L64777 LSI Logic Corporation, L64777 Datasheet - Page 61

• Manufacturer Part Number: L64777
• Description: DVB Qam Modulator
• Manufacturer: LSI Logic Corporation

Figure 3.2
QAM_IN
QAM_QN
QAM_I
QAM_Q
TH1
R19
1
TH
TH7
R41
1
51
TH
51
I And Q DAC Filter Diagrams
TH2
1
TH
TH8
1
F
TH
R20
F
R42
51
51
Analog Output Interface
F
F
R13
R17
R35
R39
R21
511
221
R43
221
511
221
221
F
F
5 V A
5 V A
+
1
2
3
4
R169
+
1
2
3
4
C17
10 F/16 V
U4
C42
10 F/16 V
U8
NC
IN
IN
NC
IN
IN
VS
470
C34
0.1
VS
AD8048AR
C58
0.1
AD8048AR
R36
5 V A
R14
511
+
5 V A
+
OUT
OUT
NC
NC
F
VS
F
NC
NC
F
C18
0.1
VS
F
C35
10 F/16 V
C59
10 F/16 V
C43
0.1
100
8
7
6
5
8
7
6
5
R18
R40
51
51
TH4
TH
1
TH9
TH
1
F
F
3-5