Contents
Features.................................................................................................................................................................1
Applications.........................................................................................................................................................1
Description...........................................................................................................................................................1
Functional Block Diagram ..............................................................................................................................2
Revision History .................................................................................................................................................2
1. Pin Out...............................................................................................................................................................4
1.1 GS2975A Pin Assignment ..............................................................................................................4
1.2 GS2975A Pin Descriptions .............................................................................................................5
2. Electrical Characteristics ............................................................................................................................8
2.1 Absolute Maximum Ratings ..........................................................................................................8
2.2 DC Electrical Characteristics ........................................................................................................8
2.3 AC Electrical Characteristics ..................................................................................................... 10
3. Input/Output Circuits ............................................................................................................................... 13
4. Detailed Description.................................................................................................................................. 16
4.1 Slew Rate Phase Lock Loop (S-PLL) ......................................................................................... 16
4.2 VCO .................................................................................................................................................... 17
4.3 Charge Pump ................................................................................................................................... 17
4.4 Frequency Acquisition Loop — The Phase-Frequency Detector .................................. 18
4.5 Phase Acquisition Loop — The Phase Detector ................................................................... 18
4.6 4:1 Input Mux .................................................................................................................................. 19
4.7 Automatic and Manual Data Rate Selection ......................................................................... 19
4.8 Bypass Mode ................................................................................................................................... 20
4.9 DVB-ASI Operation ....................................................................................................................... 20
4.10 Lock and LOS ................................................................................................................................ 20
4.11 Output Drivers and Output Mute .......................................................................................... 21
5. Typical Application Circuit ..................................................................................................................... 22
6. Package & Ordering Information .......................................................................................................... 23
6.1 Package Dimensions ..................................................................................................................... 23
6.2 Recommended PCB Footprint ................................................................................................... 24
6.3 Packaging Data ............................................................................................................................... 25
6.4 Marking Diagram ........................................................................................................................... 25
6.5 Solder Reflow Profiles .................................................................................................................. 26
6.6 Ordering Information ................................................................................................................... 26
GS2975A HD-LINX® III Multi-Rate SDI Automatic
Reclocker with Dual Differential Outputs
Data Sheet
3 of 27
41487 - 4
April 2009
GENNUM [ GENNUM CORPORATION ]
