GB4570 Datasheet | Gennum

FEATURES - accurate sync tip clamping (± 2 m V typical) - less than 1 m V clamping distortion - variable clamping voltage (VEE + 3 V to VCC -4.5 V) .. DESCRIPTION The GB4570 is a high performance video buffer/clamp used primarily for sync tip clamping of video signals. Key features include operation from ± 4.5 to ± 13.2 V supply voltages, ± 0.1 d B flatness to 80 MHz and availability of industry standard DIP and SOIC packages. In a typical video application, the GB4570 clamps the sync tip to a known voltage. The clamping level can be set for normal sync tip clamping by connecting pin 3 to - 0.286 volts. For applications requiring non-standard sync tip clamping, the clamping voltage applied to pin 3 may be varied. The GB4570 features a tight delay spread of only ± 0.15° at color burst frequencies and less than ± 1 millivolts clamping distortion. - ultra low differential gain and differential phase - less than ± 0.15° phase delay variation at 3.58 MHz - ± 0.1 d B flatness to 80 MHz - ± 4.5 to ±13.2 V supply voltage range PIN CONNECTIONS GB4570 GND V IN V CLAMP CHOLD 1 2 3 4 8 7 6 5 VCC VOUT VEE NC APPLICATIONS - - - Sync tip clamping of NTSC, PAL, SECAM and RGB Video Signals Input buffering and clamping Inter-system video signal clamping SIMPLIFIED CIRCUIT DIAGRAM VCC 8 AVAILABLE PACKAGING 8 pin PDIP 8 pin SOIC VIN COUPLING CAP 2 7 VOUT ORDERING INFORMATION Part Number Package Temperature Range 6 50k + GB4570-CDA GB4570-CKA GB4570-CTA 8 pin PDIP 8 pin SOIC 0° to 70° C 0° to 70° C 8 pin SOIC Tape 0° to 70° C 3 VCLAMP 4 CHOLD Document No. 521 - 18 - 01 GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-2055 Japan Branch: A-302, Miyamae Village, 2-10-42, Miyamae, Suginami-ku, Tokyo 168, Japan tel. (03) 3247-8838 fax. (03) 3247-8839 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Operating Temperature Range Storage Temperature Range Lead Temperature (soldering, 10 seconds) Differential Video...