Rainbow-electronics ADC1173 Manual de usuario

ADC11738-Bit, 3-Volt, 15MSPS, 33mW A/D ConverterGeneral DescriptionThe ADC1173 is a low power, 15 MSPS analog-to-digitalconverter that digitizes signa

Typical Performance Characteristics (Continued)THD vs fINSINAD vs fIN1008903710089038SFDR vs fINSNR vs SUPPLY VOLTAGE10089039 10089040THD vs SUPPLY VO

Typical Performance Characteristics (Continued)SFDR vs SUPPLY VOLTAGE IDDD+IADDvs fCLK1008904310089032TODvs Temperature Spectral Response1008902510089

Specification DefinitionsANALOG INPUT BANDWIDTH is a measure of the fre-quency at which the reconstructed output fundamental drops3 dB below its low f

Timing Diagram10089011FIGURE 1. ADC1173 Timing Diagram10089012FIGURE 2. tEN,tDISTest CircuitADC1173www.national.com13

Functional DescriptionThe ADC1173 uses a new, unique architecture to achieve7.4 effective bits at and maintains superior dynamic perfor-mance up to1⁄2

Applications Information (Continued)The reference self-bias circuit of Figure 3 is very simple andperformance is adequate for many applications. Super

Applications Information (Continued)10089014FIGURE 4. Better defining the ADC Reference Voltage. Self-bias is still used, but the reference voltages a

Applications Information (Continued)If reference voltages are desired that are more than a fewtens of millivolts from the self-bias values, the circui

Applications Information (Continued)Figure 6 gives an example of a suitable layout. All analogcircuitry (input amplifiers, filters, reference componen

Applications Information (Continued)10089018FIGURE 8. 5.5 MHz Low Pass Filter to Eliminate Harmonics at the Signal Input.10089019FIGURE 9. 11 MHz Low

Ordering InformationIndustrial (−40˚C ≤ TA≤ +75˚C) PackageADC1173CIJM SOIC (EIAJ)ADC1173CIJMX SOIC (EIAJ) (tape & reel)ADC1173CIMTC TSSOPADC1173CI

Physical Dimensions inches (millimeters) unless otherwise noted24-Lead Package JMOrdering Number ADC1173CIJMNS Package Number M24DADC1173www.national.

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)24-Lead Package TCOrdering Number ADC1173CIMTCNS Package Number MTC24LIFE S

Pin Descriptions and Equivalent Circuits (Continued)PinNo. Symbol Equivalent CircuitDescription17 VRTAnalog Input that is the high (top) side of there

Pin Descriptions and Equivalent Circuits (Continued)PinNo. Symbol Equivalent CircuitDescription2, 24 DVSSThe ground return for the digital supply. AVS

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

Converter Electrical Characteristics (Continued)The following specifications apply for AVDD=DVDD= +3.0VDC, OE = 0V, VRT= +2.0V, VRB= 0V, CL= 20 pF, fC

Converter Electrical Characteristics (Continued)The following specifications apply for AVDD=DVDD= +3.0VDC, OE = 0V, VRT= +2.0V, VRB= 0V, CL= 20 pF, fC

Typical Performance CharacteristicsINL vs Temperature DNL vs Temperature10089020 10089021SNR vs Temperature SNR vs fIN1008902210089033THD vs Temperatu

Typical Performance Characteristics (Continued)SINAD vs fINSFDR vs Temperature1008903110089035SFDR vs fINDifferential Gain vs Temperature1008902910089