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GS4982-CKA bảng dữ liệu(PDF) 1 Page - Gennum Corporation |
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GS4982-CKA bảng dữ liệu(HTML) 1 Page - Gennum Corporation |
1 / 7 page Document No. 521 - 61 - 01 DATA SHEET GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946 Gennum Japan: Shinjuku Green Tower Building 27F 6-14-1, Nishi Shinjuku Shinjuku-ku, Tokyo 160-0023 Japan Tel: +81 (03) 3349-5501 Fax: +81 (03) 3349-5505 Patent Pending. GS4882, GS4982 Video Sync Separators with 50% Sync Slicing FEATURES DESCRIPTION The GS4882 and GS4982 are precision sync separators for extracting timing information from NTSC, PAL, and SECAM video signals. The GS4882 generates noise immune and temperature stable composite sync, vertical sync, back porch and odd/even field signals. The GS4982 provides a horizontal sync output for those applications requiring horizontal sync extraction. The GS4882 and GS4982 feature an internal color burst filter for minimization of spurious timing information and the reduction of external component count. The precision 50% sync slicing feature embodied in the device provides for superior sync extraction in the presence of noise and varying sync pulse amplitudes. The high performance dual mode input clamp aids in maintaining the accuracy of the internally derived 50% sync slicing level to within ±5% as well in reducing system start-up/recovery time. In addition, a missing pulse detector enables the devices to quickly respond to impulse noise by temporarily turning on a Nosync Recovery Current connected to the dual mode input clamp. The input stage will operate with input signal amplitudes ranging from +0.5 to +4.0V peak to peak with a +5V supply voltage. The GS4882 and GS4982 have robust signal detection and output muting circuitry. Should valid video be removed from the device input, the absence of video will be automatically detected and all outputs muted to a logic high state after a defined probation period. Upon the return of a valid video signal, device outputs are enabled after receiving 8 lines of video. An internal frequency to voltage converter also allows the device to differentiate between valid and invalid input signals by analyzing the horizontal scan rate of the input signal and comparing it against the expected input signal scan rate. The GS4882 and GS4982 are available in standard 8 pin PDIP and SOIC packages, operate with a + 4.5 to +13.2 volt supply voltage range and typically consume less than 6 mA of current with a +5 V supply voltage. • precision 50% sync slicing • internal color burst filter • ±5 ns temperature stability • superior noise immunity • robust signal detection/output muting circuitry • high performance dual mode input clamp • 0.5 V to 4.0 Vpp input signal with +5 V supply • composite, vertical, back porch, odd/even outputs • horizontal sync output available with GS4982 • +4.5 V to +13.2 V supply voltage range • Pb-free and Green R SET GROUND V cc VERTICAL SYNC OUT 1 2 3 4 8 7 6 5 GROUND V cc 1 2 3 4 8 7 6 5 GS4882 VERTICAL SYNC OUT R SET GS4982 ODD/EVEN BACK PORCH BACK PORCH ODD/EVEN PIN CONNECTIONS COMPOSITE SYNC OUT COMPOSITE VIDEO IN HORIZONTAL COMPOSITE VIDEO IN Revision date: July 2004 Part Number Package Temperature Pb-Free Type Range and Green GS4882-CDA 8 pin PDIP 0° C to 70° C No GS4882-CKA 8 pin SOIC 0° C to 70° C No GS4882-CTA 8 pin SOIC Tape 0° C to 70° C No GS4982-CDA 8 pin PDIP 0° C to 70° C No GS4982-CKA 8 pin SOIC 0° C to 70° C No GS4982-CTA 8 pin SOIC Tape 0° C to 70° C No GS4882-CKAE3 8 pin SOIC 0° C to 70° C Yes GS4982-CKAE3 8 pin SOIC 0° C to 70° C Yes ORDERING INFORMATION |
Số phần tương tự - GS4982-CKA |
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Mô tả tương tự - GS4982-CKA |
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