XRD64L14 Просмотр технического описания (PDF) - Exar Corporation
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XRD64L14 Datasheet PDF : 16 Pages
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XRD64L14
3.3V CMOS 10-Bit, 20 MSPS, High
Speed Analog-to-Digital Converter
...the analog plus companyTM with 4:1 Input Analog Multiplexer
FEATURES
D 10-Bit Resolution
D 20MHz Sampling Rate
D 4:1 Analog Input Multiplexer
D Internal S/H Function
D Single 3.0V Power Supply
D VIN DC Range: 0V to AVDD
D VREF DC Range: 1V to AVDD
D Low Power: 80mW (typ)
D Three-State Digital Outputs
D Power Down: 1.0mW (typ) Power Dissipation
D ESD Protection: 2000V Minimum
D For 5V Operation Refer to XRD6414
APPLICATIONS
D Multiplexed Data Acquisition
D Precision Scanners
D Digital Color Copiers
D Test and Scientific Instruments
D Digital Cameras
D Medical Imaging
D IR Imaging
March 1997–3
BENEFITS
D Complete Analog-to-Digital Converter (ADC) that
Requires no External Active Components
D Small Outline Package to Reduce Board Space
D Low Power Dissipation
D Easy to Use Rugged Design
GENERAL DESCRIPTION
The XRD64L14 is a 10-bit, 20MSPS, Analog-to-Digital
Converter (ADC) with a 4:1 Analog Input Multiplexer 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 XRD64L14 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
XRD64L14 includes an on-chip S/H function that allows
the product to digitize analog input signals between
AGND and AVDD. The XRD64L14 can be placed into
power down (stand-by) mode, reducing the power
dissipation to 1.0mW (typical) by a digitally controlled pin.
Providing external reference voltages allows easy
interface to any input signal range between AGND and
AVDD. This also allows the system to calibrate out zero
scale and full scale errors by adjusting VRT and VRB.
This device operates from a single 3.3V supply. Power
consumption from a 3.3V supply is typically 80mW at
FS=15MHz. For 5V power supply operation refer to
XRD6414.
ORDERING INFORMATION
Part No.
XRD64L14AIQ
Package
32 Lead Plastic TQFP (7 x 7 x 1.4 mm)
Operating
Temperature Range
–40°C to +85°C
Rev. 1.00
E1996
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z FAX (510) 668-7017
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