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PDF LMH0046 Data sheet ( Hoja de datos )
| Número de pieza | LMH0046 | |
| Descripción | HD/SD Multi-Rate Serial Digital Video Data Reclocker | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LMH0046 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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PRELIMINARY
April 2006
LMH0046
HD/SD Multi-Rate Serial Digital Video Data Reclocker
General Description
The LMH0046 HD/SD Multi-Rate Serial Digital Video Data
Reclocker is a monolithic integrated circuit that retimes bit-
serial digital video data conforming to the SMPTE 259M (A &
C) and SMPTE 292M standards. The LMH0046 operates at
serial data rates of 143 Mbps, 270 Mbps, 1.483 Gbps and
1.485 Gbps. The LMH0046 supports DVB-ASI operation at
270 Mbps.
The LMH0046 automatically detects the incoming data rate
and adjusts itself to retime the incoming data to suppress
accumulated jitter. The LMH0046 recovers the serial data-
rate clock and optionally provides it as an output. The
LMH0046 has two differential serial data outputs; the second
output may be selected as a low-jitter, data-rate clock output.
Controls and indicators are: serial clock or second serial
data output select, manual rate select input, SD/HD rate
indicator output, lock detect output, auto/manual data by-
pass and output mute. The serial data inputs, outputs, and
serial data-rate clock outputs are differential LVPECL com-
patible. The CML serial data and serial data-rate clock out-
puts are suitable for driving 100Ω differentially terminated
networks. The control logic inputs and outputs are LVCMOS
compatible.
The LMH0046 is powered from a single 3.3V supply. Power
dissipation is typically 330 mW. The device is housed in a
20-pin TSSOP package.
Features
n Supports SMPTE 259M (A & C) and SMPTE 292M
serial digital video standards
n Supports 143 Mbps, 270 Mbps, 1.483 Gbps, and 1.485
Gbps serial data rate operation
n Supports DVB-ASI at 270 Mbps
n Single 3.3V supply operation
n 330 mW typical power consumption
n Two differential, reclocked outputs
n Choice of second reclocked output or low-jitter,
differential, data-rate clock output
n Single 27 MHz external crystal or reference clock input
n Manual rate select input
n SD/HD operating rate indicator output
n Lock Detect indicator output
n Output mute function for data and clock
n Auto/Manual reclocker bypass
n Differential LVPECL compatible serial data inputs and
outputs
n LVCMOS control inputs and indicator outputs
n 20-Pin TSSOP package
n Industrial temperature range: -40˚C to +85˚C
Applications
n SDTV/HDTV serial digital video interfaces for:
— Digital video routers and switchers
— Digital video processing and editing equipment
— DVB-ASI equipment
— Video standards and format converters
Typical Application
© 2006 National Semiconductor Corporation DS201826
20182601
www.national.com
1 page  
AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. (Note 3)
Symbol
BRSD
BRSD
BRSD
Parameter
Serial Data Rate
Serial Data Rate
Serial Data Rate
Conditions
SMPTE 259M, A
SMPTE 259M, C
SMPTE 292M
Reference
SDI, SDO
SDI, SDO
SDI, SDO
TOLJIT
TOLJIT
TOLJIT
TOLJIT
tJIT
tJIT
tJIT
λBW
δ
FCO
FCO
FCO
FCO
tJIT
TACQ
tr, tf
tr, tf
tr, tf
tr, tf
tr, tf
Serial Input Jitter
Tolerance
Serial Input Jitter
Tolerance
Serial Input Jitter
Tolerance
Serial Input Jitter
Tolerance
Additive Output Jitter
Additive Output Jitter
Additive Output Jitter
Jitter Transfer Function
−3 dB Bandwidth
(Fractional Loop
Bandwidth)
Jitter Transfer Function
Peaking
Serial Clock Output
Frequency
Serial Clock Output
Frequency
Serial Clock Output
Frequency
Serial Clock Output
Frequency
Serial Clock Output
Jitter
Serial Clock Output
Alignment with respect
to Data Interval
Serial Clock Output
Duty Cycle
Acquisition Time
Input rise/fall time
Input rise/fall time
Input rise/fall time
Output rise/fall time
Output rise/fall time
143 or 270 Mbps,
(Notes 7, 8, 9)
SDI
143 or 270 Mbps,
(Notes 7, 8, 10, 13)
SDI
1483 Mbps or 1485
Mbps, (Notes 7, 8, 9)
SDI
1483 Mbps or 1485
SDI
Mbps, (Notes 7, 8, 10,
13)
143 Mbps, (Note 8)
SDO
270 Mbps, (Note 8)
SDO
1483 Mbps, 1485 Mbps, SDO
(Note 8)
All supported data rates,
(Note 11)
All supported data rates,
(Note 12)
143 Mbps data rate
SCO, SCO
270 Mbps data rate
SCO, SCO
1483 Mbps data rate
SCO, SCO
1485 Mbps data rate
SCO, SCO
SCO, SCO
SDO, SDO,
SCO, SCO
SCO, SCO
Color bar pattern or
PRBS 23 sequence.
(Note 6)
10%–90%
Logic inputs
20%–80%, 143 or 270 SDI
Mbps
20%–80%, 1483 or
SDI
1485 Mbps
10%–90%, CL = 5 pF Logic outputs
20%–80%,1483 or 1485 SDO, SDO,
Mbps, (Note 5)
SCO, SCO
Min
>6
>0.6
>6
>0.6
0.1
35
40
400
80
Typ
143
270
1483,
1485
0.02
0.02
0.05
0.25
0.05
143
270
1483
1485
2
10
1.5
120
1.5
90
Max
0.08
0.08
0.1
Units
Mbps
Mbps
Mbps
UIP-P
UIP-P
UIP-P
UIP-P
UIP-P
UIP-P
UIP-P
0.35
%BRSD
0.1 dB
MHz
MHz
MHz
MHz
3 psRMS
65 %
60 %
3
1500
170
3
130
ms
ns
ps
ps
ns
ps
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| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet LMH0046.PDF ] | |
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