HT82V26

HT82V26 16-Bit CCD/CIS Analog Signal Processor Features · Operating voltage: 5V · Low power consumption at 400mW (Typ.) · Power-down mode: Under 2mA (Typ.) · 16-bit 30 MSPS A/D converter · Guaranteed won¢t miss codes · 1~6 programmable gain · Correlated Double Sampling · ±250mV programmable offset · Input clamp circuitry · Internal voltage reference · Multiplexed byte-wide output (8+8 format) · Programmable 3-wire serial interface · 3V/5V digital I/O compatibility · 3-channel operation up to 30 MSPS · 2-channel (Even-Odd) operation up to 30 MSPS · 1-channel operation up to 25 MSPS · 28-pin SSOP/SOP package (lead-free on request) Applications Flatbed document scanners Film scanners Digital color copiers Multifunction peripherals General Description The HT82V26 is a complete analog signal processor for CCD imaging applications. It features a 3-channel architecture designed to sample and condition the outputs of tri-linear color CCD arrays. Each channel consists of an input clamp, Correlated Double Sampler (CDS), offset DAC and Programmable Gain Amplifier (PGA), and a high performance 16-bit A/D converter. The CDS amplifiers may be disabled for use with sensors such as Contact Image Sensors (CIS) and CMOS active pixel sensors, which do not require CDS. The 16-bit digital output is multiplexed into an 8-bit output word that is accessed using two read cycles. The internal registers are programmed through a 3-wire serial interface, which provides gain, offset and operating mode a...