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參數(shù)資料
| 型號： | GS1540-CQR |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | HDTV Serial Digital Non-Equalizing Receiver |
| 中文描述： | 高清晰度電視串行數(shù)字非均等接收機 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 180K |
| 代理商： | GS1540-CQR |
GENNUM CORPORATION
522 - 27- 00
10
G
Fig. 13 PCLK Output Circuit
Fig. 14 SDO_EN Circuit
Fig. 15 Serial Output Stage Circuit
DETAILED DESCRIPTION
The GS1540 is a single standard receiver for serial digital
HDTV signals at 1.485Gb/s and 1.485/1.001Gb/s.
UNIQUE SLEW PHASE LOCK LOOP (S-PLL):
A unique feature of the GS1540 is the innovative slew phase
lock loop (S-PLL). When a step phase change is applied to
the PLL, the output phase gains constant rate of change
with respect to time. This behaviour is termed slew.
Figure 16 shows an example of input and output phase
variation over time for slew and linear (conventional) PLLs.
Since the slewing is a nonlinear behavior, the small signal
analysis cannot be done in the same way as the standard
PLL. However, it is still possible to plot input jitter transfer
characteristics at a constant input jitter modulation.
Fig. 16 PLL Characteristics
Slew PLLs offer several advantages such as excellent noise
immunity. Because of the infinite bandwidth for an infinitely
small input jitter modulation (or jitter introduced by VCO),
the loop corrects for that immediately thus the small signal
noise of the VCO is cancelled. The GS1540 uses a very
clean, external VCO called the GO1515 (refer to the
GO1515 Data Sheet for details). In addition, the bi-level
digital phase detector provides constant loop bandwidth
that is predominantly independent of the data transition
density. The loop bandwidth of a conventional tri-stable
charge pump drops with reducing data transitions. During
pathological signals, the data transition density reduces
from 0.5 to 0.05, but the slew PLL
’
s performance essentially
remains unchanged.
PCLK_V
EE
PCLK_V
CC
27k
100
PCLK
SDO_V
EE
SDO_V
CC
2k
20k
SDO_EN
50
50
SDO
SDO
SDO_V
EE
SDO_V
CC
0.2
0.1
0.0
INPUT
OUTPUT
SLEW PLL RESPONSE
P
0.2
0.1
0.0
INPUT
OUTPUT
LINEAR (CONVENTIONAL) PLL RESPONSE
P
相關PDF資料 |
PDF描述 |
|---|---|
| GS1545 | HDTV Serial Digital Equalizing Receiver |
| GS1545-CQR | HDTV Serial Digital Equalizing Receiver |
| GS1881-IKA | Monolithic Video Sync Separators |
| GS1881-ITA | Monolithic Video Sync Separators |
| GS4881 | Monolithic Video Sync Separators |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| GS1540-CQRE3 | 制造商:Semtech Corporation 功能描述:HD Non-Equalizing Receiver |
| GS1545 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:HDTV Serial Digital Equalizing Receiver |
| GS1545_04 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:HDTV Serial Digital Equalizing Receiver |
| GS1545-CQR | 制造商:Rochester Electronics LLC 功能描述: 制造商:Gennum Corporation 功能描述: |
| GS1545-CQRE3 | 制造商:Semtech Corporation 功能描述:High Performance integrated Equalizing Receiver 128-Pin MQFP 制造商:Semtech Corporation 功能描述:HD Equalizing Receiver |
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