AD9978A Datasheet | Analog Devices

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 d B, 0 d B, +3 d B, and +6 d B gain 6 d B to 42 d B, 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 GENERAL DESCRIPTION The AD9978A is a highly integrated, dual-channel, chargecoupled 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 plete 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 dualchannel 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 - 25°C to +85°C. APPLICATIONS Digital video cameras Digital still cameras Digital copiers Multifunction printers High speed industrial cameras FUNCTIONAL BLOCK DIAGRAM VREF INP_A INM_A 6d B TO 42d B CDS/ SHA VGA ADC DOUT0P DOUT0N DOUT1P DOUT1N TCLKP TCLKN DOUT2P DOUT2N DOUT3P DOUT3N - 3d B, 0d B, +3d B, +6d B - 3d B, 0d B, +3d B, +6d B INP_B INM_B 6d B TO 42d B CDS/ SHA VGA CLAMP CLAMP ADC LVDS SERIALIZER INTERNAL CLOCKS CLK_OUT Precision Timing CORE SYNC GENERATOR INTERNAL REGISTERS 07751-001 SDATA Figure 1. For more information about the AD9978A, contact Analog Devices, Inc., at afe.ccd@analog.. Rev. Sp0 Information furnished by Analog...