86
LC-32LE631
LC-40LE631
LC-46LE631
8.13 Diagram
DVBS supply
B08B, LNBH23Q (IC 7T50)
Figure 8-13 Internal block diagram and pin configuration
18770_306_100217.eps
100217
Block diagram
Pinning information
SDA SCL
LNBH23
ADDR
A-GND
I2C Diagnostics
I2C interface
DSQIN
Vup
VoRX
VoTX
LX
22KHz
Oscill.
PW
M
Con
tro
lle
r
Rsense
EN
VSEL
Linear Post-reg
+Modulator
+Protections
+Diagnostics
ITEST
TTX
EN
VSEL
VOUT Control
EXTM
P-GND
Preregulator
+U.V.lockout
+P.ON reset
Byp
Vcc
Vcc-
L
ISEL
TTX
TEN
DSQOUT
DETIN
22KHz Tone
Amp. Diagn.
22KHz Tone
Freq. Detector
TTX
VCTRL
SDA SCL
LNBH23
ADDR
A-GND
I2C Diagnostics
I2C interface
DSQIN
Vup
VoRX
VoTX
LX
22KHz
Oscill.
22KHz
Oscill.
PW
M
Con
tro
lle
r
Rsense
EN
VSEL
Linear Post-reg
+Modulator
+Protections
+Diagnostics
ITEST
TTX
EN
VSEL
VOUT Control
EXTM
P-GND
Preregulator
+U.V.lockout
+P.ON reset
Byp
Vcc
Vcc-
L
Byp
Vcc
Vcc-
L
ISEL
TTX
TEN
DSQOUT
DETIN
22KHz Tone
Amp. Diagn.
22KHz Tone
Freq. Detector
TTX
TTX
VCTRL
1 n.c .
2 n.c .
3 n.c .
4 LX
5 P -G N D
6 S D A
7 n.c .
8 n.c .
9 S C L
10 A D D R
11 D S Q out
12 D S Q IN
13 E XTM
14 TTX
15 B Y P
16 n.c .
17 n.c .
18 V c c -L
19 V c c
20 A -G N D
21 V oR X
22 V oTX
23 n.c .
24 n.c .
25 n.c .
26 n.c .
27 V up
28 IS E L
29 D E TIN
30 V C TR L
31 n.c .
32 n.c .
Connected with power grounds and to
the ground layer through vias
to dissipate the heat.
Epad
IC Data Sheets (continued)
