Features: 30 MSPS Correlated Double Sampler (CDS)4 dB 6 dB 6-Bit Pixel Gain Amplifier (PxGA )(R)2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)Low Noise Clamp CircuitsAnalog Preblanking Function12-Bit 30 MSPS A/D ConverterAuxiliary Inputs with VGA and Input Clamp3-Wire Serial Digital Interface3...
AD9845A: Features: 30 MSPS Correlated Double Sampler (CDS)4 dB 6 dB 6-Bit Pixel Gain Amplifier (PxGA )(R)2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)Low Noise Clamp CircuitsAnalog Preblanking Function1...
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Parameter |
With RespectTo | Min | Max | Unit |
AVDD1, AVDD2 DVDD1, DVDD2 DRVDD Digital Outputs SHP, SHD, DATACLK CLPOB, CLPDM, PBLK SCK, SL, SDATA VRT, VRB, CMLEVEL BYP1-4, CCDIN Junction Temperature Lead Temperature (10 sec) |
AVSS DVSS DRVSS DRVSS DVSS DVSS DVSS AVSS AVSS |
0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 |
+3.9 +3.9 +3.9 DRVDD + 0.3 DVDD + 0.3 DVDD + 0.3 DVDD + 0.3 AVDD + 0.3 AVDD + 0.3 150 300 |
V V V V V V V V V °C °C |
The AD9845A is a complete analog signal processor for CCD applications. It features a 30 MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays. The AD9845A's signal chain consists of an input clamp, correlated double sampler (CDS),Pixel Gain Amplifier (PxGA), digitally controlled variable gain amplifier (VGA), black level clamp, and a 12-bit A/D converter. Additional input modes are provided for processing analog video signals.
The internal registers are programmed through a 3-wire serial digital interface. Programmable features include gain adjustment, black level adjustment, input configuration, and power-down modes.
The AD9845A operates from a single 3 V power supply, typi-cally dissipates 140 mW, and is packaged in a 48-lead LQFP.