LMH0056
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SNLS236C – AUGUST 2006 – REVISED APRIL 2013
LMH0056 HD/SD SDI Reclocker with 4:1 Input Multiplexer
Check for Samples: LMH0056
FEATURES
DESCRIPTION
•
The LMH0056 HD/SD SDI Reclocker with 4:1 Input
Multiplexer retimes serial digital video data
conforming to the SMPTE 292M and SMPTE 259M
(A & C) standards. The LMH0056 operates at serial
data rates of 143 Mbps, 270 Mbps, 1.483 Gbps and
1.485 Gbps. The LMH0056 supports DVB-ASI
operation at 270 Mbps. The LMH0056 includes an
integrated 4:1 input multiplexer for selecting one of
four input data streams for retiming.
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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
360 mW Typical Power Consumption
Integrated 4:1 Multiplexed Input
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
48-Pin WQFN Package
Industrial Temperature Range: -40°C to +85°C
The LMH0056 automatically detects the incoming
data rate and adjusts itself to retime the incoming
data to suppress accumulated jitter. The LMH0056
recovers the serial data-rate clock and optionally
provides it as an output. The LMH0056 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 LMH0056 is powered from a single 3.3V supply.
Power dissipation is typically 360 mW. The device is
housed in a 48-pin WQFN 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
1
2
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
LMH0056
SNLS236C – AUGUST 2006 – REVISED APRIL 2013
www.ti.com
Typical Application
LMH0044
Equalizer
LMH0002
Cable Driver
LMH0056
Reclocker
Crosspoint
LMH0044
Equalizer
LMH0002
Cable Driver
LMH0044
Equalizer
Crosspoint
LMH0044
Equalizer
LMH0002
Cable Driver
LMH0056
Reclocker
LMH0044
Equalizer
LMH0002
Cable Driver
Crosspoint
LMH0044
Equalizer
LMH0044
Equalizer
Crosspoint
LMH0044
Equalizer
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
O/P MUTE
VCCO
SDI0
SDI0
50
50
SDI1
SDI1
SDO
RETIMER / FIFO
SDO
SDI2
SDI2
SDI3
SDI3
SEL0
SEL1
2
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SNLS236C – AUGUST 2006 – REVISED APRIL 2013
43
42
41
40
39
38
SCO_EN
LF1
44
VEE
LF2
45
VEE
RATE0
46
VEE
RATE1
47
VEE
SEL0
48
VEE
SEL1
Connection Diagram
37
SDI0
1
36
SD/HD
SDI0
2
35
VCC
VCC
3
34
VCC
SDI1
4
33
SDO
SDI1
5
32
SDO
VCC
6
31
VCC
SDI2
7
30
VCC
SDI2
8
29
SCO/SDO2
VCC
9
28
SCO/SDO2
SDI3
10
27
VEE
SDI3
11
26
VEE
VCC
12
25
VEE
20
21
22
VEE
XTAL OUT
23
24
LOCK DET
19
VEE
18
VEE
O/P MUTE
17
VEE
16
XTAL IN/
EXT CLK
15
VEE
14
VCC
VEE
13
BYPASS/
AUTOBYPASS
LMH0056
(top view)
The exposed die attach pad is the primary negative electrical terminal for this device. It must be connected to the
negative power supply voltage.
Figure 1. 48-Pin WQFN Package
See Package Number RHS0048A
PIN DESCRIPTIONS
Pin No.
Name
Description
1
SDI0
Data Input 0 True
2
SDI0
Data Input 0 Complement
3
VCC
Positive power supply input
4
SDI1
Data Input 1 True
5
SDI1
Data Input 1 Complement
6
VCC
Positive power supply input
7
SDI2
Data Input 2 True
8
SDI2
Data Input 2 Complement
9
VCC
Positive power supply input
10
SDI3
Data Input 3 True
11
SDI3
Data Input 3 Complement
12
VCC
Positive power supply input
13
VEE
Negative power supply input
14
VCC
Positive power supply input
15
BYPASS/AUTO BYPASS
Bypass/Auto Bypass mode select
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LMH0056
SNLS236C – AUGUST 2006 – REVISED APRIL 2013
www.ti.com
PIN DESCRIPTIONS (continued)
Pin No.
Name
Description
16
OUTPUT MUTE
Data and Clock Output Mute input (active low)
17
VEE
Negative power supply input
18
XTAL IN/EXT CLK
Crystal or External Oscillator input
19
VEE
Negative power supply input
20
VEE
Negative power supply input
21
VEE
Negative power supply input
22
XTAL OUT
Crystal Oscillator output
23
VEE
Negative power supply input
24
LOCK DETECT
PLL Lock Detect output (active high)
25
VEE
Negative power supply input
26
VEE
Negative power supply input
27
VEE
Negative power supply input
28
SCO/SDO2
Serial Clock or Serial Data Output 2 Complement
29
SCO/SDO2
Serial Clock or Serial Data Output 2 True
30
VCC
Positive power supply input
31
VCC
Positive power supply input
32
SDO
Data Output Complement
33
SDO
Data Output True
34
VCC
Positive power supply input
35
VCC
Positive power supply input
36
SD/HD
Data Rate Range output
37
SCO_EN
Serial Clock or Serial Data 2 Output select (active high enables serial clock output)
38
VEE
Negative power supply input
39
VEE
Negative power supply input
40
VEE
Negative power supply input
41
VEE
Negative power supply input
42
VEE
Negative power supply input
43
LF1
Loop Filter
44
LF2
Loop Filter
45
RATE 0
Data Rate select input
46
RATE 1
Data Rate select input
47
SEL0
Data Input select input
48
SEL1
Data Input select input
VEE
Connect exposed DAP to negative power supply (ground)
DAP
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.
4
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Product Folder Links: LMH0056
LMH0056
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SNLS236C – AUGUST 2006 – REVISED APRIL 2013
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)
24 mA
Package Thermal Resistance
θJA 48-pin WQFN
26.1°C/W
θJC 48-pin WQFN
1.9°C/W
Storage Temp. Range
−65°C to +150°C
Junction Temperature
+150°C
Lead Temperature (Soldering 4 Sec)
+260°C (Pb-free)
ESD Rating (HBM)
8 kV
ESD Rating (MM)
400V
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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LMH0056
SNLS236C – AUGUST 2006 – REVISED APRIL 2013
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DC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified.
Symbol
Parameter
Conditions
Reference
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
VSDID
Serial Input Voltage,
Differential
VCMI
Input Common Mode
Voltage
VSDOD
Serial Output Voltage,
Differential
100Ω differential load
VCMO
Output Common Mode
Voltage
100Ω differential load
Power Supply Current,
3.3V supply, Total
1485 Mbps, NTSC color
bar pattern
ICC
(1)
(2)
6
Logic inputs
(1) (2)
Logic outputs
2
V
IOL = +2 mA
SDI
SDO, SCO
VEE + 0.6
V
200
1600
mVP-P
VCC−1.6
VCC−0.2
V
880
mVP-P
720
800
VCC−
VSDOD
109
V
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.
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Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: LMH0056
LMH0056
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SNLS236C – AUGUST 2006 – REVISED APRIL 2013
AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified.
Symbol
Parameter
Conditions
BRSD
Serial Data Rate
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) (3)
TOLJIT
Serial Input Jitter Tolerance
1483 or 1485 Mbps
(2) (5) (6)
tJIT
Serial Data Output Jitter
143 Mbps (5) (7)
tJIT
Serial Data Output Jitter
tJIT
BWLOOP
Reference
(1)
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
SDO
UIP-P
0.02
0.08
UIP-P
270 Mbps (5) (7)
0.02
0.08
UIP-P
Serial Data Output Jitter
1483 or 1485 Mbps (5) (7)
0.05
0.1
UIP-P
Loop Bandwidth
270 Mbps,
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