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Exar Corporation

MP8830 Datasheet Preview

MP8830 Datasheet

Triple 10-bit High Speed Analog-to-Digital Converter

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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
AIN Input Range: 1.3 V to 2.6 V p-p
Black Level Clamp
Latch-Up Free
ESD Protection: 2000 V Minimum
MP8830
Triple 10-bit High Speed
Analog-to-Digital Converter with
Digitally Controlled References
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
PQFP
Temperature
Range
0 to +60°C
Part No.
MP8830AE
Rev. 1.00
1




Exar Corporation

MP8830 Datasheet Preview

MP8830 Datasheet

Triple 10-bit High Speed Analog-to-Digital Converter

No Preview Available !

MP8830
BLOCK DIAGRAM
AFORC
ASENS
AGND2
BFORC
BSENS
BGND2
CFORC
CSENS
CGND2
AFORC
ASENS
AGND2
BFORC
BSENS
BGND2
CFORC
CSENS
CGND2
CD0-CD14
CD0-CD5 =
Offset DAC
CD6-CD14 =
Gain DAC
ACLP
15 DAC 9
I/O
PORT 6
VRBA
10
BCLP
VRBB
CCLP
GND
DCL
VRBC
(Pass Through Bus)
AV DD
(4)
AGND
(4)
DVDD DGND
(2) (3)
DAC
VIN
MUX
VRT
ADC
VIN A
DAC
VRB
AFORC
ASENS
AGND2
DAC
VIN
MUX
VRT
ADC
VIN B
DAC
VRB
BFORC
BSENS
BGND2
DAC
VIN
MUX
VRT
ADC
VIN C
DAC
VRB
CFORC
CSENS
CGND2
10
10
ADC
OUTPUT
10
DATA
MUX
10
(Pass Through Bus)
For normal convert
operation:
AD9=MSB, AD0=LSB
For pass through
operation:
AD9-CD14...AD0-CD5
ADC
I/O
15
PORT
AD0-AD9
10
PIN CONFIGURATION
See Packaging Section for
Package Dimensions
Rev. 1.00
48 33
49
See the following page
for pin numbers and
descriptions
Index
64
32
17
1 16
64 Pin PQFP
Q64
2


Part Number MP8830
Description Triple 10-bit High Speed Analog-to-Digital Converter
Maker Exar Corporation
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MP8830 Datasheet PDF






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1 MP8830 Triple 10-bit High Speed Analog-to-Digital Converter
Exar Corporation





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