dual-channel, 14-bit hd image signal processor with precision timing core ad9978a rev. spa information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2008C2010 analog devices, inc. all rights reserved. features dual afe channels 1.8 v analog and digital core supply voltage serial data output with reduced range lvds outputs differential analog inputs cds or sha configuration (cds bypass) with ?3 db, 0 db, +3 db, and +6 db gain 6 db to 42 db, 10-bit variable gain amplifier (vga) 14-bit, 75 mhz analog-to-digital converter (adc) black level clamp with variable level control precision timing core with 210 ps resolution @ 75 mhz applications digital video cameras digital still cameras digital copiers multifunction printers high speed industrial cameras general description the ad9978a is a highly integrated, dual-channel, charge- coupled device (ccd) signal processor for high speed digital video camera applications. each channel is specified at pixel rates of up to 75 mhz and consists of a complete analog front end (afe) with adc conversion. the precision timing ? core allows adjustment of the correlated double sampler (cds) and sample-and-hold amplifier (sha) clocks with 210 ps resolution at 75 mhz operation. the ad9978a also contains a reduced range low voltage differential signaling (lvds) interface for the dual- channel data outputs. each analog front end includes black level clamping, a cds, a vga, and a 75 mhz, 14-bit analog-to-digital converter (adc). operation is programmed using a 3-wire serial interface. packaged in a space-saving, 6 mm 6 mm, 40-lead lfcsp, the ad9978a is specified over an operating temperature range of ?25c to +85c. functional block diagram inp_a inm_a inm_b inp_b ?3db, 0db, +3db, +6db ?3db, 0db, +3db, +6db cds/ sha vga 6db to 42db clamp adc vd hd sdata sck cli clk_out dout0p dout0n dout1p dout1n dout2p dout2n dout3p dout3n tclkp tclkn sl clamp vref adc 6db to 42db cds/ sha vga precision timing core sync generator internal clocks internal registers lvds serializer ad9978a 07751-001 figure 1. for more information about the ad9978a, contact analog devices, inc., at afe.ccd@analog.com .
ad9978a rev. spa | page 2 of 2 notes ?2008C2010 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. d07751f-0-1/10(spa)
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