HT82V16
16-Bit CCD/CIS Analog Signal Processor
Features
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Low power CMOS: 350mW
9 ADC clock latency for digital data output
16-bit 6 MSPS A/D converter
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Internal MUX for channel operation
1 or 3-channel operation
Pixel-rate switch operation
Programmable 3-wire serial interface
+5V digital I/O compatibility
28-pin SOP (300mil)/SSOP (209mil/
optional) package
3-channel correlated double sampler
1~6 programmable gain
Input clamp circuitry for CDS-mode
Internal/external circuit for CIS
Internal/external voltage reference
General Description
The HT82V16 is a complete analog signal pro-
cessor for CCD imaging applications. It fea-
tures a 3-channel architecture designed to
sample and condition the outputs of the
trilinear color CCD arrays. Each channel con-
sists of an input clamp, Correlated Double
Sampler (CDS), offset DAC and Programmable
Gain Amplifier (PGA), multiplexed to 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 pro-
grammed through a 3-wire serial interface,
which provides gain, offset, and operating mode
adjustments.
Block Diagram
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November 28, 2000