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LMH0303 Dataheets PDF



Part Number LMH0303
Manufacturers National Semiconductor
Logo National Semiconductor
Description 3 Gbps HD/SD SDI Cable Driver
Datasheet LMH0303 DatasheetLMH0303 Datasheet (PDF)

LMH0303 3 Gbps HD/SD SDI Cable Driver with Cable Detect www.DataSheet4U.com PRELIMINARY July 10, 2008 LMH0303 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 applications. The LMH0303 drives 75Ω transmission lines (Belden 1694A, Belden 8281, or equivalent) at data rates up to 2.97 Gbps. The LMH0303 includes intelligent s.

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LMH0303 3 Gbps HD/SD SDI Cable Driver with Cable Detect www.DataSheet4U.com PRELIMINARY July 10, 2008 LMH0303 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 applications. 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 improve system diagnostics. The cable detect feature senses near-end termination to determine if a cable is correctly attached 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 3 mW. These features are accessible via an SMBus interface. The LMH0303 provides two selectable slew rates for SMPTE 259M and SMPTE 424M / 292M compliance. The output amplitude 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 package. The LMH0303 interfaces with National's LMH0356 for additional system control and power consumption savings (see Typical Application). Features ■ SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M compliant Data rates to 2.97 Gbps 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 Applications ■ SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M serial digital interfaces ■ Digital video routers and switches ■ Distribution amplifiers Typical Application 30043203 © 2008 National Semiconductor Corporation 300432 www.national.com LMH0303 www.DataSheet4U.com 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  θJA 16-pin LLP  θJC 16-pin LLP −0.5V to 3.6V −0.3V to VCC+0.3V 28 mA −65°C to +150°C +125°C +260°C +43°C/W +7°C/W ESD Rating (HBM) ESD Rating (MM) ESD Rating (CDM) 8 kV 400V 2 kV Recommended Operating Conditions Supply Voltage (VCC – VEE): Operating Free Air Temperature (TA) 3.3V ±5% −40°C to +85°C DC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Notes 2, 3). Symbol Parameter VCMIN VSDI VCMOUT VSDO VIH VIL ICC Input Common Mode Voltage Input Voltage Swing Output Common Mode Voltage Output Voltage Swing Input Voltage High Level InputVoltage Low Level Supply Current SD/HD = 0, SDO/SDO enabled SD/HD = 1, SDO/SDO enabled SDO/SDO disabled SMBus DC Specifications VSIL VSIH ISPULLUP VSDD ISLEAKB ISLEAKP CSI Data, Clock Input Low Voltage Data, Clock Input High Voltage Current through pullup resistor or VOL = 0.4 V current source Nominal Bus Voltage Input Leakage per bus segment Input Leakage per pin Capacitance for SDA and SCL (Notes 6, 7) (Note 6) 2.1 4 3.0 −200 −10 3.6 200 10 10 0.8 VSDD V V mA V µA µA pF Single-ended, 75Ω load, RREF = 750Ω 1% SD/HD, ENABLE Differential SDO, SDO Conditions Reference SDI, SDI Min 1.6 + VSDI/2 100 VCC – VSDO 720 2.0 0.8 47 40 1.3 57 47 2.5 800 880 Typ Max VCC – VSDI/2 2200 Units V mVP−P V mVP-P V V mA mA mA www.national.com 2 LMH0303 www.DataSheet4U.com AC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3). Conditions 2.97 Gbps 1.485 Gbps 270 Mbps Reference SDI, SDI SDO, SDO 20 18 15 90 400 130 800 30 SD/HD = 0, 2.97 Gbps, (Note 4) SD/HD = 0, 1.485 Gbps, (Note 4) SD/HD = 1, (Note 4) 27 30 100 10 8 15 10 10 4.7 At ISPULLUP = MAX 4.0 µs 100 Min Typ Max 2970 Units Mbps psP-P psP-P psP-P ps ps ps ps ps ps % % dB dB kHz µs Input Data Rate Additive Jitter Symbol Parameter DRSDI tjit tr,tf Output Rise Time, Fall Time Mismatch in Rise/Fall Time Duty Cycle Distortion SD/HD = 0, 20% – 80%, SD/HD = 1, 20% – 80% tOS RLSDO Output Overshoot Output Return Loss SD/HD = 0, (Note 4) SD/HD = 1, (Note 4) 5 MHz - 1.5 GHz, (Note 5) 1.5 GHz - 3.0 GHz, (Note 5) SMBus AC Specifications fSMB tBUF tHD:STA Bus Operating Frequency Bus free time between Stop and Start Condition Hold time after (repeated) Start Condition. After this period, the first clock is generated. Repeated Start Condition setup time Stop Condition setup time Data hold time Data setup time Clock low period Clock high period Clock/Data Fall Time Clock/Data Rise Time Time in wh.


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