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PDF DPS7040 Data sheet ( Hoja de datos )
| Número de pieza | DPS7040 | |
| Descripción | VLSI RF Tuner | |
| Fabricantes | LSI Logic | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de DPS7040 (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
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DPS7040 VLSI RF Tuner for
Terrestrial and Cable TV Applications
www.DataSheet4U.com
OVERVIEW
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.
APPLICATIONS
• Terrestrial and cable TV
• Digital and hybrid STB
• TV receivers (plasma, LCD)
• Cable modems
• PCTV solutions
MODULATION FORMATS
• QAM (64/256)
• ATSC (8VSB)
• NTSC/PAL/SECAM
• COFDM
FEATURES
• 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
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet DPS7040.PDF ] | |
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