Datasheet LTC2248, LTC2247, LTC2246 (Analog Devices) - 6

LTC2248/LTC2247/LTC2246
W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2248: 8192 Point FFT, LTC2248: 8192 Point FFT, fIN = 5MHz, –1dB, 2V Range, fIN = 30MHz, –1dB, 2V Range, 65Msps 65Msps
0 0 –10 –10 –20 –20 –30 –30 –40 –40 –50 –50 –60 –60 –70 –70 AMPLITUDE (dB) –80 AMPLITUDE (dB) –80 –90 –90 –100 –100 –110 –110 –120 –120 0 5 10 15 20 25 30 0 5 10 15 20 25 30 FREQUENCY (MHz) FREQUENCY (MHz) 2248 G03 2248 G04
LTC2248: 8192 Point FFT, LTC2248: 8192 Point FFT, LTC2248: 8192 Point 2-Tone FFT, fIN = 70MHz, –1dB, 2V Range, fIN = 140MHz, –1dB, 2V Range, fIN = 28.2MHz and 26.8MHz, 65Msps 65Msps –1dB, 2V Range, 65Msps
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 (dB) –80 AMPLITUDE (dB) –80 AMPLITUDE (dB) –80 –90 –90 –90 –100 –100 –100 –110 –110 –110 –120 –120 –120 0 5 10 15 20 25 30 0 5 10 15 20 25 30 0 5 10 15 20 25 30 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 2248 G05 2248 G06 2248 G06a
LTC2248: Grounded Input LTC2248: SNR vs Input Frequency, LTC2248: SFDR vs Input Frequency, Histogram, 65Msps –1dB, 2V Range, 65Msps –1dB, 2V Range, 65Msps
25000 75 100 21824 20412 95 20000 74 90 15000 73 85 COUNT 10224 80 10000 9042 SNR (dBFS) 72 SFDR (dBFS) 75 5000 71 70 2116 1596 172 121 0 70 65 8196 8197 8198 8199 8200 8201 8202 8203 0 50 100 150 200 0 50 100 150 200 CODE INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) 2248 G08 2248 G09 2248 G10 224876fa 6