CCD Signal Processors with a Integrated Timing Driver AD9848/AD9849 FEATURES PRODUCT DESCRIPTION AD9848: 10-Bit, 20 MHz Version The AD9848 and AD9849 are highly integrated CCD signal pro- AD9849: 12-Bit, 30 MHz Version cessors for digital still camera applications. Both include a complete Correlated Double Sampler (CDS) analog front end with A/D conversion, combined with a program- 2 dB to +10 dB Pixel Gain Amplifier (PxGA ) mable timing driver. The Precision Timing core allows adjustment 2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA) of high speed clocks with approximately 1 ns resolution. 10-Bit 20 MHz A/D Converter (AD9848) The AD9848 is specified at pixel rates of 20 MHz, and the 12-Bit 30 MHz A/D Converter (AD9849) AD9849 is specified at 30 MHz. The analog front end includes Black Level Clamp with Variable Level Control black level clamping, CDS, PxGA, VGA, and a 10-bit or 12-bit A/D Complete On-Chip Timing Driver converter. The timing driver provides the high speed CCD clock Precision Timing Core with 1 ns Resolution 20 MSPS drivers for RG and H1H4. Operation is programmed using a On-Chip 3 V Horizontal and RG Drivers (AD9848) 3-wire serial interface. On-Chip 5 V Horizontal and RG Drivers (AD9849) Packaged in a space saving 48-lead LQFP, the AD9848 and 48-Lead LQFP Package AD9849 are specified over an operating temperature range of APPLICATIONS 20C to +85C. Digital Still Cameras FUNCTIONAL BLOCK DIAGRAM VRT VRB VREF 4 6dB 2dB TO 36dB 10 OR 12 CDS DOUT PxGA VGA ADC CCDIN CLAMP CLAMP INTERNAL CLOCKS CLPOB CLPDM PBLK RG PRECISION HORIZONTAL TIMING CLI DRIVERS 4 CORE H1H4 SYNC INTERNAL AD9848/AD9849 GENERATOR REGISTERS HD VD SL SCK SDATA PxGA is a registered trademark and Precision Timing is a trademark of Analog Devices, Inc. REV. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. use, nor for any infringements of patents or other rights of third parties that Tel: 781/329-4700 www.analog.com may result from its use. No license is granted by implication or otherwise Fax: 781/326-8703 2003 Analog Devices, Inc. under any patent or patent rights of Analog Devices.SPECIFICATIONS AD9848/AD9849 GENERAL SPECIFICATIONS Parameter Min Typ Max Unit TEMPERATURE RANGE Operating 20 +85 C Storage 65 +150 C MAXIMUM CLOCK RATE AD9848 20 MHz AD9849 30 MHz POWER SUPPLY VOLTAGE, AD9848 Analog (AVDD1, 2, 3) 2.7 3.6 V Digital1 (DVDD1) H1H4 2.7 3.6 V Digital2 (DVDD2) RG 2.7 3.6 V Digital3 (DVDD3) D0D11 3.0 V Digital4 (DVDD4) All Other Digital 3.0 V POWER SUPPLY VOLTAGE, AD9849 Analog (AVDD1, 2, 3) 2.7 3.6 V Digital1 (DVDD1) H1H4 3.0 5.5 V Digital2 (DVDD2) RG 3.0 5.5 V Digital3 (DVDD3) D0D11 3.0 V Digital4 (DVDD4) All Other Digital 3.0 V POWER DISSIPATION, AD9848 20 MHz, DVDD1, 2 = 3 V, 100 pF H Loading 220 mW Total Shutdown Mode 1 mW POWER DISSIPATION, AD9849 30 MHz, DVDD1, 2 = 5 V, 100 pF H Loading 450 mW Total Shutdown Mode 1 mW Specifications subject to change without notice. 2 REV. A