Datasheet LTC1749 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | 12-Bit, 80Msps Wide Bandwidth ADC |
| Pages / Page | 20 / 7 — TYPICAL PERFOR A CE CHARACTERISTICS. 8192 Point FFT, fIN = 250.2MHz,. … |
| File Format / Size | PDF / 289 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. 8192 Point FFT, fIN = 250.2MHz,. 8192 Point 2-Tone FFT, 25.01MHz. –10dB, PGA = 1
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LTC1749
W U TYPICAL PERFOR A CE CHARACTERISTICS 8192 Point FFT, fIN = 250.2MHz, 8192 Point FFT, fIN = 250.2MHz, 8192 Point 2-Tone FFT, 25.01MHz –10dB, PGA = 1 –20dB, PGA = 1 and 30.1MHz, –7dB, PGA = 0
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) 1749 G16 1749 G17 1749 G18
8192 Point 2-Tone FFT, 65.01MHz SFDR vs 30.2MHz Input Level, SFDR vs 70.2MHz, Input Level, and 70.01MHz, –7dB, PGA = 0 PGA = 0 PGA = 0
0 110 110 –10 100 100 –20 90 90 –30 80 80 –40 70 70 –50 60 60 –60 50 50 –70 40 40 AMPLITUDE (dBFS) –80 SFDR (dBc AND dBFS) 30 SFDR (dBc AND dBFS) 30 –90 –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) 1749 G19 1749 G20 1749G21
SFDR vs 140.2MHz, Input Level, SNR vs Input Frequency and PGA = 1 SFDR vs 250.2MHz, Input Level Amplitude, PGA = 0
120 120 72.0 –20dB 71.5 100 100 –10dB 71.0 –1dB 80 80 70.5 60 60 70.0 SNR (dBFS) 69.5 40 40 SFDR (dBc AND dBFS) SFDR (dBc AND dBFS) 69.0 20 20 68.5 0 0 68.0 –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) 1749 G22 1749 G23 1749 G24 1749f 7
W U TYPICAL PERFOR A CE CHARACTERISTICS 8192 Point FFT, fIN = 250.2MHz, 8192 Point FFT, fIN = 250.2MHz, 8192 Point 2-Tone FFT, 25.01MHz –10dB, PGA = 1 –20dB, PGA = 1 and 30.1MHz, –7dB, PGA = 0
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) 1749 G16 1749 G17 1749 G18
8192 Point 2-Tone FFT, 65.01MHz SFDR vs 30.2MHz Input Level, SFDR vs 70.2MHz, Input Level, and 70.01MHz, –7dB, PGA = 0 PGA = 0 PGA = 0
0 110 110 –10 100 100 –20 90 90 –30 80 80 –40 70 70 –50 60 60 –60 50 50 –70 40 40 AMPLITUDE (dBFS) –80 SFDR (dBc AND dBFS) 30 SFDR (dBc AND dBFS) 30 –90 –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) 1749 G19 1749 G20 1749G21
SFDR vs 140.2MHz, Input Level, SNR vs Input Frequency and PGA = 1 SFDR vs 250.2MHz, Input Level Amplitude, PGA = 0
120 120 72.0 –20dB 71.5 100 100 –10dB 71.0 –1dB 80 80 70.5 60 60 70.0 SNR (dBFS) 69.5 40 40 SFDR (dBc AND dBFS) SFDR (dBc AND dBFS) 69.0 20 20 68.5 0 0 68.0 –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) 1749 G22 1749 G23 1749 G24 1749f 7
