LMH0307GRE/NOPB National Semiconductor, LMH0307GRE/NOPB Datasheet

IC CBL DVR DUAL HD/SD 25-UARRAY

LMH0307GRE/NOPB

Manufacturer Part Number
LMH0307GRE/NOPB
Description
IC CBL DVR DUAL HD/SD 25-UARRAY
Manufacturer
National Semiconductor
Type
Driverr
Datasheet

Specifications of LMH0307GRE/NOPB

Applications
Amplifiers, Video Distribution
Mounting Type
Surface Mount
Package / Case
25-Micro Array
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LMH0307GRETR
© 2011 National Semiconductor Corporation
3 Gbps HD/SD SDI Dual Output Cable Driver with Cable
Detect
General Description
The LMH0307 3 Gbps HD/SD SDI Dual Output Cable Driver
with Cable Detect is designed for use in SMPTE 424M,
SMPTE 292M, SMPTE 344M, and SMPTE 259M serial digital
video applications. The LMH0307 implements two comple-
mentary output drivers and drives 75Ω transmission lines
(Belden 1694A, Belden 8281, or equivalent) at data rates up
to 2.97 Gbps.
The LMH0307 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 LMH0307 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 LMH0307 is powered from a single 3.3V supply. Power
consumption is typically 230 mW in SD mode and 275 mW in
HD mode. The LMH0307 is available in two space–saving
packages: a 4 x 4 mm 16-pin LLP and even more space–
efficient 3 x 3 mm 25-ball MICRO-ARRAY package.
Typical Application
300479
LMH0307
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: 230 mW in SD mode and
275 mW in HD mode
Power save mode typical power consumption: 4 mW
Single 3.3V supply operation
Differential input
Dual complementary 75Ω outputs
Selectable slew rate
Industrial temperature range: −40°C to +85°C
16-pin LLP or 25-ball MICRO-ARRAY package
SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE
259M serial digital interfaces
Digital video routers and switches
Distribution amplifiers
30047903
February 10, 2011
www.national.com

Related parts for LMH0307GRE/NOPB

LMH0307GRE/NOPB Summary of contents

Page 1

... SD mode and 275 mode. The LMH0307 is available in two space–saving packages 16-pin LLP and even more space– efficient 25-ball MICRO-ARRAY package. Typical Application © 2011 National Semiconductor Corporation LMH0307 Features ■ SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M compliant ■ ...

Page 2

Connection Diagrams The exposed die attach pad is a negative electrical terminal for this device. It should be connected to the negative power supply voltage. www.national.com 30047905 16-Pin LLP Order Number LMH0307SQ NS Package Number SQB16A 25-Ball MICRO-ARRAY Order Number ...

Page 3

Ordering Information Part Number LMH0307SQ LMH0307SQE LMH0307SQX LMH0307GR LMH0307GRE LMH0307GRX Pin Descriptions LLP Pin MICRO- Name ARRAY Ball 1 A1 SDI 2 B1 SDI 4 D1 REF 5 D2 RSTI 6 E2 ENABLE 7 E3 SDA 8 E4 ...

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  θ 25-ball MICRO-ARRAY JA DC Electrical Characteristics Over ...

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 LMH0307 accepts either differential or single-ended in- put. For single-ended operation, the unused input must be properly terminated. OUTPUT INTERFACING The LMH0307 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

Application Information Figure 1 shows the application circuit for the LMH0307. COMMUNICATING WITH MULTIPLE LMH0307 CABLE DRIVERS VIA THE SMBus A common application for the LMH0307 will utilize multiple cable driver devices. Even though the LMH0307 devices all have the ...

Page 9

FIGURE 2. SMBus Configuration for Multiple LMH0307 Cable Drivers The RSTI pin of the first device is controlled by the system with a GPO pin from the host. The first LMH0307 RSTO pin is then daisy chained to the next ...

Page 10

Address R/W Name Bits Field 00h R/W ID 7:1 01h R STATUS 7:5 02h R/W MASK www.national.com TABLE 1. SMBus Registers Default Description DEVID 0010111 Device ID. Writing this register will force the RSTO pin high. Further accesses to the ...

Page 11

Address R/W Name Bits Field 03h R/W DIRECTION 04h R/W OUTPUT0 7:5 4:0 Default Description HDTF0ThreshLSB 1 Least Significant Bit for HDTF0Thresh detection threshold. Combines with HDTF0Thresh bits in register 04h. SDTF0ThreshLSB ...

Page 12

Address R/W Name Bits Field 05h R/W OUTPUT0CTRL 2:0 06h R/W OUTPUT1 7:5 4:0 07h R/W OUTPUT1CTRL 5:3 2:0 www.national.com Default Description 7 RSVD 0 Reserved as 0. Always write 0 to this bit. 6 FLOSOF 0 Force LOS to ...

Page 13

Address R/W Name Bits Field 08h R/W TEST 7:5 4:0 09h R REV 7:5 4:3 2:0 0Ah R TF0PCOUNT 7:5 4:0 0Bh R TF0NCOUNT 7:5 4:0 0Ch R TF1PCOUNT 7:5 4:0 0Dh R TF1NCOUNT 7:5 4:0 Default Description CMPCMD 000 ...

Page 14

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 16-Pin LLP Order Number LMH0307SQ NS Package Number SQB16A 25-Ball MICRO-ARRAY Order Number LMH0307GR NS Package Number GRA25A 14 ...

Page 15

Notes 15 www.national.com ...

Page 16

... 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 ...

Related keywords