Rainbow-electronics ADC12L080 Manual de usuario

ADC12L08012-Bit, 80 MSPS, 450 MHz Bandwidth A/D Converter withInternal ReferenceGeneral DescriptionThe ADC12L080 is a monolithic CMOS analog-to-digita

Timing Diagram20061009Output TimingTransfer Characteristic20061010FIGURE 1. Transfer CharacteristicADC12L080www.national.com 10

Typical Performance Characteristics DNL, INL VA=VD= 3.3V, VDR= 2.5V,VREF= 1.0V external, VCM= 1.65V, fCLK= 80 MHz, fIN= 0, unless otherwise stated.DNL

Typical Performance Characteristics DNL, INL VA=VD= 3.3V, VDR= 2.5V,VREF= 1.0V external, VCM= 1.65V, fCLK= 80 MHz, fIN= 0, unless otherwise stated. (C

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, VREF= 1.0V external,VCM= 1.65V, fCLK= 80 MHz, fIN= 70 MHz, unless otherwise stated.SNR,SIN

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, VREF= 1.0V external,VCM= 1.65V, fCLK= 80 MHz, fIN= 70 MHz, unless otherwise stated. (Conti

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, VREF= 1.0V external,VCM= 1.65V, fCLK= 80 MHz, fIN= 70 MHz, unless otherwise stated. (Conti

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, VREF= 1.0V external,VCM= 1.65V, fCLK= 80 MHz, fIN= 70 MHz, unless otherwise stated. (Conti

Functional DescriptionOperating on a single +3.3V supply, the ADC12L080 uses apipeline architecture with error correction circuitry to helpensure maxi

Applications Information (Continued)The full scale error in LSB for a sine wave input can bedescribed as approximatelyEFS=4096(1-sin(90˚ + dev))Where

Applications Information (Continued)3.3 PDThe PD pin, when high, holds the ADC12L080 in a power-down mode to conserve power when the converter is notb

Ordering InformationIndustrial (−40˚C ≤ TA≤ +85˚C) PackageADC12L080CIVY 32 Pin LQFPADC12L080EVAL Evaluation BoardBlock Diagram20061002ADC12L080www.nat

Applications Information (Continued)20061014FIGURE 5. Differential Drive Circuit of Figure 420061015FIGURE 6. Driving the Signal Inputs with a Transfo

Applications Information (Continued)5.0 POWER SUPPLY CONSIDERATIONSThe power supply pins should be bypassed with a 10 µFcapacitor and with a 0.1 µF lo

Applications Information (Continued)tween the converter’s input pins and ground or to the refer-ence input pin and ground should be connected to a ver

Physical Dimensions inches (millimeters) unless otherwise noted32-Lead LQFP PackageOrdering Number ADC12L080CIVYNS Package Number VBE32ANational does

Pin Descriptions and Equivalent CircuitsPin No. Symbol Equivalent Circuit DescriptionANALOG I/O2VIN+Differential analog signal Input pins. With a 1.0V

Pin Descriptions and Equivalent Circuits (Continued)Pin No. Symbol Equivalent Circuit Description14–19,22–27D0–D11Digital data output pins that make u

Absolute Maximum Ratings(Notes 1, 2)If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distri

DC and Logic Electrical CharacteristicsUnless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA=VD= +3.3V, VDR

DC and Logic Electrical Characteristics (Continued)Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA=VD

AC Electrical Characteristics (Continued)20061007Note 8: To guarantee accuracy, it is required that |VA–VD| ≤ 100 mV and separate bypass capacitors ar

Specification DefinitionsAPERTURE DELAY is the time after the rising edge of theclock to when the input signal is acquired or held for conver-sion.APE