Datasheet AD7690 (Analog Devices) - 10
| Hersteller | Analog Devices |
| Beschreibung | 18-Bit, 1.5 LSB INL, 400 kSPS PulSAR® Differential ADC in MSOP/QFN |
| Seiten / Seite | 25 / 10 — Data Sheet. AD7690. TYPICAL PERFORMANCE CHARACTERISTICS. 1.0. 1.5. … |
| Revision | C |
| Dateiformat / Größe | PDF / 684 Kb |
| Dokumentensprache | Englisch |
Data Sheet. AD7690. TYPICAL PERFORMANCE CHARACTERISTICS. 1.0. 1.5. POSITIVE INL = +0.42LSB NEGATIVE INL = –0.6LSB. 0.5. S L. L (. DNL. –0.5
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Data Sheet AD7690 TYPICAL PERFORMANCE CHARACTERISTICS 1.0 1.5 POSITIVE INL = +0.42LSB NEGATIVE INL = –0.6LSB 1.0 0.5 0.5 ) B) B S L 0 LS ( 0 L ( DNL IN –0.5 –0.5 –1.0 –1.0 –1.5 0 65536 131072 196608 262144
027
0 65536 131072 196608 262144
025
CODE
05792-
CODE
05792- Figure 7. Integral Nonlinearity vs. Code Figure 10. Differential Nonlinearity vs. Code
80k 60k VDD = REF = 5V VDD = REF = 5V 53936 52500 70k 67198 50k 60k 40k 50k S S UNT 40k UNT 30k CO 31666 CO 30k 27546 20k 20k 12623 11212 10k 10k 2614 1991 0 0 39 18 0 0 0 0 2 533 263 3 0 0 0 0 55 57 58 59 5A 5B 5C 5D 5E 5F 60
037
31 32 33 34 35 36 37 38 39 3A 3B 3C
039
CODE IN HEX
05792-
CODE IN HEX
05792- Figure 8. Histogram of a DC Input at the Code Center Figure 11. Histogram of a DC Input at the Code Transition
0 105 –110 fS = 400kSPS f 104 –112 –20 IN = 1.99kHz SNR = 101.4dB ) THD = –122dB 103 –114 le –40 SFDR = 130dB a c SINAD = 101.3dB 102 –116 –60 SNR Full S 101 –118 B) B) of –80 d d 100 –120 dB ( NR ( HD ( E –100 S T D 99 –122 –120 LITU 98 –124 P M A –140 97 –126 THD –160 96 –128 –180 95 –130 0 20 40 60 80 100 120 140 160 180 200
026
–10 –8 –6 –4 –2 0
047
FREQUENCY (kHz) INPUT LEVEL (dB)
05792- 05792- Figure 9. Fast Fourier Transform Plot Figure 12. SNR, THD vs. Input Level Rev. C | Page 9 of 24 Document Outline FEATURES APPLICATIONS APPLICATION EXAMPLE GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS 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 SUPPLYING THE ADC FROM THE REFERENCE DIGITAL INTERFACE CS MODE, 3-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 AD7690 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
027
0 65536 131072 196608 262144
025
CODE
05792-
CODE
05792- Figure 7. Integral Nonlinearity vs. Code Figure 10. Differential Nonlinearity vs. Code
80k 60k VDD = REF = 5V VDD = REF = 5V 53936 52500 70k 67198 50k 60k 40k 50k S S UNT 40k UNT 30k CO 31666 CO 30k 27546 20k 20k 12623 11212 10k 10k 2614 1991 0 0 39 18 0 0 0 0 2 533 263 3 0 0 0 0 55 57 58 59 5A 5B 5C 5D 5E 5F 60
037
31 32 33 34 35 36 37 38 39 3A 3B 3C
039
CODE IN HEX
05792-
CODE IN HEX
05792- Figure 8. Histogram of a DC Input at the Code Center Figure 11. Histogram of a DC Input at the Code Transition
0 105 –110 fS = 400kSPS f 104 –112 –20 IN = 1.99kHz SNR = 101.4dB ) THD = –122dB 103 –114 le –40 SFDR = 130dB a c SINAD = 101.3dB 102 –116 –60 SNR Full S 101 –118 B) B) of –80 d d 100 –120 dB ( NR ( HD ( E –100 S T D 99 –122 –120 LITU 98 –124 P M A –140 97 –126 THD –160 96 –128 –180 95 –130 0 20 40 60 80 100 120 140 160 180 200
026
–10 –8 –6 –4 –2 0
047
FREQUENCY (kHz) INPUT LEVEL (dB)
05792- 05792- Figure 9. Fast Fourier Transform Plot Figure 12. SNR, THD vs. Input Level Rev. C | Page 9 of 24 Document Outline FEATURES APPLICATIONS APPLICATION EXAMPLE GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS 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 SUPPLYING THE ADC FROM THE REFERENCE DIGITAL INTERFACE CS MODE, 3-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 AD7690 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE