LMH0031VS/NOPB National Semiconductor, LMH0031VS/NOPB Datasheet - Page 10

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LMH0031VS/NOPB

Manufacturer Part Number
LMH0031VS/NOPB
Description
IC DESER/DESCRAM DGTL VID 64TQFP
Manufacturer
National Semiconductor
Type
Descrambler/Deserializerr
Datasheet

Specifications of LMH0031VS/NOPB

Applications
SDTV/HDTV
Mounting Type
Surface Mount
Package / Case
64-TQFP, 64-VQFP
Input Voltage
3.3 V
Supply Voltage (max)
3.45 V
Supply Voltage (min)
3.15 V
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
For Use With
SD131EVK - BOARD EVALUATION LMH0031
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*LMH0031VS
*LMH0031VS/NOPB
LMH0031VS

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LMH0031VS/NOPB
Manufacturer:
Texas Instruments
Quantity:
10 000
www.national.com
Timing Diagram
Device Operation
INTRODUCTION
The
Deserializer/Decoder is used in digital video signal origina-
tion and destination equipment: cameras, video tape record-
ers, telecines, editors, standards converters, video test and
other equipment. It decodes and converts serial SDTV or
HDTV component digital video signals into parallel format.
The LMH0031 decoder/deserializer processes serial digital
video (SDV) signals conforming to SMPTE 259M, SMPTE
344M (proposed) or SMPTE 292M and operates at serial
data rates of 270 Mbps, 360 Mbps, 540 Mbps, 1.483 Gbps
and 1.485 Gbps. Corresponding parallel output data rates
are 27.0 MHz, 36.0 MHz, 54.0 MHz, 74.176MHz and
74.25 MHz.
The LMH0031 accepts ECL or LVDS serial data input sig-
nals. Outputs signals are compatible with LVCMOS logic
devices.
Note: In the following explanations, these logical equiva-
lences are observed: ON
and OFF
LMH0031
Disabled
SMPTE
Reset
Enabled
292M/259M
False
Set
Logic_0.
True
Digital
Logic_1
Video
10
VIDEO DATA PATH
The Serial Data Inputs (SDI) accept serial video data at
SMPTE 259M standard definition, SMPTE 344M (proposed)
or SMPTE 292M high-definition data rates. These inputs
accept standard ECL or LVDS signal levels and may be used
single-ended or differentially. Inputs may be DC or AC
coupled, as required, to devices and circuits supplying the
data. Recommended operating conditions and all input DC
and AC voltage and current specifications shall be observed
when designing the input coupling circuits.
For convenience, a reference bias source, pin name R
sets the reference current available from the input bias
source, pin name R
R
may be supplied DC bias voltage via external resistors when
the inputs are AC-coupled. The bias source should be
loaded with a resistance to the V
current available at R
input biasing scheme using R
REF
is 4.75kΩ, 1%. R
BB
BB
. The recommended nominal value of
BB
is 200µA. Figure 1 shows a typical
is provided so that the SDI inputs
20179608
BB
and R
SS
REF
supply. The source
.
REF
,

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