MP8830 datasheet(1/20 Pages) EXAR

Numer części	MP8830

Szczegółowy opis	Triple 10-bit High Speed Analog-to-Digital Converter with Digitally Controlled References

PDF	20 Pages

Scroll/Zoom	100%

Producent	EXAR [Exar Corporation]

Strona internetowa	http://www.exar.com

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MP8830

1

Rev. 1.00

Triple 10-bit High Speed

Analog-to-Digital Converter with

Digitally Controlled References

FEATURES

• 3 Independent 10-bit ADCs

• Simultaneous Sampling @ 1.25 MSPS

• Independent Digitally Controlled References

• 9-bit Positive Reference and 6-bit Negative

Reference Adjustment per Sample

• Low Power: 500mW (typ)

• Internal Track and Hold

• Single 5 V Supply

• Fast Mode for OCR

• A

IN Input Range: 1.3 V to 2.6 V p-p

• Black Level Clamp

• Latch-Up Free

• ESD Protection: 2000 V Minimum

BENEFITS

• Pixel-to-Pixel Correction

• Improves Effective Resolution over Software

Correction Schemes

• Reduced DSP/Processor Demands

• Reduction of Parts Count and System Cost

APPLICATIONS

• Precision CCD Systems

• Color and B&W Scanners

• Digital Copiers

• IR Cameras

GENERAL DESCRIPTION

The MP8830 is a simultaneous sampling 1.25 MSPS triple

10-bit A/D Converter. It provides pixel-to-pixel correction of CCD

or other inputs by updating gain and offset parameters supplied

from an external correction memory. Each ADC has a 9-bit DAC

driving its positive reference voltage and a 6-bit DAC driving its

negative reference to independently adjust the gain and offset of

each channel.

The MP8830 uses ADCs with a subranging architecture to

maintain low power consumption at high conversion rates. Our

proprietary comparator design achieves a low analog input ca-

pacitance and performs an on-chip sample and hold function.

The MP8830 uses proprietary high speed DACs to drive the

ADC references which allows reference adjustment on every

conversion at a 1.25 MHz rate. An internal clamp is available for

DC restoration of AIN black level.

The MP8830 operates from a single 5 V supply and an exter-

nal 1 V reference, and consumes only 500mW of power (typ).

Specified for operation over the temperature range 0 to 60

°C,

the MP8830 is available in a 64 lead Plastic Quad Flat Pack

(PQFP) package.

ORDERING INFORMATION

Package

Type

Temperature

Range

Part No.

PQFP

0 to +60

°C

MP8830AE

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