Datasheet AD7984 (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | 18-Bit, 1.33 MSPS PulSAR 10.5 mW ADC in MSOP/QFN |
| Seiten / Seite | 25 / 9 — AD7984. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 2.0. POSITIVE … |
| Revision | B |
| Dateiformat / Größe | PDF / 667 Kb |
| Dokumentensprache | Englisch |
AD7984. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 2.0. POSITIVE INL: +1.07LSB. POSITIVE DNL: +0.63LSB
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AD7984 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 2.5 V, REF = 5.0 V, VIO = 3.3 V.
2.0 2.0 POSITIVE INL: +1.07LSB POSITIVE DNL: +0.63LSB NEGATIVE INL: –0.73LSB NEGATIVE DNL: –0.34LSB 1.5 1.5 1.0 1.0 0.5 0.5 ) B B) S LS L 0 ( 0 L ( IN DNL –0.5 –0.5 –1.0 –1.0 –1.5 –1.5
032 038
–2.0
06973-
–2.0
06973-
0 65536 131072 196608 262144 0 65536 131072 196608 262144 CODE CODE
Figure 6. Integral Nonlinearity vs. Code Figure 9. Differential Nonlinearity vs. Code
60k 60k 55354 50k 50k 48273 48266 40k 40k S 32350 S 31003 UNT 30k UNT 30k CO CO 20k 20k 16593 14653 10k 10k 5992 5708
041 042
1801 1378 0 0 7 326 326 6 0 0 0 0 2 69 37 0 0 0
06973-
0
06973-
1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 CODE IN HEX CODE IN HEX
Figure 7. Histogram of a DC Input at the Code Center Figure 10. Histogram of a DC Input at the Code Transition
0 100 fS = 1.33MSPS –20 fIN = 10kHz 99 SNR = 98.2dB ) THD = –110.6dB 98 le –40 a SFDR = 112.5dB c SINAD = 98.0dB 97 –60 Full S 96 B) of –80 d dB 95 ( E –100 NR ( S D 94 –120 LITU P 93 M A –140 92 –160
033
91
039
–180
06973-
90
06973-
0 100 200 300 400 500 600 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 FREQUENCY (kHz) INPUT LEVEL (dB of Full Scale)
Figure 8. FFT Plot Figure 11. SNR vs. Input Level Rev. B | Page 8 of 24 Document Outline FEATURES APPLICATIONS APPLICATION DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE SINGLE-TO-DIFFERENTIAL DRIVER VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE MODE, 3-CS WIRE WITHOUT BUSY INDICATOR CS MODE, 3-WIRE WITH BUSY INDICATOR CS MODE, 4-WIRE WITHOUT BUSY INDICATOR CS MODE, 4-WIRE WITH BUSY INDICATOR CHAIN MODE WITHOUT BUSY INDICATOR CHAIN MODE WITH BUSY INDICATOR APPLICATION HINTS LAYOUT EVALUATING THE AD7984 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
VDD = 2.5 V, REF = 5.0 V, VIO = 3.3 V.
2.0 2.0 POSITIVE INL: +1.07LSB POSITIVE DNL: +0.63LSB NEGATIVE INL: –0.73LSB NEGATIVE DNL: –0.34LSB 1.5 1.5 1.0 1.0 0.5 0.5 ) B B) S LS L 0 ( 0 L ( IN DNL –0.5 –0.5 –1.0 –1.0 –1.5 –1.5
032 038
–2.0
06973-
–2.0
06973-
0 65536 131072 196608 262144 0 65536 131072 196608 262144 CODE CODE
Figure 6. Integral Nonlinearity vs. Code Figure 9. Differential Nonlinearity vs. Code
60k 60k 55354 50k 50k 48273 48266 40k 40k S 32350 S 31003 UNT 30k UNT 30k CO CO 20k 20k 16593 14653 10k 10k 5992 5708
041 042
1801 1378 0 0 7 326 326 6 0 0 0 0 2 69 37 0 0 0
06973-
0
06973-
1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 CODE IN HEX CODE IN HEX
Figure 7. Histogram of a DC Input at the Code Center Figure 10. Histogram of a DC Input at the Code Transition
0 100 fS = 1.33MSPS –20 fIN = 10kHz 99 SNR = 98.2dB ) THD = –110.6dB 98 le –40 a SFDR = 112.5dB c SINAD = 98.0dB 97 –60 Full S 96 B) of –80 d dB 95 ( E –100 NR ( S D 94 –120 LITU P 93 M A –140 92 –160
033
91
039
–180
06973-
90
06973-
0 100 200 300 400 500 600 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 FREQUENCY (kHz) INPUT LEVEL (dB of Full Scale)
Figure 8. FFT Plot Figure 11. SNR vs. Input Level Rev. B | Page 8 of 24 Document Outline FEATURES APPLICATIONS APPLICATION DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE SINGLE-TO-DIFFERENTIAL DRIVER VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE MODE, 3-CS WIRE WITHOUT BUSY INDICATOR CS MODE, 3-WIRE WITH BUSY INDICATOR CS MODE, 4-WIRE WITHOUT BUSY INDICATOR CS MODE, 4-WIRE WITH BUSY INDICATOR CHAIN MODE WITHOUT BUSY INDICATOR CHAIN MODE WITH BUSY INDICATOR APPLICATION HINTS LAYOUT EVALUATING THE AD7984 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE