12-Bit 65 MSPS Dual A/D Converter
The AD15252 is a dual, 12-bit, 65MSPS, analog-to-digital converter(ADC). It features a differential front-end amplification circuit followed by a sample-and-hold amplifier and multistage pipeline ADC. It is designed to operate with a +3.3 V analog supply and +2.5 V/+3.3 V digital supply. Each input is fully differential, ac-coupled, and terminated in 100 Ω input impedances. The full-scale differential signal input range is 296 mV p-p.
Two parallel 12-bit digital output buses provide data flow from the ADCs. The digital output data is presented in either straight binary or two’s complement format. Out-of-range (OTR) signals indicate an overflow condition, which can be used with the most significant bit to determine low or high overflow. Dual single-ended clock inputs control all internal conversion cycles. A duty cycle stabilizer is present allowing for wide variations in the clock duty cycle while maintaining excellent performance. The AD15252 is optimized for applications in anti-jam global positioning receivers and well suited for communicationsapplications.