|Category||Interface and Interconnect => Multiprotocol|
|Description||3 Gbps HD/SD SDI Extended Reach And Configurable Adaptive Cable Equalizer
The LMH0384 3 Gbps HD/SD SDI Extended Reach and Configurable Adaptive Cable Equalizer is designed to equalize data transmitted over cable (or any media with similar dispersive loss characteristics). The equalizer operates over a wide range of data rates from 143 Mbps to 2.97 Gbps and supports SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M standards.
The LMH0384 includes active sensing features and design enhancements including longer cable equalization, lower output jitter, configurable pin mode and SPI modes, a power-saving sleep mode, and programmable output common mode voltage and swing. The LMH0384 implements DC restoration to correctly handle pathological data conditions.
The LMH0384 includes an auto sleep mode to power down the device when no input signal is detected. Other features include separate carrier detect and output mute pins which may be tied together to mute the output when no input signal is present, and a programmable mute reference which may be used to mute the output at a selectable level of signal degradation.
The LMH0384 supports two modes of operation. In pin mode (non-SPI mode) the LMH0384 is footprint compatible with the LMH0344 and legacy SDI equalizers. In the optional SPI mode, the LMH0384 provides register access to all of its features along with a cable length indicator, programmable output common mode voltage and swing, and launch amplitude optimization.
|Company||National Semiconductor Corporation|
|Datasheet||Download LMH0384 datasheet
|Cross ref.||Similar parts: LMH0044SQ, LMH0044SQ/NOPB, LMH0044SQE, LMH0044SQE/NOPB, LMH0044SQX, LMH0044SQX/NOPB, LMH0074SQ, LMH0074SQ/NOPB, LMH0074SQE, LMH0074SQE/NOPB|
|LMH0384 3 Gbps HD/SD SDI Extended Reach and Configurable Adaptive Cable Equalizer
3 Gbps HD/SD SDI Extended Reach and Configurable Adaptive Cable Equalizer
The LMH0384 3 Gbps HD/SD SDI Extended Reach and Configurable Adaptive Cable Equalizer is designed to equalize data transmitted over cable (or any media with similar dispersive loss characteristics). The equalizer operates over a wide range of data rates from 143 Mbps to 2.97 Gbps and supports SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M standards. The LMH0384 includes active sensing features and design enhancements including longer cable equalization, lower output jitter, configurable pin mode and SPI modes, a powersaving sleep mode, and programmable output common mode voltage and swing. The LMH0384 implements DC restoration to correctly handle pathological data conditions. The LMH0384 includes an auto sleep mode to power down the device when no input signal is detected. Other features include separate carrier detect and output mute pins which may be tied together to mute the output when no input signal is present, and a programmable mute reference which may be used to mute the output at a selectable level of signal degradation. The LMH0384 supports two modes of operation. In pin mode (non-SPI mode) the LMH0384 is footprint compatible with the LMH0344 and legacy SDI equalizers. In the optional SPI mode, the LMH0384 provides register access to all of its features along with a cable length indicator, programmable output common mode voltage and swing, and launch amplitude optimization. The device is available a 16-pin LLP package.Features
Supports DVB-ASI at 270 Mbps Wide range of data rates: 143 Mbps to 2.97 Gbps Equalizes to 140 meters of Belden at 2.97 Gbps,
to 200 meters of Belden at 1.485 Gbps, to 400 meters of Belden at 270 Mbps Power save mode with auto sleep control (35 mW typical power consumption in power save mode) Optional SPI register access Manual bypass and output mute with a programmable threshold Internally terminated 100 LVDS outputs with SPI programmable output common mode voltage and swing Programmable launch amplitude optimization in SPI mode Cable length indicator in SPI mode Single 3.3V supply operation 16-pin LLP package Industrial temperature range: to +85°C Footprint compatible with the LMH0344, LMH0044, and LMH0074 in pin mode.Applications
Serial digital data equalization and reception Data recovery equalization
Supply Voltage Input Voltage (all inputs) Storage Temperature Range Junction Temperature Lead Temperature (Soldering 4 Sec) Package Thermal Resistance JA 16-pin LLP JC 16-pin LLP ESD Rating (HBM) ESD Rating (MM) ESD Rating (CDM) +40°C/W +6°C/W
Supply Voltage (VCC VEE) Input Coupling Capacitance AEC Capacitor (Connected between AEC+ and AEC-) Operating Free Air Temperature (TA) to +85°C
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Notes 2, 3). Symbol Parameter VIH VIL VSDI VCMIN VSSP-P VOD VOS IOS Input Voltage High Level Input Voltage Low Level Input Voltage Swing Input Common Mode Voltage Differential Output Voltage, P-P Differential Output Voltage Change in Magnitude of VOD for Complimentary Output States Offset Voltage Change in Magnitude of VOS for Complimentary Output States Output Short Circuit Current MUTEREF DC Voltage (floating) MUTEREF Range CD Output Voltage VOH VOL ICC Output Voltage High Level Output Voltage Low Level Supply Current Carrier not present Carrier present IOH 2 mA IOL 2 mA Normal operation, equalizing cable < 140m (Belden 1694A) Normal operation, equalizing cable > 140m (Belden 1694A) Power save mode 90 10 MISO 2.4 0.4 MUTEREF load, default values (Note 6), Figure 1 SDO, SDO 250 0m cable length, (Note 5) SDI, SDI Conditions Reference Logic Inputs Min 2.0 VEE Typ Max VCC 0.8 950 Units V mVP-P V mVP-P mV mA
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3). Symbol Parameter BRSDI Input Data Rate Jitter for Various Cable Lengths 270 Mbps, Belden 1694A, 0-350 meters (Note 7) 270 Mbps, Belden 1694A, 350-400 meters 1.485 Gbps, Belden 1694A, 0-170 meters (Note 7) 1.485 Gbps, Belden 1694A, 170-200 meters 2.97 Gbps, Belden 1694A, 0-110 meters (Note 7) 2.97 Gbps, Belden 1694A, 110-140 meters tr,tf tOS RLIN RIN CIN Output Rise Time, Fall Time Mismatch in Rise/Fall Time Output Overshoot Input Return Loss Input Resistance Input Capacitance 80%, (Note 4), Figure 1 SDO, SDO (Note 4) (Note 4) 5 MHz - 1.5 GHz, (Note 8) 1.5 GHz - 3.0 GHz, (Note 8) single-ended SDI, SDI Conditions Reference SDI, SDI Min 143 Typ Max 2970 0.2 Units Mbps k pF
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3). Symbol Parameter fSCK tPH tPL tSU tH tSSSU tSSH tSSOF tODZ tOZD tOD SCK Frequency SCK Pulse Width High SCK Pulse Width Low MOSI Setup Time MOSI Hold Time SS Setup Time SS Hold Time SS Off Time MISO Driven-to-Tristate Time MISO Tristate-to-Driven Time MISO Output Delay Time Figure 3 MISO Figures 3 SS Figures 2, 3 MOSI Figures 2, 3 Conditions Reference SCK Min Typ Max 20 Units MHz % SCK period % SCK period ns Recommended Input Timing Requirements
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 = +25°C. Note 4: Specification is guaranteed by characterization. Note 5: The LMH0384 can be optimized for different launch amplitudes via the SPI. Note 6: The differential output voltage and offset voltage are adjustable via the SPI. Note 7: Based on design and characterization data over the full range of recommended operating conditions of the device. Jitter is measured in accordance with SMPTE RP 184, SMPTE RP 192, and the applicable serial data transmission standard: SMPTE 424M, SMPTE 292M, or SMPTE 259M.
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