LMH0002_08 NSC | Alldatasheet
Document overview
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Technical content
Features
■ SMPTE 292M, SMPTE 344M and SMPTE 259M compliant ■ Supports DVB-ASI at 270 Mbps ■ Data rates to 1.485 Gbps ■ Differential input ■ 75Ω differential output ■ Selectable slew rate ■ Adjustable output amplitude ■ Single 3.3V supply operation ■ Operating temperature range: Commercial 0°C to +70°C (LMH0002MA) or Industrial −40°C to +85°C (LMH0002TMA and LMH0002SQ) ■ Typical power consumption: 125 mW in SD mode and 149 mW in HD mode ■ 8–pin SOIC or 16–pin LLP package ■ Replaces the GS1528, GS1528A, or GS1578A.
Applications
■ SMPTE 292M, SMPTE 344M, and SMPTE 259M serial digital interfaces ■ Sonet/SDH and ATM interfaces ■ Digital routers and switches ■ Distribution amplifiers ■ Buffer applications ■ Set top boxes ■ Security cameras Typical Application 20176102 © 2008 National Semiconductor Corporation 201761 www.national.com LMH0002 SMPTE 292M / 259M Serial Digital Cable Driver
Absolute Maximum Ratings (Note 1) Supply Voltage: −0.5V to 3.6V Input Voltage (all inputs) −0.3V to VCC+0.3V Output Current 28 mA Storage Temperature Range −65°C to +150°C Junction Temperature +150°C Lead Temperature (Soldering 4 Sec) +260°C Package Thermal Resistance θJA 8-pin SOIC θJA 16-pin LLP θJC 8-pin SOIC θJC 16-pin LLP +160°C/W +78.9°C/W +105°C/W +42.7°C/W ESD Rating (HBM) 5kV ESD Rating (MM) 250V Recommended Operating Conditions Supply Voltage (VCC – VEE): 3.3V ±5% Operating Free Air Temperature (TA) LMH0002MA LMH0002TMA, LMH0002SQ 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 mVP−P VCMOUT Output Common Mode Voltage SDO, SDO VCC – VSDO V VSDO Output Voltage Swing Single-ended, 75Ω load,RREF = 750Ω 1% 750 800 850 mVP-P Single-ended, 75Ω load,RREF = 590Ω 1% 900 1000 1100 mVP-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 psP-P
270 Mbps 18 psP-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 Duty Cycle Distortion SD/HD = 0, (Note 4) 30 ps SD/HD = 1, (Note 4) 100 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. www.national.com 2 LMH0002
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. Connection Diagrams 20176101 8-Pin SOIC Order Number LMH0002MA or LMH0002TMA See NS Package Number M08A 20176105 16-Pin LLP Order Number LMH0002SQ See NS Package Number SQB16A Pin Descriptions SOIC Pin # LLP Pin # Name Description 1 1 SDI Serial data true input. 2 2 SDI Serial data complement input. 3 3 VEE Negative power supply (ground). 4 4 RREF Output driver level control. Connect a resistor to VCC to set output voltage swing. 5 9 VCC Positive power supply (+3.3V). 6 10 SD/HD Output slew rate control. Output rise/fall time complies with SMPTE 292M when low and SMPTE 259M when high. 7 11 SDO Serial data complement output. 8 12 SDO Serial data true output. — 5, 6, 7, 8, 13, 14, 15, NC No connect. — DAP VEE Connect exposed DAP to negative power supply (ground). 3 www.national.com LMH0002
ential input stage for SDI and SDI. FIGURE 1. Differential Input Stage for SDI and SDI. the RREF resistor connected between the RREF pin and VCC. SMPTE 292M compliance, SD/HD is set low. fit-function compatible with the Gennum GS1578A.
Physical Dimensions inches (millimeters) unless otherwise noted 8-Pin SOIC Order Number LMH0002MA or LMH0002TMA 16-Pin LLP Order Number LMH0002SQ 5 www.national.com LMH0002
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