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參數(shù)資料
| 型號： | TDA10045 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | DVB-T channel receiver |
| 中文描述： | DVB - T通道接收器 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大小： | 94K |
| 代理商： | TDA10045 |
2001 Nov 08
13
Philips Semiconductors
Product specification
DVB-T channel receiver
TDA10045H
Tuner
A RF tracking filter tracks the RF wanted frequency and
suppresses the image
A first local wideband AGC is usually done at RF level,
the AGC level information could be provided externally
and the chip offers facilities to measure this level by the
optional ADC (this measurement is automatically made
by the DSP, the host has just to read the result)
AmixeroscillatorandaPLLdownconvertstheRFsignal
to intermediate frequency IF1 (36.125 MHz typ.)
SAWfilterseliminatethepoweroftheadjacentchannels
around IF1.
IF interface
It is either an analog IF amplifier when IF1 is sampled
(direct IF: digital downconversion concept) or an analog
IF amplifier followed by a downconversion from IF1 to
IF2 at a few MHz (e.g. 4.57 MHz)
When this second solution is used, the ADC sampling
clock could be used (after low-pass filtering) as a
reference clock for downconversion (twice the ADC
sampling clock could also be provided)
The IF amplifier is controlled by the digital AGC of the
chip. A simple RC circuit filters the single bit
(
Σ
modulated) AGC control (VAGC)
The sampling clock could also be used to control an
external ADC, the inputs to the chip will then be digital
(FI[9:0]).
TDA10045H
The chip is controlled by an I
2
C-bus and driven by an
external low-cost crystal oscillator
The software of the embedded DSP can be downloaded
from the main I
2
C-bus or from a dedicated I
2
C-bus
connected to an external slave I
2
C-bus EEPROM
An internal bidirectional switch enables the tuner to be
programmed through the chip and then switch-off the
link in order to avoid phase noise distortions due to
I
2
C-bus traffic.
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PDF描述 |
|---|---|
| TDA10045H | DVB-T channel receiver |
| TDA1005A | FREQUENCY MULTIPLEX PLL STEREO DECODER |
| TDA1005AT | FREQUENCY MULTIPLEX PLL STEREO DECODER |
| TDA10085 | Single chip DVB-S/DSS channel receiver |
| TDA10085HT | Single chip DVB-S/DSS channel receiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA10045H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:DVB-T channel receiver |
| TDA10046AHT/C1,518 | 制造商:Trident Microsystems, Ltd. 功能描述:TTMTDA10046AHT/C1,518 HYBRID SILICON TUN |
| TDA10046HT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single-chip DVB-T channel |
| TDA10048HC/C200,557 | 制造商:NXP Semiconductors 功能描述:PHATDA10048HC/C200.557 REEL |
| TDA10048HN/C200,51 | 制造商:Entropic Communications 功能描述:TDA10048HN/HVQFN48/REEL13DP//C |
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