Datasheet LTC2157-14, LTC2156-14, LTC2155-14 (Analog Devices) - 9

LTC2157-14/ LTC2156-14/LTC2155-14
TYPICAL PERFORMANCE CHARACTERISTICS LTC2156-14: 32K Point 2-Tone FFT, LTC2156-14: 32K Point FFT, LTC2156-14: 32K Point FFT, fIN = 70.5MHz and 69.5MHz, fIN = 571MHz, –1dBFS, 210Msps fIN = 907MHz, –1dBFS, 210Msps 210Msps
0 0 0 –20 –20 –20 –40 –40 –40 –60 –60 –60 AMPLITUDE (dBFS) –80 AMPLITUDE (dBFS) –80 AMPLITUDE (dBFS) –80 –100 –100 –100 –120 –120 –120 0 20 40 60 80 100 0 20 40 60 80 100 0 20 40 60 80 100 FREQUENCY (MHz) FREQUENCY (MHz) INPUT FREQUENCY (MHz) 21576514 G25 21576514 G26 21576514 G26a
LTC2156-14: Shorted LTC2156-14: SNR vs Input Frequency, LTC2156-14: SFDR vs Input Input Histogram –1dBFS, 210Msps Frequency, –1dBFS, 210Msps
4000 75 90 3500 70 80 3000 70 65 2500 60 60 50 2000 COUNT 55 40 1500 SNR (dBFS) SFDR (dBFS) 30 50 1000 20 500 45 10 0 40 0 8196 8198 8200 8202 8204 8206 8208 8210 8212 0 100 200 300 400 500 600 700 800 900 1000 0 100 200 300 400 500 600 700 800 900 1000 OUTPUT CODE INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) 21576514 G27 21576514 G28 21576514 G29
LTC2156-14: SNR vs Input Level, LTC2156-14: SFDR vs Input Level, fIN = 70MHz, 210Msps fIN = 71MHz, 210Msps
80 dBFS 120 70 dBFS 100 60 50 80 40 60 dBc 30 SFDR (dBFS) SNR (dBc AND dBFS) dBc 40 20 10 20 0 0 –70 –60 –50 –40 –30 –20 –10 0 –80 –70 –60 –50 –40 –30 –20 –10 0 INPUT LEVEL (dBFS) AMPLITUDE (dBFS) 21576514 G30 21576514 G31 21576514fb For more information www.linear.com/LTC2157-14 9 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Converter Characteristics Analog Input Dynamic Accuracy Internal Reference Characteristics Power Requirements Digital Inputs And Outputs Timing Characteristics Timing Diagrams Typical Performance Characteristics Pin Functions Functional Block Diagram Applications Information Package Description Related Parts