Datasheet LTC2225 (Analog Devices) - 6

LTC2225
W U TYPICAL PERFOR A CE CHARACTERISTICS 8192 Point 2-Tone FFT, 8192 Point FFT, fIN = 70.1MHz, fIN = 4.3MHz and 4.6MHz, –1dB, 2V Range –1dB, 2V Range Grounded Input Histogram
0 0 70000 –10 –10 61758 60000 –20 –20 –30 –30 50000 –40 –40 –50 –50 40000 –60 –60 COUNT –70 –70 30000 AMPLITUDE (dB) –80 AMPLITUDE (dB) –80 20000 –90 –90 –100 –100 10000 –110 –110 2155 1607 –120 –120 0 0 1 2 3 4 5 0 1 2 3 4 5 2048 2049 2050 FREQUENCY (MHz) FREQUENCY (MHz) CODE 2225 G04 2225 G05 2225 G06
SNR vs Input Frequency, –1dB, SFDR vs Input Frequency, –1dB, SNR and SFDR vs Sample Rate, 2V Range 2V Range 2V Range, fIN = 5MHz, –1dB
75 100 100 74 95 73 90 72 90 71 85 70 80 80 SNR (dBFS) 69 SFDR (dBFS) 68 75 SNR AND SFDR (dBFS) 70 67 70 66 65 65 60 0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70 0 2 4 6 8 10 12 14 INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) SAMPLE RATE (Msps) 2225 G07 2225 G08 2225 G09
SNR vs Input Level, fIN = 5MHz, SFDR vs Input Level, fIN = 5MHz, 2V Range 2V Range
80 120 dBFS dBFS 110 70 100 60 90 80 50 dBc 70 40 60 dBc 50 30 90dBc SFDR 40 SNR (dBc AND dBFS) REFERENCE LINE SFDR (dBc AND dBFS) 20 30 20 10 10 –0 0 –70 –60 –50 –40 –30 –20 –10 0 –70 –60 –50 –40 –30 –20 –10 0 INPUT LEVEL (dBFS) INPUT LEVEL (dBFS) 2225 G10 2225 G11 2225fa 6