Datasheet LTC2285 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | Dual 14-Bit, 125Msps Low Power 3V ADC |
| Pages / Page | 24 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. SNR vs Input Frequency,. SFDR vs … |
| File Format / Size | PDF / 594 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. SNR vs Input Frequency,. SFDR vs Input Frequency,. SNR and SFDR vs Sample Rate,
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LTC2285
TYPICAL PERFORMANCE CHARACTERISTICS SNR vs Input Frequency, SFDR vs Input Frequency, SNR and SFDR vs Sample Rate, –1dB, 2V Range, 125Msps –1dB, 2V Range, 125Msps 2V Range, fIN = 5MHz, –1dB
75 100 90 74 SFDR 95 73 80 72 90 71 SNR 85 70 70 80 SNR (dBFS) 69 SFDR (dBRS) 68 75 SNR AND SFDR (dBFS) 60 67 70 66 65 65 50 0 50 100 150 200 250 300 350 0 50 100 150 200 250 300 350 0 20 40 60 80 100 120 140 160 INPUT FREQUENCY (MHz) 2285 G10 INPUT FREQUENCY (MHz) 2285 G11 SAMPLE RATE (Msps) 2285 G12
SNR vs Input Level, SFDR vs Input Level, IVDD vs Sample Rate, fIN = 70MHz, 2V Range, 125Msps fIN = 70MHz, 2V Range, 125Msps 5MHz Sine Wave Input, –1dB
80 110 290 dBFS 70 100 280 dBFS 90 270 60 80 260 50 70 250 dBc 60 2V RANGE 40 dBc (mA) 240 50 1V RANGE I VDD 30 230 40 SNR (dBc AND dBFS) SFDR (dBc AND dBFS) 220 20 30 20 210 10 10 200 0 0 190 –70 –60 –50 –40 –30 –20 –10 0 –80 –70 –60 –50 –40 –30 –20 –10 0 0 20 40 60 80 100 120 140 INPUT LEVEL (dBFS) 2285 G13 INPUT LEVEL (dBFS) 2285 G14 SAMPLE RATE (Msps) 2285 G15
IOVDD vs Sample Rate, 5MHz Sine Wave Input, –1dB, 0VDD = 1.8V SNR vs SENSE, fIN = 5MHz, –1dB
16 74 73 14 72 12 71 10 70 (mA) 8 69 I OVDD 68 6 SNR (dBFS) 67 4 66 2 65 0 64 0 20 40 60 80 100 120 140 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 SAMPLE RATE (Msps) 2285 G16 SENSE PIN (V) 2285 G17 2285fb 7
TYPICAL PERFORMANCE CHARACTERISTICS SNR vs Input Frequency, SFDR vs Input Frequency, SNR and SFDR vs Sample Rate, –1dB, 2V Range, 125Msps –1dB, 2V Range, 125Msps 2V Range, fIN = 5MHz, –1dB
75 100 90 74 SFDR 95 73 80 72 90 71 SNR 85 70 70 80 SNR (dBFS) 69 SFDR (dBRS) 68 75 SNR AND SFDR (dBFS) 60 67 70 66 65 65 50 0 50 100 150 200 250 300 350 0 50 100 150 200 250 300 350 0 20 40 60 80 100 120 140 160 INPUT FREQUENCY (MHz) 2285 G10 INPUT FREQUENCY (MHz) 2285 G11 SAMPLE RATE (Msps) 2285 G12
SNR vs Input Level, SFDR vs Input Level, IVDD vs Sample Rate, fIN = 70MHz, 2V Range, 125Msps fIN = 70MHz, 2V Range, 125Msps 5MHz Sine Wave Input, –1dB
80 110 290 dBFS 70 100 280 dBFS 90 270 60 80 260 50 70 250 dBc 60 2V RANGE 40 dBc (mA) 240 50 1V RANGE I VDD 30 230 40 SNR (dBc AND dBFS) SFDR (dBc AND dBFS) 220 20 30 20 210 10 10 200 0 0 190 –70 –60 –50 –40 –30 –20 –10 0 –80 –70 –60 –50 –40 –30 –20 –10 0 0 20 40 60 80 100 120 140 INPUT LEVEL (dBFS) 2285 G13 INPUT LEVEL (dBFS) 2285 G14 SAMPLE RATE (Msps) 2285 G15
IOVDD vs Sample Rate, 5MHz Sine Wave Input, –1dB, 0VDD = 1.8V SNR vs SENSE, fIN = 5MHz, –1dB
16 74 73 14 72 12 71 10 70 (mA) 8 69 I OVDD 68 6 SNR (dBFS) 67 4 66 2 65 0 64 0 20 40 60 80 100 120 140 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 SAMPLE RATE (Msps) 2285 G16 SENSE PIN (V) 2285 G17 2285fb 7
