LNBH23L STMicroelectronics, LNBH23L Datasheet - Page 11

• Manufacturer Part Number: LNBH23L
• Description: LNB supply and control IC with step-up and I2C interface
• Manufacturer: STMicroelectronics

LNBH23L
5
Figure 3.
Figure 4.
Vin
Vin
12V
12V
Vin
Vin
12V
12V
Typical application circuit
DiSEqC 1.x using internal 22 kHz tone generator
DiSEqC 1.x using internal 22 kHz tone generator and "optional" PDC circuit
C1
C1
C1
C1
Tone Enable control
Tone Enable control
Tone Enable control
Tone Enable control
Tone Enable control
Tone Enable control
L1
L1
C4
C4
C4
470nF
470nF
470nF
L1
L1
TTL
TTL
TTL
C4
C4
C4
470nF
470nF
470nF
TTL
TTL
TTL
D1
D1
D1
D1
D1
D1
C3
C3
C3
C3
C3
C3
C3
C3
C8
C8
C8
220nF
220nF
220nF
C8
C8
C8
220nF
220nF
220nF
I
I
I
I
2
2
2
2
C Bus
C Bus
C Bus
C Bus
C6
C6
470nF
470nF
C6
C6
470nF
470nF
{
{
{
{
Doc ID 15335 Rev 4
Vup
Vup
LX
LX
DSQIN
DSQIN
Vup
Vup
DSQIN
DSQIN
Vcc
Vcc
SCL
SCL
ADDR
ADDR
LX
LX
Vcc
Vcc
ADDR
ADDR
Vcc-L
Vcc-L
SDA
SDA
SDA
SDA
SCL
SCL
Vcc-L
Vcc-L
P-GND
P-GND
P-GND
P-GND
P-GND
P-GND
LNBH23L
LNBH23L
LNBH23L
LNBH23L
D3
D3
D3
D3
D3
D3
A-GND
A-GND
A-GND
A-GND
A-GND
A-GND
VoRX
VoRX
VoRX
VoRX
EXTM
EXTM
EXTM
EXTM
VoTX
VoTX
VoTX
VoTX
ISEL
ISEL
ISEL
ISEL
Byp
Byp
Byp
PDC
PDC
Byp
Byp
Byp
PDC
PDC
TTX
TTX
TTX
TTX
C10
C10
C10
220nF
220nF
220nF
C10
C10
C10
220nF
220nF
220nF
*R5
*R5
2.2K Ohm
2.2K Ohm
1.5KOhm
1.5KOhm
1.5KOhm
1.5KOhm
1.5KOhm
1.5KOhm
C11
C11
C11
C11
220nF
220nF
220nF
220nF
C11
C11
C11
C11
220nF
220nF
220nF
220nF
R9
R9
R9
R9
R9
R9
C15
C15
47nF
47nF
C15
C15
47nF
47nF
3.3V
3.3V
Typical application circuit
Diode
Diode
1N4148
1N4148
R2 (RSEL)
R2 (RSEL)
R2 (RSEL)
15kOhm
15kOhm
15kOhm
R2 (RSEL)
R2 (RSEL)
R2 (RSEL)
15kOhm
15kOhm
15kOhm
*C14
*C14
D2
D2
D2
1nF
1nF
D2
D2
D2
(*) OPTIONAL components.
(*) OPTIONAL components.
To be used only in case
To be used only in case
of heavy capacitive load
of heavy capacitive load
to LNB
to LNB
500mA max
500mA max
to LNB
to LNB
500mA max
500mA max
*TR1
*TR1
*R8
*R8
*R7
*R7
150 Ohm
150 Ohm
22 Ohm
22 Ohm
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