HT82V26A Datasheet, PDF (1/17 Pages) Holtek Semiconductor Inc – 16-Bit CCD/CIS Analog Signal Processor

HT82V26A
16-Bit CCD/CIS Analog Signal Processor
Technical Document
· Tools Information
· FAQs
· Application Note
Features
· Operating voltage: 5V (Typ.)
· 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
Applications
Flatbed document scanners
Film scanners
· 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)
Digital color copiers
Multifunction peripherals
General Description
The HT82V26A is a complete analog signal processor
for CCD imaging applications. It features a 3-channel
architecture designed to sample and condition the out-
puts of tri-linear color CCD arrays. Each channel con-
sists 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 sen-
sors 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 out-
put word that is accessed using two read cycles. The in-
ternal registers are programmed through a 3-wire serial
interface, which provides gain, offset and operating
mode adjustments.
The HT82V26A operates from a single 5V power supply,
typically consumes 400mW of power.
Rev. 1.00
1
August 16, 2005