Datasheet LTC2293, LTC2292, LTC2291 (Analog Devices) - 10

LTC2293/LTC2292/LTC2291
W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2291: 8192 Point FFT, LTC2291: 8192 Point FFT, LTC2291: 8192 Point FFT, fIN = 30MHz, –1dB, 2V Range, fIN = 70MHz, –1dB, 2V Range, fIN = 140MHz, –1dB, 2V Range, 25Msps 25Msps 25Msps
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 2 4 6 8 10 12 0 2 4 6 8 10 12 0 2 4 6 8 10 12 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 229321 G36 229321 G37 229321 G38
LTC2291: 8192 Point 2-Tone FFT, fIN = 10.9MHz and 13.8MHz, LTC2291: Grounded Input LTC2291: SNR vs Input Frequency, –1dB, 2V Range, 25Msps Histogram, 25Msps –1dB, 2V Range, 25Msps
0 70000 72 –10 61758 –20 60000 –30 71 50000 –40 –50 40000 –60 70 –70 COUNT 30000 SNR (dBFS) AMPLITUDE (dB) –80 20000 –90 69 –100 10000 –110 2155 1607 –120 0 68 0 2 4 6 8 10 12 2048 2049 2050 0 50 100 150 200 FREQUENCY (MHz) CODE INPUT FREQUENCY (MHz) 229321 G39 229321 G40 229321 G41
LTC2291: SFDR vs Input LTC2291: SNR and SFDR vs Frequency, –1dB, 2V Range, Sample Rate, 2V Range, LTC2291: SNR vs Input Level, 25Msps fIN = 5MHz, –1dB fIN = 5MHz, 2V Range, 25Msps
100 110 80 dBFS 95 70 SFDR 100 60 90 90 50 85 dBc 40 80 SFDR (dBFS) 80 30 75 SNR AND SFDR (dBFS) SNR SNR (dBc AND dBFS) 20 70 70 10 65 60 0 0 50 100 150 200 0 10 20 30 40 50 –60 –50 – 40 –30 –20 –10 0 INPUT FREQUENCY (MHz) SAMPLE RATE (Msps) INPUT LEVEL (dBFS) 229321 G42 229321 G43 229321 G44 229321fa 10