Datasheet AD7699 (Analog Devices) - 10

AD7699 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 5 V, VREF = 5 V, VIO = VDD, unless otherwise noted.
1.5 1.5 1.0 1.0 0.5 0.5 S) S) 0 SB SB (L (L 0 –0.5 –0.5 –1.0 –1.5 –1.0 0 16,384 32,768 49,152 65,536
006
0 16,384 32,768 49,152 65,536
009
CODES CODES
07354- 07354- Figure 6. Integral Nonlinearity vs. Code Figure 9. Differential Nonlinearity vs. Code
250,000 250,000 σ = 0.51 LSB σ = 0.78 LSB 220,840 VREF = 5V VREF = 4.096V 200,000 200,000 191,013 150,000 150,000 S S UNT UNT CO CO 100,000 100,000 50,000 50,000 38,420 26,926 31,411 13,341 0 0 3 10 0 0 0 0 119 157 0 0 0
005
0
008
7FF9 7FFA 7FFB 7FFC 7FFD 7FFE 7FFF 8000 8001 7FF9 7FFA 7FFB 7FFC 7FFD 7FFE 7FFF 8000 8001 CODE IN HEX
07354-
CODE IN HEX
07354- Figure 7. Histogram of a DC Input at Code Center Figure 10. Histogram of a DC Input at Code Center
0 0 VREF = 5V VREF = 4.096V f f –20 S = 500kSPS –20 S = 500kSPS f f ) IN = 19.94kHz ) IN = 19.94kHz SNR = 92.3dB SNR = 91.1dB LE –40 LE A SINAD = 91.5dB –40 A SINAD = 90.4dB C THD = –98dB C THD = –98dB –60 SFDR = 100dB –60 SFDR = 100dB LL S SECOND HARMONIC = –111dB LL S SECOND HARMONIC = –104dB –80 THIRD HARMONIC = –101dB –80 THIRD HARMONIC = –101dB OF FU OF FU dB –100 dB –100 ( ( E E D D –120 –120 LITU LITU P –140 P –140 M M A A –160 –160 –180 –180 0 25 50 75 100 125 150 175 200 225 250
007
0 25 50 75 100 125 150 175 200 225 250
010
FREQUENCY (kHz) FREQUENCY (kHz)
07354- 07354- Figure 8. 20 kHz FFT, VREF = 5 V Figure 11. 20 kHz FFT, VREF = 4.096 V Rev. F | Page 10 of 32 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION OVERVIEW CONVERTER OPERATION TRANSFER FUNCTIONS TYPICAL CONNECTION DIAGRAMS Unipolar or Bipolar Bipolar Single Supply ANALOG INPUTS Input Structure Selectable Low-Pass Filter Input Configurations Sequencer Examples Source Resistance DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE OUTPUT/INPUT Internal Reference/Temperature Sensor External Reference and Internal Buffer External Reference Reference Decoupling POWER SUPPLY SUPPLYING THE ADC FROM THE REFERENCE DIGITAL INTERFACE READING/WRITING DURING CONVERSION, FAST HOSTS READING/WRITING DURING ACQUISITION, ANY SPEED HOSTS READING/WRITING SPANNING CONVERSION, ANY SPEED HOST CONFIGURATION REGISTER, CFG GENERAL TIMING WITHOUT A BUSY INDICATOR GENERAL TIMING WITH A BUSY INDICATOR READ/WRITE SPANNING CONVERSION WITHOUT A BUSY INDICATOR READ/WRITE SPANNING CONVERSION WITH A BUSY INDICATOR CHANNEL SEQUENCER Examples APPLICATION HINTS LAYOUT EVALUATING AD7699 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE