Datasheet AD7683 (Analog Devices) - 10

Data Sheet AD7683 TYPICAL PERFORMANCE CHARACTERISTICS 3 3 POSITIVE INL = +0.43LSB POSITIVE DNL = +0.43LSB NEGATIVE INL = –0.97LSB NEGATIVE DNL = –0.41LSB 2 2 1 1 ) B B) S S L 0 L ( 0 L ( L IN DN –1 –1 –2 –2
12 1 1 -0 0 1- 301 30
–3
04
–3
04
0 16384 32768 49152 65536 0 16384 32768 49152 65536 CODE CODE
Figure 8. Integral Nonlinearity vs. Code Figure 11. Differential Nonlinearity vs. Code
7000 120000 62564 VDD = REF = 2.5V 102287 VDD = REF = 5V 6000 100000 5000 80000 S 4000 S 35528 UNT UNT 60000 CO 3000 CO 25440 40000 2000 1000 20000 15152 13619
09
4604
10 -0
2755
0
8 50 130
1- 301
0 0 1 0 0 0 0 6 0 0
30
0
04
0
04
79FD 79FE 79FF 7A00 7A01 7A02 7A03 7A04 7A05 7A06 7A07 7A08 7A0E 7A0F 7A10 7A11 7A12 7A13 7A14 7A15 7A16 CODE IN HEX CODE IN HEX
Figure 9. Histogram of a DC Input at the Code Center Figure 12. Histogram of a DC Input at the Code Center
0 0 16384 POINT FFT 16384 POINT FFT VDD = REF = 5V –20 VDD = REF = 2.5V f –20 f ) S = 100kSPS S = 100kSPS E fIN = 20.43kHz ) f L –40 E IN = 20.43kHz A SNR = 92.7dB –40 SNR = 88.7dB THD = –105.7dB CAL THD = –102.6dB SC –60 SFDR = –106.4dB S –60 SFDR = –104.6dB LL L U UL F –80 F F –80 F O B –100 d B O –100 d E ( ( D –120 U –120 UDE IT IT PL –140 L M P –140 A M A –160
08
–160
-0 07 0 1- 301
–180
30 04
–180
04
0 10 20 30 40 50 0 10 20 30 40 50 FREQUENCY (kHz) FREQUENCY (kHz)
Figure 10. FFT Plot Figure 13. FFT Plot Rev. B | Page 9 of 16 Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specifications Timing Specifications Timing and Circuit Diagrams Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Terminology Typical Performance Characteristics Applications Information Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply Digital Interface Layout Evaluating the AD7683 Performance Outline Dimensions Ordering Guide