VSP2260Y/2KC BURR-BROWN [Burr-Brown Corporation], VSP2260Y/2KC Datasheet

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VSP2260Y/2KC

Manufacturer Part Number
VSP2260Y/2KC
Description
CCD SIGNAL PROCESSOR for DIGITAL CAMERAS
Manufacturer
BURR-BROWN [Burr-Brown Corporation]
Datasheet
www.ti.com
FEATURES
Copyright © 2000, Texas Instruments Incorporated
Output
Signal
CCD SIGNAL PROCESSING:
Correlated Double Sampling (CDS)
Programmable Black Level Clamping
PROGRAMMABLE GAIN AMPLIFIER (PGA):
–6dB to +42dB Gain Ranging
10-BIT DIGITAL DATA OUTPUT:
Up to 20MHz Conversion Rate
No Missing Codes
79dB SIGNAL-TO-NOISE RATIO
PORTABLE OPERATION:
Low Voltage: 2.7V to 3.6V
Low Power: 83mW (typ) at 3.0V
Stand-By Mode: 6mW
CCDIN
CCD
CLPDM
Clamp
Preblanking
Input
PBLK
CCD SIGNAL PROCESSOR for
SHP
Correlated
Sampling
Double
(CDS)
SHD
Optical Black (OB)
Level Clamping
COB
DIGITAL CAMERAS
SLOAD SCLK SDATA
CLPOB
Serial Interface
Programmable
Amplifier
(PGA)
Gain
BYPP2
SBMS010
+42dB
–6dB
to
Reference Voltage Generator
BYP
DESCRIPTION
The VSP2260 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, –6dB 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
VSP2260Y is available in an LQFP-48 package and
operates from a single +3V/+3.3V supply.
RESET
BYPM
REFN
Converter
Analog-
Digital
to-
Control
Timing
CM
ADCCK
REFP
Printed in U.S.A. November, 2000
Output
Latch
DRV
VSP2260
DD
DRVGND
Output
Digital
10-Bit
V
CC
GNDA
B[9:0]

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VSP2260Y/2KC Summary of contents

Page 1

CCD SIGNAL PROCESSOR for DIGITAL CAMERAS FEATURES CCD SIGNAL PROCESSING: Correlated Double Sampling (CDS) Programmable Black Level Clamping PROGRAMMABLE GAIN AMPLIFIER (PGA): –6dB to +42dB Gain Ranging 10-BIT DIGITAL DATA OUTPUT 20MHz Conversion Rate No Missing Codes ...

Page 2

SPECIFICATIONS + +3.0V, DRV = +3.0V, Conversion Rate ( PARAMETER RESOLUTION CONVERSION RATE DIGITAL INPUT Logic Family Input Voltage LOW to HIGH Threshold Voltage (VT+) HIGH to LOW Threshold Voltage (VT–) ...

Page 3

ABSOLUTE MAXIMUM RATINGS Supply Voltage DRV ........................................................... +4. Supply-Voltage Differences: Among V ......................................... 0.1V CC Ground-Voltage Differences: Among GNDA .................................... 0.1V Digital Input Voltage ............................................................ –0.3 to +5.3V Analog Input Voltage .................................................. –0 ...

Page 4

PIN CONFIGURATION Top View REFP 38 REFN GNDA 41 GNDA RESET SLOAD 46 SDATA 47 48 SCLK 1 PIN DESCRIPTIONS (1) DESCRIPTION PIN NAME TYPE 1 NC ...

Page 5

CDS TIMING SPECIFICATIONS CCD Output N Signal SHP ( (1) SHD t INHIBIT ADCCK t HOLD N – – 10 B[9:0] SYMBOL t CKP t ADCCK HIGH/LOW Pulse Width ADC ...

Page 6

SERIAL INTERFACE TIMING SPECIFICATIONS t XS SLOAD t CKH SCLK SDATA MSB SYMBOL t CKP t Clock HIGH Pulse Width CKH t Clcok LOW Pulse Width CKL SLOAD to SCLK Setup Time ...

Page 7

THEORY OF OPERATION INTRODUCTION The VSP2260 is a complete mixed-signal IC that contains all of the key features associated with the processing of the CCD imager output signal in a video camera, a digital still camera, security camera, or similar ...

Page 8

Reference, pin 39), and CM (Common-Mode Voltage, pin 37) should be bypassed to ground with a 0.1 F ceramic capacitor and should not be used elsewhere in the system, as they affect the stability of these reference levels, which ...

Page 9

ADCCK with a delay of nine clock cycles (data latency is nine). If the input voltage is higher than the supply rail by 0.3V, or lower than the ground rail by ...

Page 10

MSB REGISTERS TEST Configuration PGA Gain Clamp Level Clock Polarity Reserved Reserved ...

Page 11

TIMINGS The CDS and the ADC are operated by SHP/SHD and their derivative timing clocks generated by the on-chip timing generator. The digital output data is synchronized with ADCCK. See the VSP2260 “CDS Timing Specifications” for the timing relationship among ...

Page 12

... STATUS(1) VSP2260Y ACTIVE VSP2260Y/2K ACTIVE VSP2260Y/2KC ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design ...

Page 13

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the ...

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