Datasheet AD7949-EP (Analog Devices) - 10

AD7949-EP Enhanced Product 90 90 85 85 80 80 B) B) d d 75 75 NR ( S INAD ( S 70 70 VDD = VREF = 5V, –0.5dB VDD = VREF = 5V, –0.5dB VDD = VREF = 5V, –10dB VDD = VREF = 5V, –10dB 65 VDD = VREF = 2.5V, –0.5dB 65 VDD = VREF = 2.5V, –0.5dB VDD = VREF = 2.5V, –10dB VDD = VREF = 2.5V, –10dB 60 60 0 50 100 150 200
011
0 50 100 150 200
014
FREQUENCY (kHz) FREQUENCY (kHz)
09822- 09822- Figure 11. SNR vs. Frequency Figure 14. SINAD vs. Frequency
88 15.5 130 –60 SNR 125 –65 SINAD ENOB 120 –70 86 15.0 115 –75 110 –80 B) d SFDR 84 14.5 ts) B) 105 –85 B) Bi d d INAD ( B ( 100 –90 S DR ( HD ( NO F T 82 14.0 E S 95 –95 NR, S 90 THD –100 85 –105 80 13.5 80 –110 75 –115 78 13.0 70 –120 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
012
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
015
REFERENCE VOLTAGE (V) REFERENCE VOLTAGE (V)
09822- 09822- Figure 12. SNR, SINAD, and ENOB vs. Reference Voltage Figure 15. SFDR and THD vs. Reference Voltage
90 –90 fIN = 20kHz fIN = 20kHz VDD = VREF = 5V 85 –95 VDD = VREF = 2.5V VDD = V 80 REF = 5V B) B) d d VDD = VREF = 2.5V 75 –100 NR ( HD ( S T 70 –105 65 60 –110 –55 –35 –15 5 25 45 65 85 105 125
013
–55 –35 –15 5 25 45 65 85 105 125
016
TEMPERATURE (°C) TEMPERATURE (°C)
09822- 09822- Figure 13. SNR vs. Temperature Figure 16. THD vs. Temperature Rev. B | Page 10 of 12 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 Outline Dimensions Ordering Guide