LMH0046
www.ti.com
SNLS222F – APRIL 2006 – REVISED APRIL 2013
LMH0046 HD/SD SDI Reclocker With Dual Differential Outputs
Check for Samples: LMH0046
FEATURES
DESCRIPTION
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The LMH0046 HD/SD SDI Reclocker retimes serial
digital video data conforming to the SMPTE 292M
and SMPTE 259M (A & C) 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.
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Supports SMPTE 292M and SMPTE 259M
(A & C) Serial Digital Video Standards
Supports 143 Mbps, 270 Mbps, 1.483 Gbps,
and 1.485 Gbps Serial Data Rate Operation
Supports DVB-ASI at 270 Mbps
Single 3.3V Supply Operation
330 mW Typical Power Consumption
Two Differential, Reclocked Outputs
Choice of Second Reclocked Output or LowJitter, Differential, Data-Rate Clock Output
Single 27 MHz External Crystal or Reference
Clock Input
Manual Rate Select Input
SD/HD Operating Rate Indicator Output
Lock Detect Indicator Output
Output Mute Function for Data and Clock
Auto/Manual Reclocker Bypass
Differential LVPECL Compatible Serial Data
Inputs and Outputs
LVCMOS Control Inputs and Indicator Outputs
20-Pin HTSSOP Package
Industrial Temperature Range: -40°C to +85°C
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 bypass and output mute. The serial
data inputs, outputs, and serial data-rate clock
outputs are differential LVPECL compatible. The CML
serial data and serial data-rate clock outputs 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 HTSSOP package.
APPLICATIONS
•
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
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2013, Texas Instruments Incorporated
LMH0046
SNLS222F – APRIL 2006 – REVISED APRIL 2013
www.ti.com
Typical Application
CABLE
EQUALIZER
LMH0034
HD/SD
RECLOCKER
LMH0046
SERIAL DATA
CABLE
EQUALIZER
LMH0034
HD/SD
SERIALIZER
LMH0030
HD/SD
CROSSPOINT
SWITCH
CLC018 8x8
SD
SERIALIZER
CLC021A
HD/SD
RECLOCKER
LMH0046
HD/SD
RECLOCKER
LMH0046
HD/SD
RECLOCKER
LMH0046
HD/SD
DESERIALIZER
LMH0031
CABLE DRIVER
LMH0302
CABLE DRIVER
LMH0302
PARALLEL
DATA
SERIAL
DATA
CABLE DRIVER
LMH0302
PARALLEL
DATA
Figure 1. 1.485 Gbps Signal Before Reclocking
(0.75 UI Jitter)
2
Figure 2. 1.485 Gbps Signal After Reclocking (0.05
UI Jitter)
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Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: LMH0046
LMH0046
www.ti.com
SNLS222F – APRIL 2006 – REVISED APRIL 2013
Block Diagram
SCO_EN
BYPASS/ AUTO BYPASS
RATE0
SD/ HD
CONTROL LOGIC
LOCK DETECT
RATE1
VCCO
BYPASS
50
50
XTAL IN/EXT CLK
XTAL OUT
LOOP FILTER 1
SCO/SDO2
VCO / PLL
SCO/SDO2
LOOP FILTER 2
VCCO
O/P MUTE
50
50
SDO
SDI
SDI
RETIMER / FIFO
SDO
Connection Diagram
1
2
3
4
5
6
7
8
9
10
20
SCO_EN
19
SD/ HD
18
V
RATE0
CCO
17
SDO
RATE1
16
SDO
SDI
LMH0046 VCCO 15
SDI
14
VCC
SCO/SDO2
13
SCO/SDO2
BP/ AUTO-BP
12
OP MUTE
LOCK DET
11
XTAL IN/EXT CLK XTAL OUT
LF1
LF2
The exposed die attach pad is the negative electrical terminal for this device. It must be connected to the negative
power supply voltage.
Figure 3. 20-Pin HTSSOP
See PWP0020A Package
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Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: LMH0046
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LMH0046
SNLS222F – APRIL 2006 – REVISED APRIL 2013
www.ti.com
Table 1. PIN DESCRIPTIONS
Pin
Description
LF1
Loop Filter
2
LF2
Loop Filter
3
RATE 0
Data Rate Select Input
4
RATE 1
Data Rate Select Input
5
SDI
Data Input True
6
SDI
Data Input Complement
7
VCC
Positive power supply input
8
BYPASS/AUTO BYPASS
Bypass/Auto Bypass mode select
9
OUTPUT MUTE
Data and Clock Output Mute Input (active low)
10
XTAL IN/EXT CLK
Crystal or External Oscillator Input
11
XTAL OUT
Crystal Oscillator Output
12
LOCK DETECT
PLL Lock Detect Output (active high)
13
SCO/SDO2
Serial Clock or Serial Data Output 2 Complement
14
SCO/SDO2
Serial Clock or Serial Data Output 2 True
15
VCCO
Positive power supply input (Output Driver)
16
SDO
Data Output Complement
17
SDO
Data Output True
18
VCCO
Positive power supply input (Output Driver)
19
SD/HD
Data Rate Range Output
20
SCO_EN
Serial Clock or Serial Data 2 Output select (active high enables serial clock output)
VEE
Connect exposed DAP to negative power supply (ground)
DAP
4
Name
1
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Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: LMH0046
LMH0046
www.ti.com
SNLS222F – APRIL 2006 – REVISED APRIL 2013
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings (1) (2)
Supply Voltage (VCC–VEE)
4.0V
VEE−0.15V to
VCC+0.15V
Logic Supply Voltage (Vi)
Logic Input Current (single input):
Vi = VEE−0.15V
−5 mA
Vi = VCC+0.15V
+5 mA
VEE−0.15V to
VCC+0.15V
Logic Output Voltage (Vo)
Logic Output Source/Sink Current
±8 mA
VCC to VCC−2.0V
Serial Data Input Voltage (VSDI)
Serial Data Output Sink Current (ISDO)
Package Thermal Resistance, HTSSOP
24 mA
θJA
θJC
26.6°C/W
2.4°C/W
−65°C to +150°C
Storage Temp. Range
Junction Temperature
+150°C
Lead Temperature (Soldering 4 Sec)
+260°C (Pb-free)
ESD Rating (HBM)
7 kV
ESD Rating (MM)
350V
ESD Rating (CDM)
(1)
(2)
1250V
“Absolute Maximum Ratings” are those parameter values beyond which the life and operation of the device cannot be ensured. The
stating herein of these maximums shall not be construed to imply that the device can or should be operated at or beyond these values.
The table of “Electrical Characteristics” specifies acceptable device operating conditions.
It is anticipated that this device will not be offered in a military qualified version. If Military/Aerospace specified devices are required,
please contact the Texas Instruments Sales Office/Distributors for availability and specifications.
Recommended Operating Conditions
Supply Voltage (VCC–VEE)
3.3V ±5%
Logic Input Voltage
VEE to VCC
Differential Serial Input Voltage
800 mV ±10%
Serial Data or Clock Output Sink
Current (ISO)
16 mA max.
−40°C to +85°C
Operating Free Air Temperature (TA)
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Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: LMH0046
5
LMH0046
SNLS222F – APRIL 2006 – REVISED APRIL 2013
www.ti.com
DC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. (1) (2)
Symbol
(1)
(2)
Parameter
Conditions
Reference
Logic inputs
Min
Typ
Max
Units
2
VCC
V
VEE
0.8
V
VIH
Input Voltage High Level
VIL
Input Voltage Low Level
IIH
Input Current High Level
VIH = VCC
1
65
µA
IIL
Input Current Low Level
VIL = VEE
−1
−25
µA
VOH
Output Voltage High Level IOH = −2 mA
VOL
Output Voltage Low Level
Logic outputs
2
V
IOL = +2 mA
VSDID
Serial Input Voltage,
Differential
SDI
VCMI
Input Common Mode
Voltage
VSDOD
Serial Output Voltage,
Differential
100Ω differential load
VCMO
Output Common Mode
Voltage
100Ω differential load
ICC
Power Supply Current,
3.3V supply, Total
1485 Mbps, NTSC color
bar pattern
SDO, SCO
VEE + 0.6
V
200
1600
mVP-P
VCC−1.6
VCC−0.2
V
880
mVP-P
720
800
VCC −
VSDOD
V
100
mA
Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are referenced to
VEE (equal to zero volts).
Typical values are stated for: VCC = +3.3V, TA = +25°C.
AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. (1)
Symbol
SMPTE 259M, A
BRSD
Serial Data Rate
SMPTE 259M, C
BRSD
Serial Data Rate
SMPTE 292M
TOLJIT
Serial Input Jitter
Tolerance
143 or 270 Mbps (2) (3) (4)
TOLJIT
Serial Input Jitter
Tolerance
143 or 270 Mbps
(2) (5) (6)
TOLJIT
Serial Input Jitter
Tolerance
1483 or 1485 Mbps (2) (5)
Reference
Min
SDI, SDO
SDI
Typ
Max
Units
143
Mbps
270
Mbps
1483,
1485
Mbps
>6
UIP-P
>0.6
UIP-P
>6
UIP-P
>0.6
UIP-P
(3)
(2) (5) (6)
Serial Input Jitter
Tolerance
1483 or 1485 Mbps
tJIT
Serial Data Output Jitter
143 Mbps (5) (7)
0.02
0.08
UIP-P
tJIT
Serial Data Output Jitter
270 Mbps (5) (7)
0.02
0.08
UIP-P
tJIT
Serial Data Output Jitter
1483 or 1485 Mbps (5) (7)
0.05
0.1
UIP-P
Loop Bandwidth
270 Mbps,
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