Datasheet AD7915, AD7916 (Analog Devices) - 9

Data Sheet AD7915/AD7916 0 0 fS = 1MSPS fS = 1MSPS –20 fIN = 1kHz –20 fIN = 1kHz ) SNR = 95.06dB ) SNR = 91.21dB E THD = –114.79dB E THD = –118.74dB –40 –40 SFDR = –116.64dB SFDR = –108.7dB CAL SINAD = 95.02dB CAL SINAD = 91.21dB S –60 S L –60 L UL UL –80 f F –80 f F o o B B d –100 d ( –100 ( UDE –120 UDE –120 IT IT L L P P –140 M –140 M A A –160 –160 –180
0
–180
1
0 100 200 300 400 500
-50
0 100 200 300 400 500
-50
FREQUENCY (kHz)
583
FREQUENCY (kHz)
583 12 12 Figure 11. AD7915 FFT Plot, REF = 5 V Figure 14. AD7915 FFT Plot, REF = 2.5 V
45000 40000 40000 35000 S 35000 S 30000 NCE NCE E 30000 E 25000 25000 CCURR CCURR 20000 O O F 20000 F O O R R 15000 15000 BE BE 10000 NUM 10000 NUM 5000 5000 0
1
0
1 12
FFE1 FFE2 FFE3 FFE4 FFE5 FFE6 FFE7 FFE8 FFE9 FFEA
4
FFD2 FFD3 FFD4 FFD5 FFD6 FFD7 FFD8 FFD9 FFDA FFDB
4 3- 3- 58 58
CODES IN HEX
12
CODES IN HEX
12 Figure 12. Histogram of a DC Input at the Code Center, REF = 5 V Figure 15. Histogram of a DC Input at the Code Transition, REF = 5 V
45000 98 40000 97 S 35000 NCE 30000 96 25000 CURRE B) d C 95 O F 20000 NR ( S R O 15000 94 BE NUM 10000 93 5000 0 92
14 15
FFF1 FFF2 FFF3 FFF4 FFF5 FFF6 FFF7 FFF8 FFF9 FFFA FFFB
4
–10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0
4 3- 3- 58 58
CODES IN HEX
12
INPUT LEVEL (dB)
12 Figure 13. Histogram of a DC Input at the Code Center, REF = 2.5 V Figure 16. SNR vs. Input Level Rev. 0 | Page 9 of 26 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATIONS CIRCUIT 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-WIRE, WITHOUT BUSY INDICATOR MODE 3-WIRE, WITH BUSY INDICATOR MODE, 4-WIRE, WITHOUT BUSY INDICATOR MODE 4-WIRE WITH BUSY INDICATOR CHAIN MODE, WITHOUT BUSY INDICATOR CHAIN MODE WITH BUSY INDICATOR APPLICATIONS INFORMATION INTERFACING TO BLACKFIN DSP LAYOUT EVALUATING AD7915/AD7916 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE NOTES