Datasheet LTC2255, LTC2254 (Analog Devices) - 9

LTC2255/LTC2254
W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2254: SNR and SFDR vs LTC2254: SFDR vs Input Frequency, Sample Rate, 2V Range, LTC2254: SNR vs Input Level, –1dB, 2V Range, 105Msps fIN = 5MHz, –1dB fIN = 70MHz, 2V Range, 105Msps
100 90 80 dBFS SFDR 70 95 80 60 90 50 SNR 85 dBc 70 40 80 SFDR (dBRS) 30 75 SNR (dBc AND dBFS) SNR AND SFDR (dBFS) 60 20 70 10 65 50 0 0 50 100 150 200 250 300 350 0 20 40 60 80 100 120 140 –70 –60 –50 –40 –30 –20 –10 0 INPUT FREQUENCY (MHz) 22554 G26 SAMPLE RATE (Msps) 22554 G27 INPUT LEVEL (dBFS) 22554 G28
LTC2254: SFDR vs Input Level, LTC2254: IVDD vs Sample Rate, f 5MHz Sine Wave Input, –1dB IN = 70MHz, 2V Range, 105Msps
110 120 100 dBFS 115 90 110 80 105 70 dBc 2V RANGE 60 100 (mA) 1V RANGE 50 95 I VDD 40 90 SFDR (dBc AND dBFS) 30 85 20 10 80 0 75 –80 –70 –60 –50 –40 –30 –20 –10 0 0 20 40 60 80 100 120 INPUT LEVEL (dBFS) 22554 G29 SAMPLE RATE (Msps) 22554 G30
LTC2254: IOVDD vs Sample Rate, 5MHz Sine Wave Input, –1dB, LTC2254: SNR vs SENSE, OVDD = 1.8V fIN = 5MHz, –1dB
7 74 73 6 72 5 71 70 4 (mA) 69 3 I OVDD SNR (dBFS) 68 2 67 66 1 65 0 64 0 20 40 60 80 100 120 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 SAMPLE RATE (Msps) 22554 G31 SENSE PIN (V) 22554 G33 22554fa 9