lnbh221 STMicroelectronics, lnbh221 Datasheet - Page 8

• Manufacturer Part Number: lnbh221
• Description: Dual Lnb Supply And Control Ic With Step-up Converter And I2c Interface
• Manufacturer: STMicroelectronics

Typical application circuits for each section: A and B
Figure 4.
8/27
12V
12V
Vin
Vin
L1=22µH
L1=22µH
IC2
IC2
IC2
F1
F1
F1
MURATA BL01RN1-A62
MURATA BL01RN1-A62
MURATA BL01RN1-A62
Panasonic EXCELS A35
Panasonic EXCELS A35
Panasonic EXCELS A35
Axial Ferrite Bead Filter
Axial Ferrite Bead Filter
Axial Ferrite Bead Filter
Application Circuit For Bi-directional Diseqc 2.0 And Output Current Up To 500mA
1. C8, D3 and D4 are needed to protect the output pins from any negative voltage spikes during high speed
2. (*): R-L filter to be used according to EUTELSAT recommendation to implement the DiSEqC
3. (**) Do not leave these pins floating if not used.
4. (***) To be soldered as close as possible to relative pins
suggested part number:
suggested part number:
suggested part number:
C9
C9
C9
220µF
220µF
220µF
22KHz Tone Enable
22KHz Tone Enable
STS4DNFS30L
STS4DNFS30L
STS4DNFS30L
voltage transitions.
DiSEqC
both with C8 and D4.
Rsc
Rsc
0.1 Ω Ω Ω Ω
0.1 Ω Ω Ω Ω
C1
C1
220µF
220µF
TM
F1
F1
220µF
220µF
implementation on page 8). If bidirectional DiSEqC
C2
C2
C4(***)
C4(***)
470nF
470nF
Ceramic
Ceramic
C3(***)
C3(***)
470nF
470nF
Ceramic
Ceramic
IC1
IC1
SDA
SDA
DSQIN (**)
DSQIN (**)
Vup
Vup
Gate
Gate
Sense
Sense
Vcc
Vcc
SCL
SCL
Section A and B
Section A and B
LNBH221
LNBH221
D2 1N4001
D2 1N4001
GND
GND
ADDRESS
ADDRESS
(**) DETIN
(**) DETIN
DSQOUT
DSQOUT
VoRX
VoRX
EXTM
EXTM
VoTX
VoTX
Byp
Byp
TM
C7(***)
C7(***)
100nF
100nF
C8(***)
C8(***)
100nF
100nF
2.0 is not implemented it can be removed
C5
C5
470nF
470nF
C6
C6
10nF
10nF
D3(***)
D3(***)
BAT43
BAT43
0<V
0<V
0<V
D4(***)
D4(***)
BAT43
BAT43
(*) see note
(*) see note
ADDR
ADDR
ADDR
15 ohm
15 ohm
270µH
270µH
<V
<V
<V
BYP
BYP
BYP
TM
2.0, (see
LNBH221
to LNB
to LNB