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XRD6406 fiches techniques PDF

Exar Corporation - High Speed Analog-to-Digital Converter

Numéro de référence XRD6406
Description High Speed Analog-to-Digital Converter
Fabricant Exar Corporation 
Logo Exar Corporation 





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XRD6406 fiche technique
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FEATURES
· 10-Bit Resolution
· Sampling Rate to 6 MSPS
· DNL = +1 LSB, INL = +2 LSB
· Internal S/H Function
· Single 5V Power Supply
· VIN DC Range: 0V to VDD
· VREF DC Range: 1V to VDD
· Low Power: 65mW
· Three-State Digital Outputs
· Latch-Up Free
· Pin Compatible With: MP8784
XRD6406
CMOS
6 MSPS, 10-Bit, High Speed
Analog-to-Digital Converter
APPLICATIONS
· Digital Color Copiers
· Precision CCDs and Scanners
· Digital Radio
June 1998-2
BENEFITS
· Simplified Analog Design
· Rugged
· Few External Components, no S/H Needed
· Reduced Board Space
GENERAL DESCRIPTION
The XRD6406 is a 10-bit, 6 MSPS, Analog-to-Digital
Converter for applications that require high speed and
high accuracy. Designed using an advanced CMOS
process, this part offers excellent performance, low
power consumption and latch-up free operation.
The XRD6406 uses a subranging architecture to maintain
low power consumption at high conversion rates. Our
proprietary comparator design achieves a low analog
input capacitance. The input circuitry of the XRD6406
includes an on-chip S/H function that allows this part to
digitize analog input signals between AGND and AVDD.
The designer can choose the internally generated
reference voltages, or provide external reference
voltages to the VRB and VRT pins. The internal reference
generates 1.0V at VRB and 4V at VRT. Providing external
reference voltages allows easy interface to any input
signal range between GND and VDD. This also allows the
system to cancel zero scale and full scale errors. The
Reference Ladder taps (R1 to R3) can be used to
externally trim any INL errors.
This device operates from a single 5V supply. Power
consumption from a 5V supply is typically 65mW at
FS=6MHz.
SIMPLIFIED BLOCK DIAGRAM
VRTS
VRT
R1-R3
3
VDD
VRB
VRBS
MSB
Comparators
Latch
LSB
Comparators
Latch
S/H
Clock
Logic
AVDD AGND
Encoder
F/F
DB9 (MSB)
DB0 (LSB)
VIN
CLK
OE DVDD DGND
Rev. 1.00
E1998
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z (510) 668-7017

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