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參數(shù)資料
| 型號(hào)： | HDM8513A |
| 廠商： | Hynix Semiconductor Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Linear Voltage Regulator IC; Package/Case:3-TO-92; Supply Voltage:30V; Output Voltage:5V; Current Rating:0.1A; Operating Temp. Max:70 C; Operating Temp. Min:0 C; Output Voltage Max:5V; Voltage Regulator Type:Positive Voltage |
| 中文描述： | 的DVB /決策支持系統(tǒng)兼容接收器 |
| 文件頁數(shù)： | 30/67頁 |
| 文件大?。?/td> | 261K |
| 代理商： | HDM8513A |
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30
3.8 DBS Receiver
The HDM8513A DVB Demodulator including a dual A/D converter and the MPEG-2 decoder provide
the core digital processing technology for a DBS receiver conforming with the DVB standard.
Clock
8
MC68306
(MC68340)
Host
Processor
L-Band
Tuner
480
IF
MHz
Down-
converter
Coarse
Tuning
Step
Frequency
Control
Low
Filter
WB
AGC
480
Loop
Filter
MHz
SL1710
Serial
BSFC77GV6
8
Access
Interface
AGC
2
AGC
1
Fixed
Frequency
PLL
Control
3
I
Q
HDM8513A
MPEG-2
Demultiplexer
DRAM
Video
Audio
F
IGURE
21: T
YPICAL
S
ET
T
OP
B
OX
D
EMODULATOR
A tuner accepts an L-band RF input from the antenna/LNB assembly located outside the building.
A host processor controls the tuner to the nominal center frequency of the target signal. Baseband
I and Q outputs from the downconverter are applied to an A/D converter pair which is sampled at a
fixed rate, 60MHz as illustrated in this example. The tuner is required to filter the received
baseband signal to a bandwidth less than half the sampling rate, but is not required to perform
matched filtering.
Once the HDM8513A has locked to the target signal, the host processor may read the internal
registers to determine the steady state frequency error. This error would be used to make period
corrections to the programmed frequency of the tuner PLL.
The HDM8513A provides an output which can be used to control the analog AGC in the tuner. This
digital signal must be filtered and amplified before applying it to the AGC control element. When
the loop is closed, the signal applied to the A/D converters is optimally scaled.
相關(guān)PDF資料 |
PDF描述 |
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| HDM8513AP | Timer IC; Supply Voltage Max:16V; Package/Case:14-DIP; Current Rating:10A; Timer Type:Timer-Dual; Mounting Type:Through Hole |
| HDM8513AT | Darlington Bipolar Transistor; Power Dissipation:175W; Package/Case:TO-3; Mounting Type:Through Hole; Current Rating:20A; Voltage Rating:500V |
| HDM8515 | ANALOG IC - DATASHEET REFERENCE |
| HDM8515P | Operational Amplifier (Op-Amp) IC; Number of Amplifiers:4; Package/Case:14-DIP; Op Amp Type:Low Power; Single Supply Voltage Min (+V):3V; Dual Supply Voltage Max (+/- V):16V; Amplifier Type:Operational; Mounting Type:Through Hole |
| HE6SF200 | High efficiency super fast silicon rectifier diode |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HDM8513AP | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:DVB/DSS Compliant Receiver |
| HDM8513AT | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:DVB/DSS Compliant Receiver |
| HDM8515 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:DVB/DSS Compliant Receiver |
| HDM8515P | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:DVB/DSS Compliant Receiver |
| HDM9010 | 制造商:SHOULDER 制造商全稱:SHOULDER 功能描述:Frequency Synthesizer |
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