MP8830 Datasheet | Exar

FEATURES - - - - - - - - - - - - 3 Independent 10-bit ADCs Simultaneous Sampling @ 1.25 MSPS Independent Digitally Controlled References 9-bit Positive Reference and 6-bit Negative Reference Adjustment per Sample Low Power: 500m W (typ) Internal Track and Hold Single 5 V Supply Fast Mode for OCR AIN Input Range: 1.3 V to 2.6 V p-p Black Level Clamp Latch-Up Free ESD Protection: 2000 V Minimum BENEFITS - Pixel-to-Pixel Correction - Improves Effective Resolution over Software Correction Schemes - Reduced DSP/Processor Demands - Reduction of Parts Count and System Cost APPLICATIONS - - - - Precision CCD Systems Color and B&W Scanners Digital Copiers IR Cameras GENERAL DESCRIPTION The MP8830 is a simultaneous sampling 1.25 MSPS triple 10-bit A/D Converter. It provides pixel-to-pixel correction of CCD or other inputs by updating gain and offset parameters supplied from an external correction memory. Each ADC has a 9-bit DAC driving its positive reference voltage and a 6-bit DAC driving its negative reference to independently adjust the gain and offset of each channel. The MP8830 uses ADCs with a subranging architecture to maintain low power consumption at high conversion rates. Our proprietary parator design achieves a low analog input capacitance and performs an on-chip sample and hold function. The MP8830 uses proprietary high speed DACs to drive the ADC references which allows reference adjustment on every conversion at a 1.25 MHz rate. An internal clamp is available for DC restoration of AIN black level. The MP8830 operates from a single 5 V supply and an external 1 V reference, and consumes only 500m W of power (typ). Specified for operation over the temperature range 0 to 60°C, the MP8830 is available in a 64 lead Plastic Quad Flat Pack (PQFP) package. ORDERING INFORMATION Package Type PQFP Temperature Range 0 to +60°C Part No. MP8830AE Rev. 1.00 1 BLOCK DIAGRAM CAN BAN AAN VCAL AV DD (4) AGND (4) DVDD (2) DGND (3) AFORC ASENS AGND2 BFORC BSENS BGND2...