Datasheet LTC1750 (Analog Devices) - 7

LTC1750
W U TYPICAL PERFOR A CE CHARACTERISTICS 8192 Point 2-Tone FFT, 8192 Point FFT, fIN = 250.2MHz, 8192 Point FFT, fIN = 250.2MHz, fIN = 26.4MHz and 27.5MHz, –10dB, PGA = 1 –20dB, PGA = 1 –7dB Each Tone, PGA = 1
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 (dBFS) –80 AMPLITUDE (dBFS) –80 AMPLITUDE (dBFS) –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) 1750 G16 1750 G17 1750 G18
8192 Point 2-Tone FFT, fIN = 69.4MHz and 65.2MHz, –7dB Each Tone, PGA = 1 SFDR vs 15MHz Input Level SFDR vs 40.2MHz Input Level
0 120 120 –10 110 110 –20 100 100 –30 90 90 –40 80 80 –50 70 70 –60 60 60 –70 50 50 –80 40 40 AMPLITUDE (dBFS) SFDR (dBc AND dBFS) SFDR (dBc AND dBFS) –90 30 30 –100 20 20 –110 10 10 –120 0 0 0 5 10 15 20 25 30 35 40 –80 –70 –60 –50 –40 –30 –20 –10 0 –80 –70 –60 –50 –40 –30 –20 –10 0 FREQUENCY (MHz) INPUT LEVEL (dBFS) INPUT LEVEL (dBFS) 1750 G20 1750 G21 1750 G19
SFDR vs 140.2MHz Input Level, SFDR vs 250.2MHz Input Level, SNR vs Input Frequency and PGA = 0 PGA = 0 Amplitude, PGA = 0
120 120 76 –20dB 110 110 100 100 75 –10dB 90 90 80 80 74 70 70 –1dB 60 60 73 50 50 SNR (dBFS) 40 40 72 SFDR (dBc AND dBFS) SFDR (dBc AND dBFS) 30 30 20 20 71 10 10 0 0 70 –80 –70 –60 –50 –40 –30 –20 –10 0 –80 –70 –60 –50 –40 –30 –20 –10 0 0 50 100 150 200 250 300 INPUT LEVEL (dBFS) INPUT LEVEL (dBFS) INPUT FREQUENCY (MHz) 1750 G22 1750 G23 1750 G24 1750f 7