Analog signal processors target imaging The XRD4460 analog image signal processor directly interfaces to CCDs. The chip includes a correlated double sample and hold, a 2䃄 programmable gain amplifier (PGA), a 10-bit ADC, and automatic offset calibration. PCGA and offset calibration codes are controlled through a serial interface. In quantities of 1000, the part costs approximately $6. Exar, 48720 Kato Road, Fremont, CA 94538; (510) 668-7000; Fax: (510) 668-7001.