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DATA BRIEF

September 2004

STB6100

8PSK/QPSK direct conversion tuner IC

Rev. 1

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)

Figure 2. Integrated silicon tuner

xxxx

XO_BYP

XTALB

XOOUT

IOUT

IOUTB

QOUTB

QOUT

XTAL

VCCRF

RFIN

GND

GND

VCCMIX

GND

GND

GND

PDF

/(Ni+Nf)

BB

Gain

CP

3

2

2

5

9

1

6

2

6

2

7

2

8

2

9

3

0

3

1

1

4

1

3

1

2

1

1

1

0

1

5

1

8

7

2

3

4

5

6

24

17

21

18

19

20

23

22

LD

2-Wire Bus

BW

AGC

Control

DC Offset

Cancellation

DC Offset

Cancellation

/2 or /1

Divide

2/4

Delta

Sigma

OP

AMP