STB6100 Datasheet, PDF (1/2 Pages) STMicroelectronics – 8PSK/QPSK direct conversion tuner IC

STB6100
8PSK/QPSK direct conversion tuner IC
DATA BRIEF
DESCRIPTION
The STB6100 ASIC is a highly integrated, low-cost
direct conversion (zero IF) tuner IC for DVB-S2
broadcast satellite applications.
This device includes an LNA, down-converting
mixers, baseband low-pass filters, gain control,
on-chip VCO and a low noise PLL. Its wide gain
control range is well suited for low symbol rate
applications.
The STB6100 is controlled by a simple two wire
interface and has been designed to minimize the
external bill of materials to reduce manufacturing
costs and to simplify the board layout. The
reduced component count ensures greater system
reliability leading to increase consumer
satisfaction.
The DVB-S2 standard increases the capacity of
satellite broadcasts by as much as 30%, so
enabling the effective deployment of high data rate
applications such as high definition TV and
broadband internet.
Packaged in a small QFN 32-pin package, it is
ideal for low cost DBS design.
Figure 1. Package (420 + 36 PBGA 27 x 27)
xxxx
Figure 2. Integrated silicon tuner
3
2
GND 1
GND 2
GND 3
GND 4
3
3
2
2
2
2
1
0
9
8
7
6
OP
AMP
Delta
Sigma
LD
CP
/2 or /1 /(Ni+Nf)
Divide
2/4
PDF
DC Offset
Cancellation
2
5
24 XTAL
23 XOOUT
22 XTALB
21 XO_BYP
VCCMIX 5
VCCRF 6
GND 7
AGC
Control
RFIN 8
9
1
0
0o
90o
20 IOUT
19 IOUTB
DC Offset
Cancellation
BW 2-Wire Bus
BB
Gain
18 QOUTB
17 QOUT
1
1
1
1
1
1
1
2
3
4
5
6
September 2004
Rev. 1
1/2