96
ADC=128 ADC=160 ADC=256
0
0.30
-11.3
-6.3
-4.7
-3.3
0.9
1
0.33
-9.2
-4.4
-2.9
-1.5
2.5
2
0.36
-7.1
-2.6
-1.2
0.2
4.0
3
0.39
-5.2
-0.8
0.5
1.8
5.6
4
0.42
-3.3
0.9
2.2
3.4
7.1
5
0.45
-1.5
2.5
3.7
5.0
8.5
6
0.48
0.2
4.0
5.3
6.5
10.0
7
0.51
1.8
5.6
6.8
8.0
11.4
8
0.54
3.4
7.1
8.2
9.4
12.7
9
0.57
4.9
8.5
9.7
10.8
14.1
10
0.60
6.5
10.0
11.1
12.2
15.4
11
0.63
7.9
11.4
12.5
13.6
16.8
12
0.66
9.4
12.7
13.8
14.9
18.1
13
0.69
10.8
14.1
15.2
16.3
19.4
14
0.72
12.2
15.4
16.5
17.6
20.7
15
0.75
13.5
16.8
17.8
18.9
22.0
16
0.78
14.9
18.1
19.1
20.2
23.3
17
0.81
16.2
19.4
20.4
21.5
24.6
18
0.84
17.5
20.7
21.7
22.8
25.8
19
0.87
18.9
22.0
23.0
24.1
27.1
20
0.90
20.2
23.3
24.3
25.3
28.4
21
0.93
21.5
24.6
25.6
26.6
29.7
22
0.96
22.7
25.8
26.9
27.9
31.0
23
0.99
24.0
27.1
28.1
29.2
32.3
24
1.02
25.3
28.4
29.4
30.5
33.6
25
1.05
26.6
29.7
30.7
31.8
34.9
26
1.08
27.9
31.0
32.0
33.1
36.2
27
1.11
29.1
32.3
33.3
34.4
37.5
28
1.14
30.4
33.6
34.6
35.7
38.9
29
1.16
31.7
34.9
35.9
37.0
40.3
30
1.19
33.0
36.2
37.3
38.4
41.6
31
1.22
34.3
37.5
38.6
39.7
43.0
32
1.25
35.7
38.9
40.0
41.1
44.5
33
1.28
37.0
40.3
41.4
42.5
45.9
34
1.31
38.3
41.6
42.8
43.9
47.4
35
1.34
39.7
43.0
44.2
45.4
48.9
36
1.37
41.1
44.5
45.6
46.8
50.4
37
1.40
42.5
45.9
47.1
48.3
52.0
38
1.43
43.9
47.4
48.6
49.8
53.6
39
1.46
45.3
48.9
50.1
51.4
55.3
40
1.49
46.8
50.4
51.7
53.0
57.0
41
1.52
48.3
52.0
53.3
54.6
58.8
42
1.55
49.8
53.6
55.0
56.3
60.6
43
1.58
51.4
55.3
56.7
58.1
62.4
44
1.61
53.0
57.0
58.4
59.9
64.4
45
1.64
54.6
58.8
60.2
61.7
66.4
46
1.67
56.3
60.6
62.1
63.6
68.5
47
1.70
58.0
62.4
64.0
65.6
70.7
<Rev. 0.6E Preliminary>
-20-
2001/11