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HT82V26A -- 16-Bit CCD/CIS Analog Signal
Processor
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 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 adjustments.
The HT82V26A operates from a single 5V power supply, typically
consumes 400mW of power.
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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 process)
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