lnbh221 STMicroelectronics, lnbh221 Datasheet - Page 6

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

Pin configuration
Table 3.
6/27
DSQOUT DiSEqC Output
Symbol
EXTM
ADDR
V
GND
GND
BYP
O
TX
External Modulation
Ground
Bypass Capacitor pin Needed for internal pre regulator filtering.
Output Port during
22KHz Tone TX
Ground
Address Setting
Pin description
Name
Open drain output of the Tone Detector to the main µcontroller for
DiSEqC data decoding. It is LOW when tone is detected on the
DETIN.
External Modulation Input. Needs DC decoupling to the AC
source. If not used, can be left open.
Circuit Ground. It is internally connected to the die frame for heat
dissipation.
Output of the linear post regulator/modulator to the LNB. See
truth table for voltage selections.
To be connected to ground.
Four I
level voltage.
2
C bus addresses available by setting the Address Pin
Function
PIN Number
1, 14,
18,
19,
32,
31
36
34
30
29
33
A
5
LNBH221
Sect:
1, 14,
18,
19,
32,
23
13
36
16
12
15
11
B