Datasheet AD7625 (Analog Devices) - 10

Data Sheet AD7625 TYPICAL PERFORMANCE CHARACTERISTICS 0 0 INPUT TONE = 2kHz –20 SNR = 93.16dB –20 SINAD = 92.09dB THD = –110.45dB –40 –40 SFDR = 111.37dB –60 –60 B) B) d d ( ( –80 –80 UDE UDE IT IT L –100 L –100 P P AM –120 AM –120 –140 –140 –160 –160 –180
5
–180
06 00
0 0.5 1.0 1.5 2.0 2.5 3.0
0
0 5 10 15 20 25 30 35 40 45
2- 2- 65
FREQUENCY (MHz)
65 07
FREQUENCY (kHz)
07 Figure 3. FFT 2 kHz Input Tone, Full View Figure 6. FFT 2 kHz Input Tone, Zoom In on Input Tone and Harmonics
0 0 INPUT TONE = 50kHz INPUT TONE = 100kHz SNR = 93.04dB SNR = 92.91dB –20 SINAD = 92.63dB –20 SINAD = 92.55dB THD = –103.57dB THD = –103.11dB –40 SFDR = –102.69dB –40 SFDR = –103.41dB –60 ) –60 B) B d d ( ( –80 –80 UDE UDE IT IT L –100 L –100 P P AM –120 AM –120 –140 –140 –160 –160 –180 –180
8 07 0 0
0 0.5 1.0 1.5 2.0 2.5 3.0
0
0 0.5 1.0 1.5 2.0 2.5 3.0
2- 2- 65 65
FREQUENCY (MHz)
07
FREQUENCY (MHz)
07 Figure 4. FFT 50 kHz Input Tone Figure 7. FFT 100 kHz Input Tone
0.5 1.0 0.4 0.8 0.3 0.6 0.2 0.4 ) 0.1 ) 0.2 B S B L S ( 0 L 0 ( L DNL –0.1 IN –0.2 –0.2 –0.4 –0.3 –0.6 –0.4 –0.8 –0.5 –1.0
4
0 16,384 32,768 49,152 65,536
15 1 0
0 16,384 32,768 49,152 65,536
0 2- 2- 65 65
CODE
07
CODE
07 Figure 5. Differential Nonlinearity vs. Code Figure 8. Integral Nonlinearity vs. Code Rev. B | Page 9 of 24 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER INFORMATION TRANSFER FUNCTIONS ANALOG INPUTS TYPICAL CONNECTION DIAGRAM DRIVING THE AD7625 Differential Analog Input Source Single-Ended-to-Differential Driver VOLTAGE REFERENCE OPTIONS POWER SUPPLY Power-Up DIGITAL INTERFACE Conversion Control Echoed-Clock Interface Mode Self-Clocked Interface Mode APPLICATIONS INFORMATION LAYOUT, DECOUPLING, AND GROUNDING Exposed Pad VDD1 Supply Routing and Decoupling VIO Supply Decoupling Layout and Decoupling of Pin 25 to Pin 32 OUTLINE DIMENSIONS ORDERING GUIDE NOTES NOTES