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參數(shù)資料
| 型號： | TDA10085 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 接收器 |
| 英文描述： | Single chip DVB-S/DSS channel receiver |
| 中文描述： | 單芯片DVB-S/DSS頻道接收機(jī) |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 93K |
| 代理商： | TDA10085 |
2001 Aug 31
3
Philips Semiconductors
Product specification
Single chip DVB-S/DSS channel receiver
TDA10085HT
1
FEATURES
DSS and DVB-S compliant single chip demodulator and
forward error correction
Dual 6-bit Analog-to-Digital Converter (ADC) on-chip
PLL that allows using a low-cost crystal
(typically 4 MHz)
DiSEqC 1.X from 1 to 8 byte-long sequences with
modulated or unmodulated output
DSS dish control
Digital cancellation of ADC offset
Simultaneous parallel and serial output interfaces
Variable rate BPSK/QPSK coherent demodulator
Modulation rate variable from 1 to 49 Mbauds
Automatic gain control output
Digital symbol timing recovery:
– Acquisition range up to 960 ppm
Carrier offset cancellation up to one half of the sampling
frequency
Digital carrier recovery:
– Acquisition range up to 12% of the symbol rate
Half-Nyquist filters: roll-off = 0.35 for DVB and
0.2 for DSS
Interpolating and anti-aliasing filters to handle variable
symbol rates
Channel quality estimation
Spectral inversion ambiguity resolution
Viterbi decoder:
– Supported rates from 1/2 to 8/9
– Constraint length K = 7 with G1 = 171
8
and
G2 = 133
8
– Viterbi output BER measurement
– Automatic code rate search within
1
/
2
,
2
/
3
and
6
/
7
in
DSS mode
– Automatic code rate search within
1
/
2
,
2
/
3
,
3
/
4
,
5
/
6
and
7
/
8
in DVB-S mode
Convolutional de-interleaver and Reed Solomon
decoder according to DVB and DSS specifications
Automatic frame synchronization
Selectable DVB-S descrambling
I
2
C-bus interface
64-pin TQFP package
CMOS technology (0.2
μ
m, 1.8 V to 3.3 V).
2
APPLICATIONS
DVB-S receivers (ETS 300-421)
DSS receivers.
3
GENERAL DESCRIPTION
The TDA10085 is a single-chip channel receiver for
satellite television reception matching both DSS and
DVB-S standards. The device contains a dual 6-bit flash
ADC, variable rate BPSK/QPSK coherent demodulator
andforwarderrorcorrectionfunctions.TheADCinterfaces
directly with I and Q analog baseband signals.
After analog-to-digital conversion, the TDA10085
implements a bank of cascadable filters as well as
anti-alias and half-Nyquist filters. An analog AGC signal is
generated using an amplitude estimation function. The
TDA10085 performs clock recovery at twice the baud rate
and achieves coherent demodulation without any
feedback to the local oscillator. Forward error correction is
built around two error-correcting codes: a Reed-Solomon
(outer code) and a Viterbi decoder (inner code). The
Reed-Solomon decoder corrects up to 8 erroneous bytes
among the N (204) bytes of one data packet.
A convolutional de-interleaver is located between the
Viterbi output and the Reed-Solomon decoder input. The
de-interleaver and Reed-Solomon decoder are
automatically synchronized according to a frame
synchronization algorithm that uses the sync pattern
present in each packet. The TDA10085 is controlled via an
I
2
C-bus interface. The circuit operates at sampling
frequencies up to 100 MHz, can process variable
modulation rates and achieves transmission rates up to
45 Mbaud. Furthermore, for dish control applications,
hardware supports DiSEqc 1.x with control access via the
I
2
C-bus.
An interrupt line that can be programmed to activate on
events or on timing information is provided.
Designed in 20 micron CMOS technology and housed in a
TQFP64 package, the TDA10085 operates over the
commercial temperature range.
相關(guān)PDF資料 |
PDF描述 |
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| TDA10085HT | Single chip DVB-S/DSS channel receiver |
| TDA1010 | 6 W audio power amplifier in car applications 10 W audio power amplifier in mains-fed applications |
| TDA1010A | 6 W audio power amplifier in car applications 10 W audio power amplifier in mains-fed applications |
| TDA1011 | 2 to 6 W audio power amplifier |
| TDA1013B | 4 W audio power amplifier with DC volume control |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA10085HT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single chip DVB-S/DSS channel receiver |
| TDA1010 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:6 W audio power amplifier in car applications 10 W audio power amplifier in mains-fed applications |
| TDA1010A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:6 W audio power amplifier in car applications 10 W audio power amplifier in mains-fed applications |
| TDA1011 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2 to 6 W audio power amplifier |
| TDA1011A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2 to 5W audio power amplifier with preamplifier |
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