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| LMH0001 SMPTE 259M / 344M Serial Digital Cable Driver December 5, 2007 LMH0001 SMPTE 259M / 344M Serial Digital Cable Driver General Description The LMH0001 SMPTE 259M / 344M Serial Digital Cable Driver is designed for use in SMPTE 259M / 344M serial digital video applications. The LMH0001 drives 75 transmission lines (Belden 8281, Belden 1694A or equivalent) at data rates up to 540 Mbps. The output voltage swing of the LMH0001 is adjustable via a single external resistor. The LMH0001 is powered from a single 3.3V supply. Power consumption is typically 125mW. The LMH0001 is available in a 16-pin LLP package. Features SMPTE 259M and SMPTE 344M compliant Data rates to 540 Mbps Differential input 75 differential output Adjustable output amplitude Single 3.3V supply operation Industrial temperature range: -40C to +85C 125mW typical power consumption 16-pin LLP package Footprint compatible with the LMH0002SQ and the GS9078A. Applications SMPTE 259M and SMPTE 344M serial digital interfaces Sonet/SDH and ATM interfaces Digital routers and switches Distribution amplifiers Buffer applications Set top boxes Security cameras Typical Application 30027202 (c) 2007 National Semiconductor Corporation 300272 www.national.com LMH0001 Absolute Maximum Ratings (Note 1) Supply Voltage: Input Voltage (all inputs) Output Current Storage Temperature Range Junction Temperature Lead Temperature (Soldering 4 Sec) Package Thermal Resistance JA 16-pin LLP JC 16-pin LLP -0.5V to 3.6V -0.3V to VCC+0.3V 28mA -65C to +150C +150C +260C +78.9C/W +42.7C/W ESD Rating (HBM) ESD Rating (MM) 5kV 250V Recommended Operating Conditions Supply Voltage (VCC - VEE): Operating Free Air Temperature (TA) 3.3V 5% -40C to +85C DC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Notes 2, 3). Symbol Parameter VCMIN VSDI VCMOUT VSDO Input Common Mode Voltage Input Voltage Swing Output Common Mode Voltage Output Voltage Swing Single-ended, 75 load, RREF = 750 1% Single-ended, 75 load, RREF = 590 1% ICC Supply Current (Note 5) Differential SDO, SDO Conditions Reference SDI, SDI Min 1.6 + VSDI/2 100 VCC - VSDO 750 900 800 1000 38 850 1100 43 Typ Max VCC - VSDI/2 2000 Units V mVP-P V mVP-P mVP-P mA AC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3). Symbol Parameter DRSDI tjit tr,tf Input Data Rate Additive Jitter Output Rise Time, Fall Time Mismatch in Rise/Fall Time Duty Cycle Distortion tOS RLSDO Output Overshoot Output Return Loss Conditions (Note 4) 270 Mbps 20% - 80% (Note 4) (Note 4) (Note 4) (Note 6) 15 20 Reference SDI, SDI SDO, SDO 400 18 560 800 30 100 8 Min Typ Max 540 Units Mbps psP-P ps ps ps % dB Note 1: "Absolute Maximum Ratings" are those parameter values beyond which the life and operation of the device cannot be guaranteed. 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. Note 2: Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated referenced to VEE = 0 Volts. Note 3: Typical values are stated for VCC = +3.3V and TA = +25C. Note 4: Specification is guaranteed by characterization. Note 5: Maximum ICC is measured at VCC = +3.465V and TA = +70C. Note 6: Output return loss is dependent on board design. The LMH0001 meets this specification on the SD001SQ evaluation board from 5MHz to 1.5GHz. www.national.com 2 LMH0001 Connection Diagram 30027205 16-Pin LLP Order Number LMH0001SQ See NS Package Number SQB16A Pin Descriptions SOIC Pin # 1 2 3 4 5 7 8 -- LLP Pin # 1 2 3 4 9 11 12 SDI SDI VEE RREF VCC SDO SDO Name Description Serial data true input. Serial data complement input. Negative power supply (ground). Output driver level control. Connect a resistor to VCC to set output voltage swing. Positive power supply (+3.3V). Serial data complement output. Serial data true output. No connect. 5, 6, 7, 8, NC 10, 13, 14, 15, 16 DAP VEE -- Connect exposed DAP to negative power supply (ground). 3 www.national.com LMH0001 Device Operation INPUT INTERFACING The LMH0001 accepts either differential or single-ended input. The inputs are self-biased, allowing for simple AC or DC coupling. DC-coupled inputs must be kept within the specified common-mode range. SDI and SDI are self-biased at approximately 2.1V with VCC = 3.3V. Figure 1 shows the differential input stage for SDI and SDI. OUTPUT INTERFACING The LMH0001 uses current mode outputs. Single-ended output levels are 800 mVP-P into 75 AC-coupled coaxial cable (with RREF = 750). Output level is controlled by the value of the RREF resistor connected between the RREF pin and VCC. The RREF resistor should be placed as close as possible to the RREF pin. In addition, the copper in the plane layers below the RREF network should be removed to minimize parasitic capacitance. 30027204 FIGURE 1. Differential Input Stage for SDI and SDI. www.national.com 4 LMH0001 Physical Dimensions inches (millimeters) unless otherwise noted 16-Pin LLP Order Number LMH0001SQ NS Package Number SQB16A 5 www.national.com LMH0001 SMPTE 259M / 344M Serial Digital Cable Driver Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers Audio Clock Conditioners Data Converters Displays Ethernet Interface LVDS Power Management Switching Regulators LDOs LED Lighting PowerWise Serial Digital Interface (SDI) Temperature Sensors Wireless (PLL/VCO) www.national.com/amplifiers www.national.com/audio www.national.com/timing www.national.com/adc www.national.com/displays www.national.com/ethernet www.national.com/interface www.national.com/lvds www.national.com/power www.national.com/switchers www.national.com/ldo www.national.com/led www.national.com/powerwise www.national.com/sdi www.national.com/tempsensors www.national.com/wireless WEBENCH Analog University App Notes Distributors Green Compliance Packaging Design Support www.national.com/webench www.national.com/AU www.national.com/appnotes www.national.com/contacts www.national.com/quality/green www.national.com/packaging www.national.com/quality www.national.com/refdesigns www.national.com/feedback Quality and Reliability Reference Designs Feedback THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION ("NATIONAL") PRODUCTS. NATIONAL MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE CHANGES TO SPECIFICATIONS AND PRODUCT DESCRIPTIONS AT ANY TIME WITHOUT NOTICE. NO LICENSE, WHETHER EXPRESS, IMPLIED, ARISING BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. TESTING AND OTHER QUALITY CONTROLS ARE USED TO THE EXTENT NATIONAL DEEMS NECESSARY TO SUPPORT NATIONAL'S PRODUCT WARRANTY. EXCEPT WHERE MANDATED BY GOVERNMENT REQUIREMENTS, TESTING OF ALL PARAMETERS OF EACH PRODUCT IS NOT NECESSARILY PERFORMED. NATIONAL ASSUMES NO LIABILITY FOR APPLICATIONS ASSISTANCE OR BUYER PRODUCT DESIGN. BUYERS ARE RESPONSIBLE FOR THEIR PRODUCTS AND APPLICATIONS USING NATIONAL COMPONENTS. PRIOR TO USING OR DISTRIBUTING ANY PRODUCTS THAT INCLUDE NATIONAL COMPONENTS, BUYERS SHOULD PROVIDE ADEQUATE DESIGN, TESTING AND OPERATING SAFEGUARDS. EXCEPT AS PROVIDED IN NATIONAL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, NATIONAL ASSUMES NO LIABILITY WHATSOEVER, AND NATIONAL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO THE SALE AND/OR USE OF NATIONAL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: Life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness. National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. Copyright(c) 2007 National Semiconductor Corporation For the most current product information visit us at www.national.com National Semiconductor Americas Customer Support Center Email: new.feedback@nsc.com Tel: 1-800-272-9959 National Semiconductor Europe Customer Support Center Fax: +49 (0) 180-530-85-86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +49 (0) 870 24 0 2171 Francais Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Support Center Email: ap.support@nsc.com National Semiconductor Japan Customer Support Center Fax: 81-3-5639-7507 Email: jpn.feedback@nsc.com Tel: 81-3-5639-7560 www.national.com |
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