Datasheet LTC2281 (Analog Devices) - 7

LTC2281
TYPICAL PERFORMANCE CHARACTERISTICS SNR vs Input Frequency, SFDR vs Input Frequency, SNR and SFDR vs Sample Rate, –1dB, 2V Range, 125Msps –1dB, 2V Range, 125Msps 2V Range, fIN = 5MHz, –1dB
65 95 90 64 90 SFDR 63 80 62 85 61 60 80 70 SNR (dBFS) 59 SFDR (dBFS) 75 58 SNR SNR AND SFDR (dBFS) 60 57 70 56 55 65 50 0 50 100 150 200 250 300 350 0 50 100 150 200 250 300 350 0 20 40 60 80 100 120 140 160 INPUT FREQUENCY (MHz) 2281 G10 INPUT FREQUENCY (MHz) 2281 G11 SAMPLE RATE (Msps) 2281 G12
SNR vs Input Level, SFDR vs Input Level, IVDD vs Sample Rate, fIN = 70MHz, 2V Range, 125Msps fIN = 70MHz, 2V Range, 125Msps 5MHz Sine Wave Input, –1dB
80 100 290 90 dBFS 280 70 dBFS 80 270 60 70 260 dBc 50 60 250 2V RANGE 40 50 (mA) 240 dBc 1V RANGE I VDD 30 40 230 SNR (dBc AND dBFS) SFDR (dBc AND dBFS) 30 220 20 20 210 10 10 200 0 0 190 –50 –40 –30 –20 –10 0 –50 –40 –30 –20 –10 0 0 20 40 60 80 100 120 140 INPUT LEVEL (dBFS) 2281 G13 INPUT LEVEL (dBFS) 2281 G14 SAMPLE RATE (Msps) 2281 G15
IOVDD vs Sample Rate, 5MHz Sine Wave Input, –1dB, 0VDD = 1.8V SNR vs SENSE, fIN = 5MHz, –1dB
16 61.8 14 61.6 12 61.4 10 61.2 (mA) 8 61.0 I OVDD 6 SNR (dBFS) 60.8 4 60.6 2 60.4 0 60.2 0 20 40 60 80 100 120 140 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 SAMPLE RATE (Msps) 2281 G16 SENSE PIN (V) 2281 G17 2281fb 7