LMH0002 NSC | Alldatasheet

Document overview

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Technical content

Features

n SMPTE 292M, SMPTE 344M and SMPTE 259M compliant n Data rates to 1.485 Gbps n Differential input n 75Ω differential output n Selectable slew rate n Adjustable output amplitude n Single 3.3V supply operation n Operating temperature range: Commercial 0˚C to +70˚C (LMH0002MA) or Industrial −40˚C to +85˚C (LMH0002TMA) n Typical power consumption: 125mW in SD mode and 149mW in HD mode n Replaces the GS1528 and GS1528A

Applications

n SMPTE 292M, SMPTE 344M, and SMPTE 259M serial digital interfaces n Sonet/SDH and ATM interfaces n Digital routers and switches n Distribution amplifiers n Buffer applications n Set top boxes n Security cameras Typical Application 20176102 January 2006 LMH0002 SMPTE 292M / 259M Serial Digital Cable Driver © 2006 National Semiconductor Corporation DS201761 www.national.com

Absolute Maximum Ratings(Note 1) Supply Voltage: −0.5V to 3.6V Input Voltage (all inputs) −0.3V to V CC+0.3V Output Current 28mA Storage Temperature Range −65˚C to +150˚C Junction Temperature +150˚C Lead Temperature (Soldering 4 Sec) +260˚C Package Thermal Resistance θ JA 8-pin SOIC θJC 8-pin SOIC +125˚C/W +105˚C/W ESD Rating (HBM) 5kV ESD Rating (MM) 250V Recommended Operating Conditions Supply Voltage (VCC –V EE): 3.3V ±5% Operating Free Air Temperature (TA) LMH0002MA LMH0002TMA 0˚C to +70˚C −40˚C to +85˚C Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Notes 2, 3). Symbol Parameter Conditions Reference Min Typ Max Units VCMIN Input Common Mode Voltage SDI, SDI 1.6 + VSDI/2 VCC – VSDI/2 V VSDI Input Voltage Swing Differential 100 2000 mV P−P VCMOUT Output Common Mode Voltage SDO, SDO VCC – VSDO V VSDO Output Voltage Swing Single-ended, 75 Ω load, RREF = 750Ω 1% 750 800 850 mV P-P Single-ended, 75Ω load, RREF = 590Ω 1% 900 1000 1100 mV P-P SD/HD Input Voltage Min for SD SD/HD 2.4 V Max for HD 0.8 V SD/HD Input Current 3.7 µA ICC Supply Current SD/HD = 0, (Note 5) 45 49 mA SD/HD = 1, (Note 5) 38 43 mA Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3). Symbol Parameter Conditions Reference Min Typ Max Units DRSDI Input Data Rate (Note 4) SDI, SDI 1485 Mbps tjit Additive Jitter 1.485 Gbps SDO, SDO 26 ps P-P

270 Mbps 18 ps P-P

tr,tf Output Rise Time, Fall Time SD/HD = 0, 20% – 80%, (Note 6) 120 220 ps SD/HD = 1, 20% – 80% 400 560 800 ps Mismatch in Rise/Fall Time (Note 4) 30 ps tOS Output Overshoot (Note 4) 8 % RLSDO Output Return Loss (Note 7) 15 20 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 = +25˚C. Note 4: Specification is guaranteed by characterization. Note 5: Maximum ICC is measured at VCC = +3.465V and TA = +70˚C. Note 6: Specification is guaranteed by characterization and verified by test. Note 7: Output return loss is dependent on board design. The LMH0002 meets this specification on the SD002 evaluation board from 5MHz to 1.5GHz. LMH0002 www.national.com 2

1 SDI Serial data true input.

2 SDI

Serial data complement input. 3V EE Negative power supply (ground). 4R REF Output driver level control. Connect a resistor to VCC to set output voltage swing. 5V CC Positive power supply (+3.3V). 7 SDO Serial data complement output. 8 SDO Serial data true output. differential input stage for SDI and SDI. FIGURE 1. Differential Input Stage for SDI and SDI.

Device Operation (Continued) OUTPUT INTERFACING The LMH0002 uses current mode outputs. Single-ended output levels are 800 mVP-P into 75Ω AC-coupled coaxial cable (with RREF = 750Ω). Output level is controlled by the value of the RREF resistor connected between pin 4 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. OUTPUT SLEW RATE CONTROL The LMH0002 output rise and fall times are selectable for either SMPTE 259M or SMPTE 292M compliance via pin 6, SD/HD. For slower rise and fall times, or SMPTE 259M compliance, SD/HD is set high. For faster rise and fall times, or SMPTE 292M compliance, SD/HD is set low. REPLACING THE GENNUM GS1528 The LMH0002 is form-fit-function compatible with the Gen- num GS1528 and GS1528A. LMH0002 www.national.com 4

Physical Dimensions inches (millimeters) unless otherwise noted 8-Pin SOIC Order Number LMH0002MA or LMH0002TMA National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information visit us at www.national.com. LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems 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. 2. A critical component is any component of 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. BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. Leadfree products are RoHS compliant. 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: +44 (0) 870 24 0 2171 Français 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 LMH0002 SMPTE 292M / 259M Serial Digital Cable Driver