GS9077

GS9077 HD-LINX® III SD-SDI Cable Driver GS9077 Data Sheet Features • • • • • • • • SMPTE 344M and SMPTE 259M compliant Dual coaxial cable driving outputs Selectable power down mode 50Ω differential PECL input Pb-free and RoHS compliant Seamless interface to other HD-LINX® III family products Single 3.3V power supply operation Operating temperature range: 0°C to 70°C Description The GS9077 is a high-speed BiCMOS integrated circuit designed to drive one or two 75Ω co-axial cables. 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. This component and all homogeneous subcomponents are RoHS compliant. Applications • SMPTE 344M and SMPTE 259M Coaxial Cable Serial Digital Interfaces. BANDGAP REFERENCE AND BIASING CIRCUIT RSET DDI DDI INPUT DIFFERENTIAL PAIR SDO OUTPUT STAGE & CONTROL SDO DISABLE Functional Block Diagram 44619 - 0 May 2007 1 of 14 www.gennum.com GS9077 Data Sheet Contents Features ........................................................................................................................1 Applications...................................................................................................................1 Description ....................................................................................................................1 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 2.4 Solder Reflow Profiles .....................................................................................6 3. Input / Output Circuits ...............................................................................................7 4. Detailed Description ..................................................................................................8 4.1 Input Interfacing ..............................................................................................8 4.2 Output Interfacing ...........................................................................................8 4.2.1 Output Amplitude (RSET) ......................................................................9 4.2.2 Output Disable .......................................................................................9 4.3 Output Return Loss Measurement ..................................................................9 5. Application Information............................................................................................10 5.1 PCB Layout ...................................................................................................10 5.2 Typical Application Circuit .............................................................................10 6. Package & Ordering Information .............................................................................11 6.1 Package Dimensions ....................................................................................11 6.2 Recommended PCB Footprint ......................................................................12 6.3 Packaging Data .............................................................................................12 6.4 Marking Diagram ...........................................................................................13 6.5 Ordering Information .....................................................................................13 7. Revision History ......................................................................................................14 44619 - 0 May 2007 2 of 14 GS9077 Data Sheet 1. Pin Out 1.1 Pin Assignment NC NC NC NC 13 12 SDO 11 GS9077 (top view) VEE 3 10 NC 16 DDI 1 15 14 DDI 2 SDO RSET 4 5 NC 6 DISABLE 7 RSVD 8 9 VCC Center Pad (bottom of package) Figure 1-1: 16-Pin QFN 1.2 Pin Descriptions Table 1-1: Pin Descriptions Pin Number 1,2 3 4 5,8,10,13,14, 15,16 6 Name DDI, DDI VEE RSET NC DISABLE Timing Analog – Analog – Non Synchronous – – Analog – Type Input Power Input – Input Description Serial digital differential input. Most negative power supply connection. Connect to GND. External output amplitude control resistor. 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. Most positive power supply connection. Connect to +3.3V. Serial digital differential output. Connect to most negative power supply plane following the recommendations in Recommended PCB Footprint on page 12. 7 9 11,12 – RSVD VCC SDO, SDO Center Pad Reserved Power Output Power 44619 - 0 May 2007 NC 3 of 14 GS9077 Data Sheet 2. Electrical Characteristics 2.1 Absolute Maximum Ratings Parameter Supply Voltage Input ESD Voltage Storage Temperature Range Input Voltage Range (any input) Operating Temperature Range Solder Reflow Temperature Value -0.5V to 3.6 VDC 4kV -50°C < Ts < 125°C -0.3 to (VCC +0.3)V 0°C to 70°C 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 VCC PD Conditions – TA = 25°C, SDO/SDO enabled TA = 25°C, SDO/SDO disabled Min 3.135 – Typ 3.3 168 Max 3.465 – Units V mW – 96 – mW Supply Current Is TA = 25°C, SDO/SDO enabled TA = 25°C, SDO/SDO disabled – 51 – mA – 29 – mA Output Voltage Input Voltage DISABLE Input VCMOUT VCMIN VIH VIL Common mode Common mode IIH