DPS7040 VLSI RF Tuner for
Terrestrial and Cable TV Applications
O
O VV EE RR VV II EE W
W
The DPS7040 is a highly versatile, high performance, single-chip RF tuner
integrated circuit (IC). It is capable of receiving input signals in the TV band
(48~870 MHz) and translating them down to an intermediate frequency in the
30 to 60 MHz range. This VLSI product integrates all the essential components
of an RF receiver, including the LNA, RFAGC, mixers, filters, oscillators, PLL's,
and IF variable gain amplifier, thereby requiring minimal external components
and eliminating manual tuning. This high level of on-chip functionality translates
to a reduction in the overall bill of materials, assembly, alignment and test
costs. The high level of integration provides a dramatic reduction in the
footprint occupied by the RF tuner, thereby enabling multi-tuner/multi-stream
systems in small form-factor.
The DPS7040 features a proprietary receiver architecture, which eliminates
the need for an external 1st IF filter. The IC is specifically designed to meet the
rigorous distortion demands of the CATV environment, at the same time having
excellent sensitivity for terrestrial applications, while drawing minimal supply
current. The IC is programable via a standard 2 wire interface. To enable mult-
tuner architectures the Slave address may be programmed via an external
resistor. The synthesizer and oscillator sections have been designed to exhibit
extremely good close-in phase noise, making the DPS7040 the ideal choice
where there is a requirement to support digital TV standards.
The DPS7040 directly supports many common digital TV, analog TV and
data standards, with appropriate choice of demodulator. Due to the inclusion
of the IF variable gain amplifier, the output of the DPS7040 can be directly
connected to the input of most demodulators with no external active components.
A
A PP PP LL II CC AA TT II OO NN SS
· Terrestrial and cable TV
· Digital and hybrid STB
· TV receivers (plasma, LCD)
· Cable modems
· PCTV solutions
M
M OO DD UU LL AA TT II OO NN FF OO RR M
M AA TT SS
· QAM (64/256)
· ATSC (8VSB)
· NTSC/PAL/SECAM
· COFDM
F
F EE AA TT UU RR EE SS
· VLSI RF tuner IC
· 256 QAM/8VSB compatible
· 8 dB noise figure
· Superior close in phase noise
· 0-65°C operation
· Fast channel select and lock
· Very small form factor solution: 64 QFN
· Integrates:
- LNA
- RF filtering
- Gain control (RF and IF)
- Wide dynamic range AGC
- Programmable dual synthesizers
- Mixers
- On-chip oscillator tuning elements
- IF variable gain amplifier
· Minimal External Components:
- No manual tuning
- No varactors
- No 30V power supply
- No RF SAW filter
DPS7040 VLSI RF Tuner for Terrestrial and Cable TV Applications
For more information please call:
LSI Logic Corporation
Headquarters
1621 Barber Lane
Milpitas, CA 95035
Tel: 866.574.5741
(within U.S. and Canada)
1.408.954.3108
(outside U.S. and Canada)
Technical Support: 800.633.4545
Corporate Website
www.lsilogic.com
Sales Office Locations
www.lsilogic.com/contacts
LSI Logic and the LSI Logic logo are trademarks or
registered trademarks of LSI Logic Corporation. All other
brand and product names may be trademarks of their
respective companies.
LSI Logic Corporation reserves the right to make changes
to any products and services herein at any time without
notice. LSI Logic does not assume any responsibility or
liability arising out of the application or use of any product
or service described herein, except as expressly agreed to in
writing by LSI Logic; nor does the purchase, lease, or use of
a product or service from LSI Logic convey a license under
any patent rights, copyrights, trademark rights, or any other
of the intellectual property rights of LSI Logic or of third
parties.
Copyright ©2004 by LSI Logic Corporation.
All rights reserved.
Order No. I20117
0704.LR.Web - Printed in USA
DPS7040 VLSI RF Tuner
Down-Conversion Block
RFINP
RFINN
RFAGC
SDATA
SCL
ADDR
SEL
Serial
Control
Port
SAW
IFFILP
IFFILN IFFNN
IFINP
LNA
+
AGC
IF
GCA
IFOUTP
IFOUTN
IFAGC
L01 PLL
L02 PLL
L02
L01
CP1
CP2
CN1
CN2
XTAL/FREF
32 MHz
Figure 1. Functional Block Diagram.
S
Sppeecciiffiiccaattiioonnss DDPPSS77004400
M
Miinniim
muum
m
T
Tyyppiiccaall
M
Maaxxiim
muum
m
U
Unniitt
R
RFF IInnppuutt
Range of Operation
48
870
MHz
Return Loss
6
dB
RF AGC gain range
30
35
dB
RF Voltage Gain
45
dB
Noise Figure
8
dB
I
IFF OOuuttppuutt
Impedance
1K balanced
Ohms nominal
Signal level
1
Volt peak-to- peak
Range of Operation
30
60
MHz
G
Geenneerraall
Composite Phase Noise:
dBc/Hz
@ 1KHz
-82
@ 10 KHz
-82
@ 100kHz offsets
-103
CTB, Measured with 138
-53
dBc
CW Input signals, each at
+15dBmV with RFAGC set
to 15dB gain reduction
P
Phhyyssiiccaall
Supply
3.13 3.3
3.46
Volts
voltage
4.75
5.0
5.25
3.3V Current consumption
315
mA
5V Current consumption
50
mA
Reference Crystal frequency
32
MHz
Package
64 QFN
Temperature of Operation
0
65
o Celsius
PDF 
ZIP