Datasheet LTC1747 (Analog Devices) - 8

LTC1747
W U TYPICAL PERFOR A CE CHARACTERISTICS SNR vs Input Frequency, SFDR vs Sample Rate, 5MHz Input –1dB, 3.2V Range –1dB, 3.2V Range
72.5 100 TA = 25°C TA = 25°C 98 72.0 96 71.5 94 92 71.0 90 SNR (dBFS) SFDR (dBFS) 88 70.5 86 70.0 84 82 69.5 0 20 40 60 80 100 80 0 20 40 60 80 100 INPUT FREQUENCY (MHz) SAMPLE RATE (Msps) 1747 G25 1747 G26
SNR vs Sample Rate, 5MHz Input Supply Current (IVDD) –1dB, 3.2V Range vs Sample Rate
74.0 300 TA = 25°C TA = 25°C 73.5 290 73.0 280 72.5 270 72.0 (mA) 260 SNR (dBFS) I VDD 71.5 250 71.0 70.5 240 70.0 230 0 20 40 60 80 100 0 20 40 60 80 100 SAMPLE RATE (Msps) SAMPLE RATE (Msps) 1747 G27 1747 G28
High Input Frequency SFDR, High Input Frequency SNR, Offset and Gain Error –1dB, 2V Range –1dB, 2V Range vs Temperature
100 70.5 8 4TH OR HIGHER HARMONIC 95 6 70.0 GAIN ERROR 90 4 69.5 85 2 69.0 OFFSET ERROR 80 0 68.5 SFDR (dBFS) 75 SNR (dBFS) ERROR (LSB) –2 2ND OR 3RD HARMONIC 68.0 70 –4 65 67.5 –6 60 67.0 –8 0 50 100 150 200 250 0 50 100 150 200 250 – 50 –30 –10 10 30 50 70 90 INPUT FREQUENCY (MHz) INPUT FREQENCY (MHz) TEMPERATURE (°C) 1747 G29 1747 G30 1747 G03 1747fa 8