Datasheet LTC2207-14, LTC2206-14 (Analog Devices) - 9

LTC2207-14/LTC2206-14
Typical perForMance characTerisTics LTC2207-14: 64K Point FFT, LTC2207-14: 64K Point FFT, LTC2207-14: 32K Point FFT, fIN = 70.1MHz, –25dBFS, fIN = 70.1MHz, –25dBFS, fIN = 174.8MHz, –1dBFS, PGA = 0, RAND “On”, Dither “Off’ PGA = 0, RAND “On”, Dither “On’ PGA = 1, RAND “On”, Dither “Off’
0 0 0 –10 –10 –10 –20 –20 –20 –30 –30 –30 –40 –40 –40 –50 –50 –50 –60 –60 –60 –70 –70 –70 AMPLITUDE (dBFS) –80 AMPLITUDE (dBFS) –80 AMPLITUDE (dBFS) –80 –90 –90 –90 –100 –100 –100 –110 –110 –110 –120 –120 –120 0 10 20 30 40 50 0 10 20 30 40 50 0 10 20 30 40 50 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 2207614 G16 2207614 G17 2207614 G18
LTC2207-14: 32K Point FFT, LTC2207-14: SFDR vs Input LTC2207-14: SFDR vs Input fIN = 250.11MHz, –1dBFS, Level, fIN = 140.1MHz, PGA = 1, Level, fIN = 140.1MHz, PGA = 1, PGA = 1, RAND “On”, Dither “Off’ RAND “On”, Dither “Off” RAND “On”, Dither “On”
0 120 120 –10 –20 100 100 –30 –40 80 80 –50 –60 60 60 –70 AMPLITUDE (dBFS) –80 40 40 SFDR (dBc AND dBFS) SFDR (dBc AND dBFS) –90 –100 20 20 –110 –120 0 0 0 10 20 30 40 50 –80 –70 –60 –50 –40 –30 –20 –10 0 –80 –70 –60 –50 –40 –30 –20 –10 0 FREQUENCY (MHz) INPUT LEVEL (dBFS) INPUT LEVEL (dBFS) 2207614 G19 2207614 G20 2207614 G21
LTC2207-14: SNR and SFDR LTC2207-14: SFDR (HD2 and LTC2207-14: SNR vs Input vs Sample Rate, fIN = 5.1MHz, HD3) vs Input Frequency Frequency –1dBFS
105 78 110 100 77 105 SFDR 95 76 100 90 PGA = 1 75 95 85 PGA = 0 74 90 80 SFDR (dBc) PGA = 0 SNR (dBFS) 73 85 75 PGA = 1 SNR AND SFDR (dBFS) 70 72 80 SNR 65 71 75 60 70 70 0 100 200 300 400 500 0 100 200 300 400 500 0 25 50 75 100 125 150 175 200 INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) SAMPLE RATE (Msps) 2207614 G22 2207614 G23 2207614 G24 220714614fd For more information www.linear.com/LTC2207-14 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Converter Characteristics Pin Configuration Analog Input Dynamic Accuracy Common Mode Bias Characteristics Digital Inputs and Digital Outputs Power Requirements Timing Characteristics Timing Diagram Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Related Parts