Dual-Channel, 14-Bit CCD Signal Processor with Precision Timing Core AD9978 FEATURES GENERAL DESCRIPTION Dual AFE channels The AD9978 is a highly integrated, dual-channel CCD signal 1.8 V analog and digital core supply voltage processor for high speed digital video camera applications. Serial data output with reduced range LVDS outputs Each channel is specified at pixel rates of up to 65 MHz and Differential analog inputs consists of a complete analog front end with ADC conversion. The CDS or SHA configuration (CDS bypass) with Precision Timing core allows adjustment of the correlated 3 dB, 0 dB, +3 dB, and +6 dB gain double sampler (CDS) and sample-and-hold amplifier (SHA) 6 dB to 42 dB, 10-bit variable gain amplifier (VGA) clocks with 240 ps resolution at 65 MHz operation. The 14-bit, 65 MHz analog-to-digital converter (ADC) AD9978 also contains a reduced range, low voltage differential Black level clamp with variable level control signaling (LVDS) interface for the dual-channel data outputs. Precision Timing core with 240 ps resolution 65 MHz Each analog front end includes black level clamping, a CDS, a VGA, and a 65 MHz, 14-bit ADC. Operation is programmed APPLICATIONS using a 3-wire serial interface. Digital video cameras Digital still cameras Packaged in a space-saving, 6 mm 6 mm, 40-lead LFCSP, the Digital copiers AD9978 is specified over an operating temperature range of Multifunction printers 25C to +85C. High speed industrial cameras FUNCTIONAL BLOCK DIAGRAM AD9978 VREF 6dB TO 42dB INP A DOUT0P CDS/ VGA ADC DOUT0N SHA INM A DOUT1P DOUT1N 3dB, 0dB, +3dB, +6dB CLAMP LVDS TCLKP SERIALIZER TCLKN 3dB, 0dB, +3dB, +6dB CLAMP DOUT2P 6dB TO 42dB DOUT2N INP B DOUT3P CDS/ VGA ADC DOUT3N SHA INM B INTERNAL CLOCKS PRECISION CLK OUT TIMING CLI CORE SYNC INTERNAL GENERATOR REGISTERS HD VD SL SDATA SCK Figure 1. For more information about the AD9978, contact Analog Devices via email at afe.ccd analog.com. Rev. SpC 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. Tel: 781.329.4700 www.analog.com No license is granted by implication or otherwise under any patent or patent rights of Analog Fax: 781.461.3113 20072020 Analog Devices, Inc. All rights reserved. Devices. Trademarks and registered trademarks are the property of their respective owners. 0 68 10 -00 1AD9978 NOTES 20072020 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06810F-8/20(SpC) Rev. SpC Page 2 of 2