LNBH24 STMicroelectronics, LNBH24 Datasheet - Page 25

• Manufacturer Part Number: LNBH24
• Description: Dual LNB supply and control IC with step-up and I2C interface
• Manufacturer: STMicroelectronics

Figure 20. Tone frequency vs. temperature
Figure 22. Tone duty cycle vs. temperature
Figure 24. Tone fall time vs. temperature
28
28
26
26
24
24
22
22
20
20
18
18
16
16
14
14
13
13
12
12
11
11
10
10
55
55
54
54
53
53
52
52
51
51
50
50
49
49
48
48
47
47
46
46
45
45
9
9
8
8
7
7
6
6
5
5
4
4
-10
-10
-10
-10
-10
-10
V
V
EN=TEN=TTX=1
EN=TEN=TTX=1
V
V
V
V
EN=TEN=TTX=1
EN=TEN=TTX=1
EN=TEN=TTX=1
EN=TEN=TTX=1
CC
CC
CC
CC
CC
CC
= 12 V, I
= 12 V, I
= 12 V, I
= 12 V, I
= 12 V, I
= 12 V, I
0
0
0
0
0
0
OUT
OUT
OUT
OUT
OUT
OUT
10
10
10
10
10
10
= 50 mA
= 50 mA
= 50 mA
= 50 mA
= 50 mA
= 50 mA
20
20
20
20
20
20
30
30
30
30
30
30
T [°C]
T [°C]
T [°C]
T [°C]
T [°C]
T [°C]
40
40
40
40
40
40
50
50
50
50
50
50
60
60
60
60
60
60
70
70
70
70
70
70
80
80
80
80
80
80
90
90
90
90
90
90
Figure 21. Tone amplitude vs. temperature
Figure 23. Tone rise time vs. temperature
Figure 25. Output backward current vs.
1000
1000
14
14
13
13
12
12
11
11
10
10
-1
-1
-2
-2
-3
-3
-4
-4
900
900
800
800
700
700
600
600
500
500
400
400
0
0
9
9
8
8
7
7
6
6
5
5
4
4
-10
-10
-10
-10
-10
-10
V
V
EN=TEN=TTX=1
EN=TEN=TTX=1
V
V
CC
CC
V
V
CC
CC
EN=TEN=TTX=1
EN=TEN=TTX=1
CC
CC
= 12 V, I
= 12 V, I
EN=0
EN=0
0
0
= 12 V, V
= 12 V, V
0
0
= 12 V, I
= 12 V, I
0
0
OUT
OUT
temperature
10
10
OUT
OUT
10
10
OBK
OBK
10
10
= 50 mA
= 50 mA
= 50 mA
= 50 mA
= 21 V externally forced
= 21 V externally forced
20
20
20
20
20
20
30
30
30
30
30
30
T [°C]
T [°C]
T [°C]
T [°C]
T [°C]
T [°C]
40
40
40
40
40
40
50
50
50
50
50
50
60
60
60
60
60
60
70
70
70
70
70
70
80
80
80
80
80
80
25/30
90
90
90
90
90
90