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Part: VSP2270
Category:
Multimedia
-> Video
-> Processors
Description:
Company: Texas Instruments, Inc.
Datasheet: Download VSP2270 datasheet File size : 31 kB
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Datasheet text preview:
VSP2270
SLES019 DECEMBER 2001
CCD SIGNAL PROCESSOR FOR DIGITAL CAMERAS
FEATURES D CCD Signal Processing: D D D D
Correlated Double Sampling (CDS) Programmable Black Level Clamping Programmable Gain Amplifier (PGA) 6-dB to 42-dB Gain Ranging 10-Bit Digital Data Output: Up to 28-MHz Conversion Rate No Missing Codes 77-dB Signal-To-Noise Ratio Portable Operation: Low Voltage: 2.7 V to 3.6 V Low Power: 93 mW (Typ) at 3 V Stand-By Mode: 6 mW
DESCRIPTION
The VSP2270 device is a complete mixed-signal processing IC for digital cameras providing signal conditioning and analog-to-digital conversion for the output of a charge-coupled device (CCD) array. The primary CCD channel provides correlated double sampling (CDS) to extract the video information from the pixels, 6-dB to 42-dB 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 VSP2270Y device is available in a 48-lead LQFP package and the VSP2270M device is available in a 48-lead P-VQFN package. Both devices operate from a single 3-V/3.3-V supply.
APPLICATIONS D DSC, DVC, Security Camera
AVAILABLE OPTIONS PRODUCT PACKAGE PACKAGE OUTLINE DESIGNATOR SPECIFIED TEMPERATURE RANGE PACKAGE MARKING ORDERING NUMBER TRANSPORT MEDIA
VSP2270Y 48-Lead LQFP PT 25°C to 85°C VSP2270Y VSP2270Y 250-piece tray VSP2270Y 48-Lead LQFP PT 25°C to 85°C VSP2270Y VSP2270Y/2K Tape and reel VSP2270M 48-Lead P-VQFN RGN 25°C to 85°C VSP2270M VSP2270M 250-piece tray VSP2270M 48-Lead P-VQFN RGN 25°C to 85°C VSP2270M VSP2270M/2K Tape and reel A detailed drawing and a dimension table are located at the end of the data sheet. Models with a slash (/) are available only in tape and reel in the quantities indicated (e.g., /2K indicates 2,000 devices per reel). Ordering 2,000 pieces of the VSP2270Y/2K device will get a single 2,000-piece tape and reel.
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
www.ti.com
1
VSP2270
SLES019 DECEMBER 2001
pin assignments
PT PACKAGE (TOP VIEW)
36 35 34 33 32 31 30 29 28 27 26 25
CCDIN BYPP2 COB VCC GNDA GNDA
GNDA GNDA VCC VCC BYPM BYP
CM REFP REFN VCC GNDA GNDA NC NC RESET SLOAD SDATA SCLK
37 38 39 40 41 42 43 44 45 46 47 48 1 234 567 8 9 10 11 12 VSP2270Y
24 23 22 21 20 19 18 17 16 15 14 13
VCC CLPDM SHD SHP CLPOB PBLK VCC GNDA ADCCK GNDA DRVGND DRVDD
NC No internal connection RGN PACKAGE (TOP VIEW)
36 35 34 33 32 31 30 29 28 27 26 25
GNDA GNDA VCC VCC BYPM BYP CCDIN BYPP2 COB VCC GNDA GNDA CM REFP REFN VCC GNDA GNDA NC NC RESET SLOAD SDATA SCLK
37 38 39 40 41 42 43 44 45 46 47 48 1 2 3 4 5 6 7 8 9 10 11 12 VSP2270M 24 23 22 21 20 19 18 17 16 15 14 13
NC NC B0(LSB) B1 B2 B3 B4 B5 B6 B7 B8 B9(MSB) VCC CLPDM SHD SHP CLPOB PBLK VCC GNDA ADCCK GNDA DRVGND DRVDD
NC No internal connection 2
NC NC B0(LSB) B1 B2 B3 B4 B5 B6 B7 B8 B9(MSB)
www.ti.com
VSP2270
SLES019 DECEMBER 2001
functional block diagram
CLPDM SHP SHD SLOAD SCLK SDATA RESET ADCCK DRVDD VCC
Serial Interface
Timing Control Input Clamp Correlated Double Sampling (CDS)
CCDIN
Programmable 6 to Gain Amplifier +42 dB (PGA)
Analog-to-Digital Converter
Output Latch
10-Bit Digital Output
B[9:0]
CCD Output Signal Preblanking
Optical Black (OB) Level Clamping
Reference Voltage Generator
PBLK
COB
CLPOB
BYPP2
BYP
BYPM
REFN
CM
REFP
DRVGND
GNDA
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