GS9077-CNTE3

GS9077 GS9077 HD-LINX® III SD-SDI Cable Driver Features Description • SMPTE 344M and SMPTE 259M compliant • Dual coaxial cable driving outputs The GS9077 is a high-speed BiCMOS integrated circuit designed to drive one or two 75Ω co-axial cables. • Selectable power down mode • 50Ω differential PECL input • Pb-free/Halogen-free/RoHS & WEEE compliant • Seamless interface to other HD-LINX® III family products • Single 3.3V power supply operation • Operating temperature range: 0°C to 70°C The GS9077 may drive data rates up to 540Mb/s and provides a disable pin that may be used to power down the output stage. The GS9077 accepts a LVPECL level differential input that may be AC coupled. External biasing resistors at the inputs are not required. Power consumption is typically 168mW using a 3.3V power supply. The GS9077 is Pb-free, and the encapsulation compound does not contain halogenated flame retardant. Applications • SMPTE 344M and SMPTE 259M Coaxial Cable Serial Digital Interfaces. This component and all homogeneous subcomponents are RoHS compliant. BANDGAP REFERENCE AND BIASING CIRCUIT DDI DDI INPUT DIFFERENTIAL PAIR OUTPUT STAGE & CONTROL RSET SDO SDO DISABLE GS9077 Functional Block Diagram GS9077 Final Data Sheet GENDOC-044619 www.semtech.com Rev.1 May 2019 1 of 14 Semtech Proprietary & Confidential Revision History Version ECO/ECR PCN Date Changes and/or Modifications 1 046907 — May 2019 Updated document format. 0 144889 — May 2007 New document. Contents 1. Pin Out.................................................................................................................................................................3 1.1 Pin Assignment ...................................................................................................................................3 1.2 Pin Descriptions ..................................................................................................................................3 2. Electrical Characteristics................................................................................................................................4 2.1 Absolute Maximum Ratings ...........................................................................................................4 2.2 DC Electrical Characteristics ...........................................................................................................4 2.3 AC Electrical Characteristics ............................................................................................................5 3. Input / Output Circuits...................................................................................................................................6 4. Detailed Description.......................................................................................................................................7 4.1 Input Interfacing .................................................................................................................................7 4.2 Output Interfacing .............................................................................................................................7 4.2.1 Output Amplitude (RSET) ....................................................................................................8 4.2.2 Output Disable ........................................................................................................................8 4.3 Output Return Loss Measurement ...............................................................................................8 5. Application Information................................................................................................................................9 5.1 PCB Layout ............................................................................................................................................9 5.2 Typical Application Circuit ..............................................................................................................9 6. Package & Ordering Information ............................................................................................................ 10 6.1 Package Dimensions ...................................................................................................................... 10 6.2 Recommended PCB Footprint .................................................................................................... 11 6.3 Packaging Data ................................................................................................................................ 11 6.4 Solder Reflow Profiles .................................................................................................................... 12 6.5 Marking Diagram ............................................................................................................................. 13 6.6 Ordering Information ..................................................................................................................... 13 GS9077 Final Data Sheet GENDOC-044619 www.semtech.com Rev.1 May 2019 2 of 14 Semtech Proprietary & Confidential 1. Pin Out DDI 1 DDI 2 NC NC NC NC 1.1 Pin Assignment 16 15 14 13 12 SDO 11 SDO GS9077 (top view) VEE 3 10 NC RSET 4 9 VCC 7 8 Center Pad (bottom of package) NC RSVD 6 DISABLE NC 5 Figure 1-1: 16-Pin QFN 1.2 Pin Descriptions Table 1-1: Pin Descriptions Pin Number Name Timing Type Description 1,2 DDI, DDI Analog Input Serial digital differential input. 3 VEE — Power Most negative power supply connection. Connect to GND. 4 RSET Analog Input External output amplitude control resistor. 5,8,10,13,14, 15,16 NC — — 6 DISABLE Non Synchronous Input 7 RSVD — Reserved 9 VCC — Power Most positive power supply connection. Connect to +3.3V. 11,12 SDO,SDO Analog Output Serial digital differential output. — Center Pad — Power Connect to most negative power supply plane following the recommendations in Recommended PCB Footprint on page 11. GS9077 Final Data Sheet GENDOC-044619 No Connect. Not bonded internally. Serial output disable. When asserted LOW, the SDO/SDO output driver is powered off. SDO/SDO will float to VCC through the pull-up resistor. Do not connect. www.semtech.com Rev.1 May 2019 3 of 14 Semtech Proprietary & Confidential 2. Electrical Characteristics 2.1 Absolute Maximum Ratings Parameter Value Supply Voltage -0.5V to 3.6 VDC Input ESD Voltage 4kV Storage Temperature Range -50°C < TS < 125°C Input Voltage Range (any input) -0.3 to (VCC +0.3)V Operating Temperature Range 0°C to 70°C Solder Reflow Temperature 260°C NOTE: Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions or at any other condition beyond those indicated in the AC/DC Electrical Characteristic sections is not implied. 2.2 DC Electrical Characteristics Table 2-1: DC Electrical Characteristics VCC = 3.3V ±5%; TA = 0°C to 70°C, unless otherwise shown Parameter Supply Voltage Power Consumption Symbol Conditions Min Typ Max Units VCC — 3.135 3.3 3.465 V TA = 25°C, SDO/SDO enabled — 168 — mW TA = 25°C, SDO/SDO disabled — 96 — mW TA = 25°C, SDO/SDO enabled — 51 — mA TA = 25°C, SDO/SDO disabled — 29 — mA VCMOUT Common mode — VCC - VOUT — V VCMIN Common mode 1.4 + VDDI/2 — VCC - VDDI/2 V VIH IIH