HI3318

HI3318 August 1997 8-Bit, 15 MSPS, Flash A/D Converter Description The HI3318 is a CMOS parallel (FLASH) analog-to-digital converter designed for applications demanding both low power consumption and high speed digitization. The HI3318 operates over a wide full scale input voltage range of 4V up to 7.5V with maximum power consumption depending upon the clock frequency selected. When operated from a 5V supply at a clock frequency of 15MHz, the typical power consumption of the HI3318 is 150mW. 256 paralleled auto balanced voltage comparators measure the input voltage with respect to a known reference to produce the parallel bit outputs in the HI3318. 255 comparators are required to quantize all input voltage levels in this 8-bit converter, and the additional comparator is required for the overflow bit. Features CMOS Low Power (Typ). . . . . . . . . . . . . . . . . . . 150mW Parallel Conversion Technique Sampling Rate at 5V Supply . . . . . . . . . . . . . . . . 15MHz 8-Bit Latched Three-State Output with Overflow Bit Accuracy (Typ) . . . . . . . . . . . . . . . . . . . . . . . . . . ±1 LSB Single Supply Voltage . . . . . . . . . . . . . . . . . . 4V to 7.5V Linearity (INL): - HI3318JIP . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1.5 LSB - HI3318JIB . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1.5 LSB Sampling Rate: - HI3318JIP . . . . . . . . . . . . . . . . . . . . . . . 15MHz (67ns) - HI3318JIB . . . . . . . . . . . . . . . . . . . . . . ....