Datasheet LTC2229 (Analog Devices) - 6

LTC2229
W U TYPICAL PERFOR A CE CHARACTERISTICS 8192 Point FFT, fIN = 30MHz, 8192 Point FFT, fIN = 70MHz, 8192 Point FFT, fIN = 140MHz, –1dB, 2V Range –1dB, 2V Range –1dB, 2V Range
0 0 0 –10 –10 –10 –20 –20 –20 –30 –30 –30 –40 –40 –40 –50 –50 –50 –60 –60 –60 –70 –70 –70 AMPLITUDE (dB) –80 AMPLITUDE (dB) –80 AMPLITUDE (dB) –80 –90 –90 –90 –100 –100 –100 –110 –110 –110 –120 –120 –120 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 40 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 2229 G04 2229 G05 2229 G06
8192 Point 2-Tone FFT, f SNR vs Input Frequency, IN = 28.2MHz and 26.8MHz, –1dB, 2V Range Grounded Input Histogram –1dB, 2V Range
0 140000 75 –10 116838 74 –20 120000 73 –30 100000 72 –40 –50 71 80000 –60 70 COUNT –70 60000 SNR (dBFS) 69 AMPLITUDE (dB) –80 40000 68 –90 67 –100 20000 –110 5712 8522 66 –120 0 65 0 5 10 15 20 25 30 35 40 2050 2051 2052 0 50 100 150 200 FREQUENCY (MHz) CODE INPUT FREQUENCY (MHz) 2229 G07 2229 G08 2229 G09
SFDR vs Input Frequency, SNR and SFDR vs Sample Rate, SNR and SFDR –1dB, 2V Range 2V Range, fIN = 5MHz, –1dB vs Clock Duty Cycle
100 100 95 SFDR: DCS ON 95 SFDR 90 90 90 SFDR: DCS OFF 85 80 85 80 SNR 80 SFDR (dBFS) 70 75 75 SNR AND SFDR (dBFS) SNR AND SFDR (dBFS) SNR: DCS ON 60 70 70 SNR: DCS OFF 65 50 65 0 50 100 150 200 0 10 20 30 40 50 60 70 80 90 100 110 30 35 40 45 50 55 60 65 70 INPUT FREQUENCY (MHz) SAMPLE RATE (Msps) CLOCK DUTY CYCLE (%) 2229 G10 2229 G11 2229 G12 2229fa 6