VSP2582 Datasheet, PDF (1/28 Pages) Texas Instruments – CCD ANALOG FRONT-END FOR DIGITAL CAMERAS

VSP2582
VSP2582
www.ti.com
SBES002B – JUNE 2008 – REVISED JUNE 2011
CCD ANALOG FRONT-END FOR DIGITAL CAMERAS
Check for Samples: VSP2582
FEATURES
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•2 CCD Signal Processing:
– 36-MHz Correlated Double Sampling (CDS)
• 12-Bit Analog-to-Digital Conversion:
– 36-MHz Conversion Rate
– No Missing Codes Ensured
• 78-dB Input-referred SNR (at CDS Gain 0 dB)
• Programmable Black Level Clamping
• Programmable Gain Amp (PGA):
–9 dB to +35 dB, –3 dB to +9 dB
by Analog Front Gain (CDS)
–6 dB to +26 dB by Digital Gain
• Portable Operation:
– Low Voltage: 2.7 V to 3.6 V
– Low Power: 85 mW at 3.0 V and 36 MHz,
1 mW in Standby Mode
• QFN-36 Package
DESCRIPTION
The VSP2582 is a complete mixed-signal processing
IC for digital cameras that provides correlated double
sampling (CDS) and analog-to-digital conversion
(ADC) for the output of charge-coupled device (CCD)
array. The CDS extracts video information of the
pixels from the CCD signal, and the ADC converts it
to a digital signal. For varying illumination
conditions, –9 dB to +35 dB very stable gain control
is provided. This gain control is linear in dB. Input
signal clamping and offset correction of the input
CDS are also provided.
Offset correction is performed by an Optical Black
(OB) level calibration loop, and held at a calibrated
black level clamping for an accurate black level
reference. Additionally, the black level is quickly
recovered after a gain change.
The VSP2582 is available in a QFN-36 package, and
operates from a single +3 V supply. The RHH
package features an exposed thermal pad, resulting
in substantially improved thermal performance.
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008–2011, Texas Instruments Incorporated