- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382705 > U4476B IF Amplifier / Converter for DVB (Cable) PDF資料下載
參數(shù)資料
| 型號： | U4476B |
| 英文描述： | IF Amplifier / Converter for DVB (Cable) |
| 中文描述： | 中頻放大器/轉(zhuǎn)換器，用于DVB（電纜） |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 187K |
| 代理商： | U4476B |
U4476B
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A2, 15-Jan-98
1 (7)
IF Amplifier / Converter for DVB (Cable)
Description
The U4476B is a bipolar circuit for the processing of
DVB-Cable IF signals (
D
igital
V
ideo
B
roadcasting). The
amplifier/ converter is suitable for QAM modulated IF
signals (1st IF) and provides the gain controlled 2nd IF.
With 5 V supply voltage the IC allows application in
RF/IF front ends for DVB-Cable receivers (set top boxes).
Features
Gain controlled amplifier for the 1st IF (36 MHz)
IF converter for the 2nd IF (7 MHz);
VCO circuit is controlled by external PLL
Bandwidth of the output signal: 10 MHz (–1 dB)
Internal AGC with average detection for the QAM
modulated DVB signal, reference level is adjustable
5 V supply voltage; low-power consumption
Package:
28-pin small outline plastic package (SO28)
Block Diagram
Tuner
AGC
Band
Gap
Control
AGC:
QAM
VCO
PLL
I
2
C
IF 2
Tuner
V
S
2nd IF
Input
select
12703
5
6
9
10
Ref
(DVB)
7
12
11
24
3
8
21
23
22
20
18
13
15
28
IF 1
Figure 1. Block diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| U454B | Low cost triple video buffer/filter for standard video |
| U4790B | Wide band low noise operational amplifiers |
| U4791B | Automotive Lamp Outage Monitor, VT = 53 mV |
| U482(BAGGEDIN10S) | 320MHz single supply video buffer with low in/out rail |
| U483(BAGGEDIN10S) | 320MHz single supply video buffer with low in/out rail |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| U4476B-MFLG3 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:IF Amplifier / Converter for DVB (Cable) |
| U4477B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TELEFUNK ELECTRONIC CREATIVE TECHNOLOGIEN U2200B-FP |
| U4479B | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:DVB-Cable IF Converter and Full Multi-Standard Video-/Sound IF Processing |
| U4479B-MFLG3 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:DVB-Cable IF Converter and Full Multi-Standard Video-/Sound IF Processing |
| U4488B | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Quasi-Split Sound Circuit and AM Demodulator |
發(fā)布緊急采購，3分鐘左右您將得到回復。