Datasheet LTC2271 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 16-Bit, 20Msps Serial Low Noise Dual ADC |
| Pages / Page | 24 / 10 — TYPICAL PERFORMANCE CHARACTERISTICS. 2nd, 3rd Harmonic vs Input. SNR vs … |
| File Format / Size | PDF / 410 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. 2nd, 3rd Harmonic vs Input. SNR vs Input Frequency, –1dBFS,. Frequency, –1dBFS, 20Msps,
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LTC2271
TYPICAL PERFORMANCE CHARACTERISTICS 2nd, 3rd Harmonic vs Input 2nd, 3rd Harmonic vs Input SNR vs Input Frequency, –1dBFS, Frequency, –1dBFS, 20Msps, Frequency, –1dBFS, 20Msps, 20Msps, 2.1V Range 2.1V Range 1.05V Range
85 105 105 84 100 100 3RD SINGLE-ENDED 95 95 83 ENCODE 3RD 90 90 2ND 82 85 85 SNR (dBFS) DIFFERENTIAL 2ND 81 ENCODE 80 80 80 2ND AND 3RD HARMONIC (dBFS) 75 2ND AND 3RD HARMONIC (dBFS) 75 79 70 70 0 20 40 60 80 100 120 140 0 20 40 60 80 100 120 140 0 20 40 60 80 100 120 140 INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) 2271 G10 2271 G11 2271 G12
IVDD vs Sample Rate, 5MHz, IOVDD vs Sample Rate, 5MHz, SFDR vs Input Level, fIN = 5MHz, –1dBFS Sine Wave Input on –1dBFS Sine Wave Input on 20Msps, 2.1V Range Each Channel Each Channel
130 100 45 dBFS 4 LANE, 3.5mA 120 40 110 95 35 100 30 90 2 LANE, 3.5mA (mA) 90 (mA) 25 80 4 LANE, 1.75mA I VDD dBc I OVDD 20 70 1 LANE, 3.5mA SFDR (dBc AND dBFS) 85 15 2 LANE, 1.75mA 60 1 LANE, 1.75mA 50 10 40 80 5 –80 –70 –60 –50 –40 –30 –20 –10 0 0 5 10 15 20 0 5 10 15 20 INPUT LEVEL (dBFS) SAMPLE RATE (Msps) SAMPLE RATE (Msps) 2271 G13 2271 G14 2271 G15
SFDR vs Analog Input Common SNR vs SENSE, Mode, fIN = 9.7MHz, 20Msps, SNR, SFDR vs Sample Rate, fIN = 5MHz, –1dBFS 2.1V Range fIN = 5MHz, –1dBFS
85 100 110 V 84 DD 1.9V 83 95 VDD 1.7V SFDR 100 82 81 90 SNR (dBFS) 80 SFDR (dBFS) 90 SNR, SFDR (dBFS) 79 85 SNR 78 77 80 80 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 0.6 0.7 0.8 0.9 1 1.1 1.2 0 5 10 15 20 SENSE PIN (V) INPUT COMMON MODE (V) SAMPLE RATE (Msps) 2271 G16 2271 G17 2271 G18 2271f 10
TYPICAL PERFORMANCE CHARACTERISTICS 2nd, 3rd Harmonic vs Input 2nd, 3rd Harmonic vs Input SNR vs Input Frequency, –1dBFS, Frequency, –1dBFS, 20Msps, Frequency, –1dBFS, 20Msps, 20Msps, 2.1V Range 2.1V Range 1.05V Range
85 105 105 84 100 100 3RD SINGLE-ENDED 95 95 83 ENCODE 3RD 90 90 2ND 82 85 85 SNR (dBFS) DIFFERENTIAL 2ND 81 ENCODE 80 80 80 2ND AND 3RD HARMONIC (dBFS) 75 2ND AND 3RD HARMONIC (dBFS) 75 79 70 70 0 20 40 60 80 100 120 140 0 20 40 60 80 100 120 140 0 20 40 60 80 100 120 140 INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) 2271 G10 2271 G11 2271 G12
IVDD vs Sample Rate, 5MHz, IOVDD vs Sample Rate, 5MHz, SFDR vs Input Level, fIN = 5MHz, –1dBFS Sine Wave Input on –1dBFS Sine Wave Input on 20Msps, 2.1V Range Each Channel Each Channel
130 100 45 dBFS 4 LANE, 3.5mA 120 40 110 95 35 100 30 90 2 LANE, 3.5mA (mA) 90 (mA) 25 80 4 LANE, 1.75mA I VDD dBc I OVDD 20 70 1 LANE, 3.5mA SFDR (dBc AND dBFS) 85 15 2 LANE, 1.75mA 60 1 LANE, 1.75mA 50 10 40 80 5 –80 –70 –60 –50 –40 –30 –20 –10 0 0 5 10 15 20 0 5 10 15 20 INPUT LEVEL (dBFS) SAMPLE RATE (Msps) SAMPLE RATE (Msps) 2271 G13 2271 G14 2271 G15
SFDR vs Analog Input Common SNR vs SENSE, Mode, fIN = 9.7MHz, 20Msps, SNR, SFDR vs Sample Rate, fIN = 5MHz, –1dBFS 2.1V Range fIN = 5MHz, –1dBFS
85 100 110 V 84 DD 1.9V 83 95 VDD 1.7V SFDR 100 82 81 90 SNR (dBFS) 80 SFDR (dBFS) 90 SNR, SFDR (dBFS) 79 85 SNR 78 77 80 80 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 0.6 0.7 0.8 0.9 1 1.1 1.2 0 5 10 15 20 SENSE PIN (V) INPUT COMMON MODE (V) SAMPLE RATE (Msps) 2271 G16 2271 G17 2271 G18 2271f 10
