Datasheet LTC1746 (Analog Devices) - 6

LTC1746
W U TYPICAL PERFOR A CE CHARACTERISTICS SNR vs Sample Rate, SFDR vs Sample Rate, Grounded Input Histogram Input Frequency = 5MHz, –1dB Input Frequency = 5MHz, –1dB
25000 78 110 77 3.2V RANGE 76 100 2V RANGE 20000 75 3.2V RANGE 74 90 15000 73 2V RANGE 72 80 COUNT 10000 SNR (dBFS) 71 SFDR (dB) 70 70 69 5000 68 60 67 0 66 50 8167 8168 8169 8170 8171 8172 0 10 20 30 40 50 60 0 10 20 30 40 50 60 CODE SAMPLE RATE (Msps) SAMPLE RATE (Msps) 1746 G10 1746 G11 1746 G12
SNR vs Input Frequency and SNR vs Input Frequency and Amplitude 3.2V Range Amplitude 2V Range
80 80 –1dBFS 75 75 –1dBFS –6dBFS 70 70 –6dBFS 65 65 SNR (dB) SNR (dB) 60 60 –20dBFS 55 55 –20dBFS 50 50 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) 1746 G13 1746 G14
SFDR vs Input Frequency SFDR vs Input Frequency and Amplitude, 3.2V Range and Amplitude, 2V Range
110 110 –20dBFS –20dBFS 100 100 90 –6dBFS 90 –6dBFS –1dBFS 80 80 –1dBFS 70 70 SFDR (dBFS) SFDR (dBFS) 60 60 50 50 40 40 0 10 20 30 40 50 60 70 80 90 100 0 50 100 150 200 INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) 1746 G15 1746 G16 1746f 6