Datasheet LTC2391-16 (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | 16-Bit, 250ksps SAR ADC with 94dB SNR |
| Seiten / Seite | 24 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, fSMPL = 250ksps, unless … |
| Dateiformat / Größe | PDF / 229 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, fSMPL = 250ksps, unless otherwise noted. Integral Nonlinearity
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LTC2391-16
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, fSMPL = 250ksps, unless otherwise noted. Integral Nonlinearity Differential Nonlinearity DC Histogram vs Output Code vs Output Code (External Reference)
2.0 1.5 2000000 1800000 1.5 1.0 1600000 1.0 1400000 0.5 0.5 1200000 0 0 1000000 COUNTS 800000 –0.5 INL ERROR (LSB) DNL ERROR (LSB) –0.5 600000 –1.0 400000 –1.0 –1.5 200000 –2.0 –1.5 0 0 16384 32768 49152 65536 0 16384 32768 49152 65536 32764 32766 32768 32770 32772 OUTPUT CODE OUTPUT CODE CODE 239116 G01 239116 G02 239116 G03
DC Histogram Internal Reference Output (Internal Reference) vs Temperature Offset Error vs Temperature
2000000 4.0975 1.0 TC = 4ppm/°C 1800000 4.0970 1600000 4.0965 0.8 1400000 4.0960 1200000 4.0955 0.6 1000000 4.0950 COUNTS 800000 4.0945 0.4 600000 4.0940 OFFSET ERROR (LSB) REFERENCE OUTPUT (V) 400000 4.0935 0.2 200000 4.0930 0 4.0925 0 32764 32766 32768 32770 32772 –55 –35 –15 5 25 45 65 85 105 125 –55 –35 –15 5 25 45 65 85 105 125 CODE TEMPERATURE (°C) TEMPERATURE (°C) 239116 G04 239116 G05 239116 G06
16k Point FFT fS = 250ksps, 16k Point FFT fS = 250ksps, Full-Scale Error vs Temperature fIN = 20kHz fIN = 100kHz
10 0 0 SNR = 93.4dB 8 SNR = 94dB –20 THD –103dB –20 THD –98.7dB 6 SINAD = 93.5dB SINAD = 92.3dB –40 SFDR = 104dB –40 SFDR = 106.6dB 4 –60 –60 2 –80 –80 0 –100 –100 –2 –4 –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) FULL-SCALE ERROR (LSB) –6 –140 –140 –8 –160 –160 –10 –180 –180 –55 –35 –15 5 25 45 65 85 105 125 0 25 50 75 100 125 0 25 50 75 100 125 TEMPERATURE (°C) FREQUENCY (kHz) FREQUENCY (kHz) 239116 G07 239116 G08 239116 G09 239116fa 6
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, fSMPL = 250ksps, unless otherwise noted. Integral Nonlinearity Differential Nonlinearity DC Histogram vs Output Code vs Output Code (External Reference)
2.0 1.5 2000000 1800000 1.5 1.0 1600000 1.0 1400000 0.5 0.5 1200000 0 0 1000000 COUNTS 800000 –0.5 INL ERROR (LSB) DNL ERROR (LSB) –0.5 600000 –1.0 400000 –1.0 –1.5 200000 –2.0 –1.5 0 0 16384 32768 49152 65536 0 16384 32768 49152 65536 32764 32766 32768 32770 32772 OUTPUT CODE OUTPUT CODE CODE 239116 G01 239116 G02 239116 G03
DC Histogram Internal Reference Output (Internal Reference) vs Temperature Offset Error vs Temperature
2000000 4.0975 1.0 TC = 4ppm/°C 1800000 4.0970 1600000 4.0965 0.8 1400000 4.0960 1200000 4.0955 0.6 1000000 4.0950 COUNTS 800000 4.0945 0.4 600000 4.0940 OFFSET ERROR (LSB) REFERENCE OUTPUT (V) 400000 4.0935 0.2 200000 4.0930 0 4.0925 0 32764 32766 32768 32770 32772 –55 –35 –15 5 25 45 65 85 105 125 –55 –35 –15 5 25 45 65 85 105 125 CODE TEMPERATURE (°C) TEMPERATURE (°C) 239116 G04 239116 G05 239116 G06
16k Point FFT fS = 250ksps, 16k Point FFT fS = 250ksps, Full-Scale Error vs Temperature fIN = 20kHz fIN = 100kHz
10 0 0 SNR = 93.4dB 8 SNR = 94dB –20 THD –103dB –20 THD –98.7dB 6 SINAD = 93.5dB SINAD = 92.3dB –40 SFDR = 104dB –40 SFDR = 106.6dB 4 –60 –60 2 –80 –80 0 –100 –100 –2 –4 –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) FULL-SCALE ERROR (LSB) –6 –140 –140 –8 –160 –160 –10 –180 –180 –55 –35 –15 5 25 45 65 85 105 125 0 25 50 75 100 125 0 25 50 75 100 125 TEMPERATURE (°C) FREQUENCY (kHz) FREQUENCY (kHz) 239116 G07 239116 G08 239116 G09 239116fa 6