LMH0303SQE/NOPB National Semiconductor, LMH0303SQE/NOPB Datasheet

IC CABLE DVR 3G HD/SD SDI 16LLP

LMH0303SQE/NOPB

Manufacturer Part Number
LMH0303SQE/NOPB
Description
IC CABLE DVR 3G HD/SD SDI 16LLP
Manufacturer
National Semiconductor
Type
Driverr
Datasheet

Specifications of LMH0303SQE/NOPB

Applications
Amplifiers, Video Distribution
Package / Case
16-LLP
Leaded Process Compatible
Yes
Rohs Compliant
Yes
Peak Reflow Compatible (260 C)
Yes
Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Operating Temperature (max)
85C
Package Type
LLP EP
Rad Hardened
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Mounting Type
-
Lead Free Status / Rohs Status
Compliant
Other names
LMH0303SQETR
© 2011 National Semiconductor Corporation
3 Gbps HD/SD SDI Cable Driver with Cable Detect
General Description
The LMH0303 3 Gbps HD/SD SDI Cable Driver with Cable
Detect is designed for use in SMPTE 424M, SMPTE 292M,
SMPTE 344M, and SMPTE 259M serial digital video appli-
cations. The LMH0303 drives 75Ω transmission lines (Belden
1694A, Belden 8281, or equivalent) at data rates up to 2.97
Gbps.
The LMH0303 includes intelligent sensing capabilities to im-
prove system diagnostics. The cable detect feature senses
near-end termination to determine if a cable is correctly at-
tached to the output BNC. Input loss of signal (LOS) detects
the presence of a valid signal at the input of the cable driver.
These sensing features may be used to alert the user of a
system fault and activate a deep power save mode, reducing
the cable driver's power consumption to 4 mW. These fea-
tures are accessible via an SMBus interface.
The LMH0303 provides two selectable slew rates for SMPTE
259M and SMPTE 424M / 292M compliance. The output am-
plitude is adjustable ±10% in 5 mV steps via the SMBus.
The LMH0303 is powered from a single 3.3V supply. Power
consumption is typically 130 mW in SD mode and 155 mW in
HD mode. The LMH0303 is available in a 16-pin LLP pack-
age.
Typical Application
300432
LMH0303
Features
Applications
SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE
259M compliant
Data rates to 2.97 Gbps
Supports DVB-ASI at 270 Mbps
Cable detect on output
Loss of signal detect at input
Output driver power down control
Typical power consumption: 130 mW in SD mode and
155 mW in HD mode
Power save mode typical power consumption: 4 mW
Single 3.3V supply operation
Differential input
75Ω differential output
Selectable slew rate
Industrial temperature range: −40°C to +85°C
16-pin LLP package
Footprint compatible with the LMH0302
SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE
259M serial digital interfaces
Digital video routers and switches
Distribution amplifiers
30043203
February 10, 2011
www.national.com

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LMH0303SQE/NOPB Summary of contents

Page 1

... The LMH0303 is powered from a single 3.3V supply. Power consumption is typically 130 mode and 155 mode. The LMH0303 is available in a 16-pin LLP pack- age. Typical Application © 2011 National Semiconductor Corporation LMH0303 Features ■ SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M compliant ■ ...

Page 2

Connection Diagram The exposed die attach pad is a negative electrical terminal for this device. It should be connected to the negative power supply voltage. Ordering Information Part Number LMH0303SQ LMH0303SQE LMH0303SQX www.national.com 30043205 16-Pin LLP Order Number LMH0303SQ NS ...

Page 3

Pin Descriptions Pin Name Description 1 SDI Serial data true input. 2 SDI Serial data complement input Negative power supply (ground Bias resistor. Connect a 750Ω resistor to V REF 5 RSTI Reset input. RSTI ...

Page 4

Absolute Maximum Ratings Supply Voltage: Input Voltage (all inputs) Output Current Storage Temperature Range Junction Temperature Lead Temperature (Soldering 4 Sec) Package Thermal Resistance  θ 16-pin LLP JA  θ 16-pin LLP JC DC Electrical Characteristics Over Supply Voltage and Operating ...

Page 5

AC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Parameter DR Input Data Rate SDI t Additive Jitter jit t ,t Output Rise Time, Fall Time r f Mismatch in Rise/Fall Time Duty Cycle Distortion ...

Page 6

Timing Diagram Device Operation INPUT INTERFACING The LMH0303 accepts either differential or single-ended in- put. For single-ended operation, the unused input must be properly terminated. OUTPUT INTERFACING The LMH0303 uses current mode outputs. Single-ended out- put levels are 800 mV ...

Page 7

SMBus TRANSACTIONS The device supports WRITE and READ transactions. See Register Description table for register address, type (Read/ Write, Read Only), default value and function information. WRITING A REGISTER To write a register, the following protocol is used (see SMBus ...

Page 8

COMMUNICATING WITH MULTIPLE LMH0303 CABLE DRIVERS VIA THE SMBus A common application for the LMH0303 will utilize multiple cable driver devices. Even though the LMH0303 devices all have the same default SMBus device ID (address still possible for ...

Page 9

SMBus Registers Address R/W Name Bits Field 00h R/W ID 7:1 0 01h R STATUS 7 02h R/W MASK 4 TABLE 1. SMBus Registers Default Description DEVID 0010111 Device ID. Writing ...

Page 10

Address R/W Name Bits Field 03h R/W DIRECTION 5:3 04h R/W OUTPUT 7:5 4:0 www.national.com Default Description 7 HDTFThreshLSB 1 Least Significant Bit for HDTFThresh detection threshold. Combines with HDTFThresh bits in register 04h. 6 SDTFThreshLSB 1 Least Significant Bit ...

Page 11

Address R/W Name Bits Field 05h R/W OUTPUTCTRL 2:0 06h R/W RSVD 7:0 07h R/W RSVD 7:0 08h R/W TEST 7:5 4:0 Default Description RSVD 0 Reserved as 0. Always write 0 to this bit. ...

Page 12

Address R/W Name Bits Field 09h R REV 7:5 4:3 2:0 0Ah R TFPCOUNT 7:5 4:0 0Bh R TFNCOUNT 7:5 4:0 www.national.com Default Description RSVD 000 Reserved. DIREV 10 Die Revision. PARTID 011 Part Identifier. Note that single output devices ...

Page 13

Physical Dimensions inches (millimeters) unless otherwise noted 16-Pin LLP Order Number LMH0303SQ NS Package Number SQB16A 13 www.national.com ...

Page 14

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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