Datasheet AD7949-EP (Analog Devices) - 11

Enhanced Product AD7949-EP –60 2750 100 2.5V INTERNAL REF fS = 200kSPS 2500 4.096V INTERNAL REF 90 –70 INTERNAL BUFFER, TEMP ON INTERNAL BUFFER, TEMP OFF 2250 80 EXTERNAL REF, TEMP ON –80 A) EXTERNAL REF, TEMP OFF µ A) µ ( 2000 VIO 70 ( B) NT d NT –90 1750 60 HD ( T CURRE 1500 50 –100 DD CURRE IO V V VDD = V 1250 40 REF = 5V, –0.5dB –110 VDD = VREF = 2.5V, –0.5dB VDD = VREF = 2.5V, –10dB 1000 30 VDD = VREF = 5V, –10dB –120 750 20 0 50 100 150 200
017
2.5 3.0 3.5 4.0 4.5 5.0 5.5
020
FREQUENCY (kHz) VDD SUPPLY (V)
09822- 09822- Figure 17. THD vs. Frequency Figure 20. Operating Currents vs. Supply
90 3000 180 fIN = 20kHz 89 fS = 200kSPS 2750 160 88 87 2500 140 86 VDD = VREF = 5V A) VDD = 5V, INTERNAL 4.096V REF µ A) µ ( 2250 120 ( 85 B) NT NT d 84 2000 100 VDD = V NR ( REF = 2.5V S 83 VDD = 5V, EXTERNAL REF CURRE 1750 80 IO 82 DD CURRE V V 81 1500 60 VDD = 2.5, EXTERNAL REF VIO 80 1250 40 79 78 1000 20 –10 –8 –6 –4 –2 0
018
–55 –35 –15 5 25 45 65 85 105 125
021
INPUT LEVEL (dB) TEMPERATURE (°C)
09822- 09822- Figure 18. SNR vs. Input Level Figure 21. Operating Currents vs. Temperature
2 B) S L R ( 1 RRO N E AI 0 R AND G RRO E T –1 UNIPOLAR ZERO E S UNIPOLAR GAIN F F BIPOLAR ZERO O BIPOLAR GAIN –2 –55 –35 –15 5 25 45 65 85 105 125
019
TEMPERATURE (°C)
09822- Figure 19. Offset and Gain Errors vs. Temperature Rev. B | Page 11 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