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VSP2232YG PDF预览

VSP2232YG

更新时间: 2024-11-15 13:15:35
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德州仪器 - TI 数码相机
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19页 247K
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VSP2232YG 数据手册

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VSP2232  
SLAS320 – MAY 2001  
CCD SIGNAL PROCESSOR  
FOR DIGITAL CAMERAS  
FEATURES  
DESCRIPTION  
D
CCD Signal Processing  
– Correlated Double Sampling (CDS)  
– Programmable Black Level Clamping  
TheVSP2232isacompletemixed-signalprocessingIC  
for digital cameras that provides signal conditioning and  
analog-to-digital conversion for the output of a CCD  
array. The primary CCD channel provides correlated  
double sampling (CDS) to extract the video information  
fromthepixels, a6-dBto42-dBgainwithdigitalcontrol  
for varying illumination conditions, and black level  
clamping for an accurate black level reference.  
D
D
Programmable Gain Amplifier (PGA)  
– –6-dB to 42-dB Gain Ranging  
10-Bit Digital Data Output  
– Up to 36-MHz Conversion Rate  
– No Missing Codes  
D
D
76-dB Signal-to-Noise Ratio  
Input signal clamping and offset correction of the input  
CDS is also performed. The stable gain control is linear  
in dB. Additionally, the black level is quickly recovered  
after gain change.  
Portable Operation  
– Low Voltage: 2.7 V to 3.6 V  
– Low Power: 130 mW (typ) at 3.0 V  
– Standby Mode: 6 mW  
The VSP2232Y is pin-to-pin compatible with the  
VSP2262Y (12-bit 20 MHz) one-chip product.  
The VSP2232Y is available in a 48-pin LQFP package  
and operates from a single 3-V/3.3-V supply.  
VSP2232 block diagram  
CLPDM  
SHP SHD  
SLOAD SCLK SDATA  
Serial Interface  
RESET  
ADCCK DRV  
DD  
V
CC  
Input  
Clamp  
Timing Control  
B(0–11)  
Correlated  
Double  
Sampling (CDS)  
Programmable  
Gain Amplifier  
(PGA)  
12-Bit  
Digital  
Output  
Output  
Latch  
Analog-to-Digital  
Converter  
–6 to 42 dB  
Optical Black (OB)  
Level Clamping  
CCD  
Output  
Signal  
Preblanking  
PBLK  
Reference Voltage Generator  
COB  
CPLOB  
BYPP2 BYP BYPM REFN CM REFP  
DRVGND  
GNDA  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright 2001, Texas Instruments Incorporated  
1
www.ti.com  

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