Philips 32PFS5709/12 Service Manual page 70

EN 70 7. TPM14.2E LA
+12V
5VSB
P12V
P12V
7.4 Front-End Analogue and DVB-T, DVB-C,
ISDB-T reception
7.4.1 Front-END Analogue part
The Front-End for Analogue tuner consist of the following key
components:
• TUNER - TDSY - G380D (DVB-T/C, T2 analogue)
• TUNER - SUT-RE231ZN (DVB-T/C, T2 analogue)
• SCALER MT5591IVDJ HSBGA-758 TV Processor
Below find a block diagram of the front-end application for the
front-end application for analogue part.
TDSY-G380D
I 2 C
IF_AGC
RF_AGC
Figure 7-6 Front-End Analogue block diagram
2014-Sep-26
Circuit Descriptions
Q754
Q752
U708
3V3SB
U703
5V_USB
U102
Q702
5V_USB
5V_SW
U701
5V_SW
U709
5V_SW
U705
FB754
FB755
Q750
Figure 7-5 DC/DC converters
I 2 C
IF
IF_AGC
MT5591
19610_204.eps
12V Audio
12V_AL
5V-STB
MTK5591
U4251
WIFI-VCC
CI-VCC
USB
AVDD3V3
MTK5591
3.3V
Tuner
SUT-RE231ZN
RF_AGC
Figure 7-7 Front-End Analogue block diagram[1]
7.4.2 DVB-T2 DTV part
The Front-End for DVB-T2 DTV consist of the following key
components:
• TUNER - TDSY - G380D(DVB-T/C, T2 analogue)
• TUNER - SUT-RE231ZN (DVB-T/C, T2 analogue)
• SCALER MT5591IVDJ HSBGA-758 TV Processor
• DEMODULATOR CXD2842ER-T4 VQFN-48
Below find a block diagram of the front-end application for
DVB-T2 DTV.
back to
div. table
1.5V
DDR
U707
DV1.2
U405 Demond IC
EMMC
Flash IC
PVDD
AMP STA381BWTR
PANEL_VCC
2
I C
2
I C
IF
IF_AGC
IF_AGC
19610_203.eps
MT5591
19617_201.eps