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LNBH24 数据表(PDF) 9 Page - STMicroelectronics

部件名 LNBH24
功能描述  Dual LNB supply and control IC with step-up and I2C interface
PDF  30 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LNBH24 数据表(HTML) 9 Page - STMicroelectronics

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LNBH24
Pin configuration
9/30
3
Pin configuration
Figure 3.
Pin connections
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A-GND
DSQIN-B
TTX-B
DSQOUT-B
ADDR-B
NC
LX-B
P-GND-B
P-GND-A
LX-A
SDA
DETIN-B
SCL
ADDR-A
15
16
17
18
DSQOUT-A
DSQIN-A
DETIN-A
TTX-A
32
31
30
29
28
27
26
25
24
23
EXTM-B
VUP-B
VCTRL-B
VOTX-B
VORX-B
A-GND
VCC
VCC-L
BYP
VORX-A
36
VOTX-A
35
ISEL-B
NC
34
NC
33
22
21
20
19
VUP-A
ISEL-A
VCTRL-A
EXTM-A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A-GND
DSQIN-B
TTX-B
DSQOUT-B
ADDR-B
NC
LX-B
P-GND-B
P-GND-A
LX-A
SDA
DETIN-B
SCL
ADDR-A
15
16
17
18
DSQOUT-A
DSQIN-A
DETIN-A
TTX-A
32
31
30
29
28
27
26
25
24
23
EXTM-B
VUP-B
VCTRL-B
VOTX-B
VORX-B
A-GND
VCC
VCC-L
BYP
VORX-A
36
VOTX-A
35
ISEL-B
NC
34
NC
33
22
21
20
19
VUP-A
ISEL-A
VCTRL-A
EXTM-A
Table 2.
Pin description
Pin n°
(sec. A/B)
Symbol
Name
Function
29
VCC
Supply input
8 to 15 V IC DC-DC power supply.
28
VCC–L
Supply input
8 to 15 V analog power supply.
11
LX-A
N-MOS Drain
Integrated N-Channel power MOSFETs drain.
8LX-B
22
VUP-A
Step-Up voltage
Input of the linear post-regulators. The voltage on these pins is
monitored by the internal step-up controllers to keep a
minimum dropout across the linear pass transistors.
33
VUP-B
26
VoRX-A
LDO output port
Outputs of the linear post-regulators. See Table 6 for voltage
selections and description.
31
VoRX-B
25
VoTX-A
Output port during
22 kHz Tone TX
TX Outputs to the LNB. See Table 6 for selection.
32
VoTX-B
12
SDA
Serial data
Bi-directional data from / to I2C BUS.
13
SCL
Serial clock
Clock from I2C BUS.
16
DSQIN-A
DiSEqC inputs
These pins will accept the DiSEqC code from the main
microcontroller. The LNBH24 will uses this code to modulate
the internally-generated 22 kHz carrier. Set to ground if not
used.
4DSQIN-B



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