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VSP1021PFB
3V, 10-Bit, 25 MSPS, Area CCD Analog Front End
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SLES016C− FEBRUARY 2002 − REVISED MARCH 2004
features 10-Bit, 25-MSPS, Analog-to-Digital
Converter (ADC) Single Power Supply Operation, 2.7 V to
3.3 V Low Power: 95 mW at 2.7 V, Power-Down
Mode: 1 mW Full-Channel Differential-Nonlinearity Error:
<±0.5 LSB Typical Full-Channel Integral-Nonlinearity Error:
<±1.5 LSB Typical Dual Input Modes: CCD and Video Programmable-Gain Amplifier (PGA) With
0-dB to 36-dB Gain Range (0.047 dB/Step)
for CCD Mode, 0-dB to 12-dB Gain Range
(0.047 dB/Step) for Video Mode Serial Interface for Register Configuration Programmable Black-Level and Offset
Calibration Analog Gain Implementation With Specified
No Missing Code, Even At High Gains Additional Digital-to-Analog Converters
(DACs) for External Analog Setting Internal Reference Voltages Programmable Internal-Timing Signal
Delays 48-Terminal TQFP Package
applications Digital Still Camera Digital Camcorder Digital Video Camera
descriptionThe VSP1021 device is a highly-integrated monolithic analog-signal processor/digitizer designed to interface
the area charge-coupled-device (CCD) sensors in digital-camera and camcorder applications. The VSP1021
device performs all the analog processing functions necessary to maximize the dynamic range, corrects various
errors associated with the CCD sensor, and then digitizes the results with an on-chip, high-speed ADC. The key
components of the VSP1021 device include: Input clamp circuitry and a correlated double sampler (CDS) Programmable-gain amplifier (PGA) with 0-dB to 36-dB gain range for CCD mode and 0-dB to 12-dB range
for video mode Two internal DACs for automatic or programmable optical-black-level and offset calibration 10-bit, 25-MSPS pipeline ADC for CCD mode and a 28-MSPS ADC for video mode Parallel data port for easy microprocessor interface and a serial port for configuring internal control registers Two additional DACs for external system control Internal reference voltages
The VSP1021 device is designed using advanced CMOS process and operates from a single 3-V power supply
with a normal power consumption of just 95 mW, and 1 mW in power-down mode.
High throughput rate, single 3-V operation, very-low-power consumption, and fully-integrated analog-
processing circuitry make the VSP1021 device an ideal CCD and video-signal-processing solution for electronic
video-camcorder applications.
This device is available in a 48-terminal TQFP package and is specified over an operating temperature range
of –20°C to 75°C.
AVAILABLE OPTIONSPlease 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.
