Datasheet RT2378-20 (Analog Devices) - 7
| Hersteller | Analog Devices |
| Beschreibung | Radiation Tolerant 20-Bit, 1Msps, Low Power Plastic Package SAR ADC |
| Seiten / Seite | 10 / 7 — Typical. perForMance characTerisTics TA = 25°C, VDD = 2.5V, OVDD = 2.5V, … |
| Dateiformat / Größe | PDF / 181 Kb |
| Dokumentensprache | Englisch |
Typical. perForMance characTerisTics TA = 25°C, VDD = 2.5V, OVDD = 2.5V, VCM = 2.5V,
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RT2378-20
Typical perForMance characTerisTics TA = 25°C, VDD = 2.5V, OVDD = 2.5V, VCM = 2.5V, REF = 5V, fSMPL = 1Msps, unless otherwise noted. Integral Nonlinearity Differential Nonlinearity vs Output Code vs Output Code DC Histogram
2.0 0.5 50000 σ = 2.3 1.5 0.4 45000 0.3 40000 1.0 0.2 35000 0.5 0.1 30000 0 0.0 25000 COUNTS –0.5 –0.1 20000 INL ERROR (ppm) DNL ERROR (ppm) –0.2 15000 –1.0 –0.3 10000 –1.5 –0.4 5000 –2.0 –0.5 0 0 262144 524288 786432 1048576 0 262144 524288 786432 1048576 524279 524283 524287 524291 524295 OUTPUT CODE OUTPUT CODE OUTPUT CODE RT237820 G01 RT237820 G02 RT237820 G03
128k Point FFT fSMPL = 1Msps, THD, Harmonics fIN = 2kHz SNR, SINAD vs Input Frequency vs Input Frequency
0 108 –90 SNR = 104dB THD –20 THD = –128dB 106 –95 2ND SINAD = 104dB 3RD SNR –100 –40 SFDR = 132dB 104 –105 –60 102 –110 –80 SINAD 100 –115 –100 98 –120 AMPLITUDE (dBFS) –120 SNR, SINAD (dBFS) –125 96 HARMONICS, THD (dBFS) –140 –130 –160 94 –135 –180 92 –140 0 100 200 300 400 500 0 25 50 75 100 125 150 175 200 0 25 50 75 100 125 150 175 200 FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) RT237820 G04 RT237820 G05 RT237820 G06
SNR, SINAD vs Input level, SNR, SINAD vs Reference THD, Harmonics vs Reference fIN = 2kHz Voltage, fIN = 2kHz Voltage, fIN = 2kHz
105.0 105 –110 104 –115 103 104.5 THD SNR 102 SNR –120 101 SINAD 3RD SINAD 104.0 100 –125 99 SNR, SINAD (dBFS) SNR, SINAD (dBFS) –130 98 103.5 HARMONICS, THD (dBFS) 97 –135 96 2ND 103.0 95 –140 –40 –30 –20 –10 0 2.5 3.0 3.5 4.0 4.5 5.0 2.5 3.0 3.5 4.0 4.5 5.0 INPUT LEVEL (dB) REFERENCE VOLTAGE (V) REFERENCE VOLTAGE (V) RT237820 G07 RT237820 G08 RT237820 G09 rt237820fa For more information www.linear.com 7 Document Outline Features Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Converter Characteristics Dynamic Accuracy Reference Input Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics
Typical perForMance characTerisTics TA = 25°C, VDD = 2.5V, OVDD = 2.5V, VCM = 2.5V, REF = 5V, fSMPL = 1Msps, unless otherwise noted. Integral Nonlinearity Differential Nonlinearity vs Output Code vs Output Code DC Histogram
2.0 0.5 50000 σ = 2.3 1.5 0.4 45000 0.3 40000 1.0 0.2 35000 0.5 0.1 30000 0 0.0 25000 COUNTS –0.5 –0.1 20000 INL ERROR (ppm) DNL ERROR (ppm) –0.2 15000 –1.0 –0.3 10000 –1.5 –0.4 5000 –2.0 –0.5 0 0 262144 524288 786432 1048576 0 262144 524288 786432 1048576 524279 524283 524287 524291 524295 OUTPUT CODE OUTPUT CODE OUTPUT CODE RT237820 G01 RT237820 G02 RT237820 G03
128k Point FFT fSMPL = 1Msps, THD, Harmonics fIN = 2kHz SNR, SINAD vs Input Frequency vs Input Frequency
0 108 –90 SNR = 104dB THD –20 THD = –128dB 106 –95 2ND SINAD = 104dB 3RD SNR –100 –40 SFDR = 132dB 104 –105 –60 102 –110 –80 SINAD 100 –115 –100 98 –120 AMPLITUDE (dBFS) –120 SNR, SINAD (dBFS) –125 96 HARMONICS, THD (dBFS) –140 –130 –160 94 –135 –180 92 –140 0 100 200 300 400 500 0 25 50 75 100 125 150 175 200 0 25 50 75 100 125 150 175 200 FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) RT237820 G04 RT237820 G05 RT237820 G06
SNR, SINAD vs Input level, SNR, SINAD vs Reference THD, Harmonics vs Reference fIN = 2kHz Voltage, fIN = 2kHz Voltage, fIN = 2kHz
105.0 105 –110 104 –115 103 104.5 THD SNR 102 SNR –120 101 SINAD 3RD SINAD 104.0 100 –125 99 SNR, SINAD (dBFS) SNR, SINAD (dBFS) –130 98 103.5 HARMONICS, THD (dBFS) 97 –135 96 2ND 103.0 95 –140 –40 –30 –20 –10 0 2.5 3.0 3.5 4.0 4.5 5.0 2.5 3.0 3.5 4.0 4.5 5.0 INPUT LEVEL (dB) REFERENCE VOLTAGE (V) REFERENCE VOLTAGE (V) RT237820 G07 RT237820 G08 RT237820 G09 rt237820fa For more information www.linear.com 7 Document Outline Features Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Converter Characteristics Dynamic Accuracy Reference Input Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics