TDA10085 Philips Semiconductors, TDA10085 Datasheet - Page 11

• Manufacturer Part Number: TDA10085
• Description: Single chip DVB-S/DSS channel receiver
• Manufacturer: Philips Semiconductors

Philips Semiconductors
10 APPLICATION INFORMATION
2001 Aug 31
handbook, full pagewidth
handbook, full pagewidth
Single chip DVB-S/DSS channel receiver
The TDA10085 can receive a 4 MHz clock signal delivered by the PLL synthesizer, or can generate the sampling clock from a crystal connected
between XIN and XOUT.
Bypass capacitors (0.1 F) should be placed close to ADC voltage references VREFP and VREFN.
from
LNB
90 PHASE
LNB
MIXER
MIXER
SHIFT
TUNER
Fig.4 Typical use of CTRL1 and 22K outputs.
channel Q
channel I
LO
Fig.3 Front-end receiver schematic.
PLL
VIN1
VIN2
15
12
28
30
VAGC
SDA-0
GENERATION
LNB SUPPLY
11
GND
TDA10085
21
29
VREFN
VREFP
SCL-0
CTRL1
VIN1
VIN2
15
14
13
12
28
30
32
SDA-0
VAGC
SDA
63
51-54
59-62
TDA10085HT
22K
33
29
1
SCL
SCL-0
XIN
MPEG2
32
8
SDA
2
51-54
59-62
XOUT
transport
33
DO[7-0]
50
49
48
47
stream
MGU429
SCL
8
TDA10085HT
MGU428
Product specification
PSYNC
DO[7-0]
UNCOR
OCLK
DEN