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VSP2262 Datasheet

  • VSP2262

  • CCD SIGNAL PROCESSOR for DIGITAL CAMERAS

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VSP2262
VSP
226
2
www.ti.com
CCD SIGNAL PROCESSOR for
DIGITAL CAMERAS
FEATURES
q
CCD SIGNAL PROCESSING:
Correlated Double Sampling (CDS)
Programmable Black Level Clamping
q
PROGRAMMABLE GAIN AMPLIFIER (PGA):
鈥?dB to +42dB Gain Ranging
q
12-BIT DIGITAL DATA OUTPUT:
Up to 20MHz Conversion Rate
No Missing Codes
q
79dB SIGNAL-TO-NOISE RATIO
q
PORTABLE OPERATION:
Low Voltage: 2.7V to 3.6V
Low Power: 83mW (typ) at 3.0V
Stand-By Mode: 6mW
DESCRIPTION
The VSP2262 is a complete mixed-signal processing
IC for digital cameras, providing signal conditioning
and Analog-to-Digital (A/D) conversion for the output
of a CCD array. The primary CCD channel provides
Correlated Double Sampling (CDS) to extract video
information from the pixels, 鈥?dB to +42dB gain
range with digital control for varying illumination
conditions, and black level clamping for an accurate
black level reference. Input signal clamping and offset
correction of the input CDS are also performed. The
stable gain control is linear in dB. Additionally, the
black level is quickly recovered after gain change. The
VSP2262Y is available in an LQFP-48 package and
operates from a single +3V/+3.3V supply.
CLPDM
SHP SHD
SLOAD SCLK SDATA
RESET
ADCCK
DRV
DD
V
CC
Serial Interface
Input
Clamp
Timing
Control
CCDIN
Correlated
Double
Sampling
(CDS)
Programmable
Gain
Amplifier
(PGA)
鈥?dB
to
+42dB
Analog-
to-
Digital
Converter
Output
Latch
12-Bit
Digital
Output
B[11:0]
CCD
Output
Signal
Preblanking
Optical Black (OB)
Level Clamping
Reference Voltage Generator
PBLK
COB
CLPOB
BYPP2
BYP
BYPM
REFN
CM
REFP
DRVGND
GNDA
Copyright 漏 2000, Texas Instruments Incorporated
SBMS011
Printed in U.S.A. November, 2000

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