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| Dual-Channel, 14-Bit, CCD Signal Processor with Precision TimingTM Core AD9974 FEATURES 1.8 V analog and digital core supply voltage Correlated double sampler (CDS) with -3 dB, 0 dB, +3 dB, and +6 dB gain 6 dB to 42 dB, 10-bit variable gain amplifier (VGA) 14-bit, 65 MHz analog-to-digital converter (ADC) Black level clamp with variable level control Complete on-chip timing generator Precision Timing core with 240 ps resolution @ 65 MHz On-chip 3 V horizontal and RG drivers 100-lead, 9 mm x 9 mm, 0.8 mm pitch, CSP_BGA package Internal LDO regulator circuitry GENERAL DESCRIPTION The AD9974 is a highly integrated, dual-channel CCD signal processor for high speed digital video camera applications. Each channel is specified at pixel rates of up to 65 MHz. The AD9974 consists of a complete analog front end with analog-to-digital conversion combined with a programmable timing driver. The Precision Timing core allows adjustment of high speed clocks with approximately 240 ps resolution at 65 MHz operation. Each analog front end includes black level clamping, CDS, VGA, and a 65 MSPS, 14-bit ADC. The timing driver provides the high speed CCD clock drivers for the RG_A, RG_B, H1_A to H4_A, and H1_B to H4_B outputs. A 3-wire serial interface is used to program each channel of the AD9974. Available in a space-saving, 9 mm x 9 mm, CSP_BGA package, the AD9974 is specified over an operating temperature range of -25C to +85C. For more information on the AD9974, email Analog Devices, Inc. at afe.ccd@analog.com. APPLICATIONS Professional HDTV camcorders Professional/high end digital cameras Broadcast cameras Industrial high speed cameras FUNCTIONAL BLOCK DIAGRAM REFT_A REFB_A REFT_B REFB_B AD9974 CCDINP_A CDS CCDINM_A VREF_A VREF_B 14 VGA ADC 6dB TO 42dB CLAMP CLAMP DOUT_A -3, 0, +3, +6dB CCDINP_B CCDINM_B 1.8V OUTPUT -3, 0, +3, +6dB CDS VGA 6dB TO 42dB ADC 14 DOUT_B LDO A INTERNAL CLOCKS 1.8V OUTPUT LDO B RG_A RG_B H1_A TO H4_A 4 HORIZONTAL DRIVERS PRECISION TIMING CORE CLI_A CLI_B H1_B TO H4_B 4 SYNC GENERATOR INTERNAL REGISTERS SCK_A SCK_B 05955-001 HD_A VD_A HD_B VD_B SL_A SDATA_A SL_B SDATA_B Figure 1. Rev. Sp0 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 (c)2007 Analog Devices, Inc. All rights reserved. AD9974 NOTES (c)2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D005955F-0-2/07(Sp0) Rev. Sp0 | Page 2 of 2 |
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