Datasheet LTC2248, LTC2247, LTC2246 (Analog Devices) - 10

LTC2248/LTC2247/LTC2246
W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2246: 8192 Point 2-Tone FFT, fIN = 10.9MHz and 13.8MHz, LTC2246: Grounded Input LTC2246: SNR vs Input Frequency, –1dB, 2V Range, 25Msps Histogram, 25Msps –1dB, 2V Range, 25Msps
0 25000 75 –10 22016 –20 20000 18803 74 –30 –40 15000 73 –50 13373 –60 COUNT –70 10000 SNR (dBFS) 72 AMPLITUDE (dB) –80 6919 –90 5000 71 –100 3227 –110 853 278 43 –120 0 70 0 2 4 6 8 10 12 8179 8180 8181 8182 8183 8184 8185 8186 0 50 100 150 200 FREQUENCY (MHz) CODE INPUT FREQUENCY (MHz) 2246 G07 2246 G08 2246 G09
LTC2246: SFDR vs Input LTC2246: SNR and SFDR vs Frequency, –1dB, 2V Range, Sample Rate, 2V Range, LTC2246: SNR vs Input Level, 25Msps fIN = 5MHz, –1dB fIN = 5MHz, 2V Range, 25Msps
100 110 80 dBFS 70 95 100 60 90 SFDR 50 90 85 dBc 40 80 80 SFDR (dBFS) 30 SNR 75 SNR (dBc AND dBFS) SNR AND SFDR (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) 2246 G10 2246 G11 2246 G12
LTC2246: IOVDD vs Sample Rate, LTC2246: SFDR vs Input Level, LTC2246: IVDD vs Sample Rate, 5MHz Sine Wave Input, –1dB, f 5MHz Sine Wave Input, –1dB IN = 5MHz, 2V Range, 25Msps OVDD = 1.8V
120 35 3 110 dBFS 100 30 90 2 80 2V RANGE dBc 70 (mA) 25 (mA) 90dBc SFDR I VDD 60 1V RANGE I OVDD REFERENCE LINE 1 SFDR (dBc AND dBFS) 50 20 40 30 20 15 0 –60 – 50 – 40 –30 –20 –10 0 0 5 10 15 20 25 30 35 0 5 10 15 20 25 30 35 INPUT LEVEL (dBFS) SAMPLE RATE (Msps) SAMPLE RATE (Msps) 2246 G13 2246 G14 2246 G15 224876fa 10