Datasheet AD10242 (Analog Devices) - 10

AD10242 67.0 –90 IN A1 IN B1 66.5 T = –55 C –80 66.0 –70 65.5 T = +25 C IN B3 IN A3 65.0 –60 64.5 –50 T = +125 C 64.0 –40 SNR – dB 63.5 ISOLATION – dB –30 63.0 ENCODE = 40MSPS A ENCODE = 40MSPS IN = –1dBFS –20 62.5 AIN = –1dBFS 62.0 –10 61.5 0 5 10 20 10 15 20 25 30 35 40 ANALOG INPUT FREQUENCY – MHz ANALOG INPUT FREQUENCY – MHz
TPC 7. SNR vs. AIN TPC 10. Isolation vs. Frequency
70 90 AIN = 9.9MHz AIN = –1dBFS 80 68 SFDR SFDR (dBFS) 70 66 60 SNR 50 SFDR (dBc) 64 40 SFDR = 75dB 62 30 SNR, WORST SPUR – dB, dBc 20 60 ENCODE = 40MSPS WORST-CASE SPURIOUS – dBc, dBFS 10 AIN = 9.98MHz 58 0 5 10 15 20 25 30 35 40 45 50 –70 –60 –50 –40 –30 –20 –10 0 SAMPLE RATE – MSPS ANALOG INPUT POWER LEVEL – dBFS
TPC 8. SNR and Harmonics vs. Encode Rate TPC 11. Single Tone SFDR (AIN @ 9.98) vs. Power Level
2.0 100 90 1.5 80 1.0 SFDR (dBFS) GAIN 70 0.5 60 SFDR (dBc) 0 50 40 –0.5 OFFSET ERROR – % FS 30 SFDR = 75dB –1.0 20 –1.5 WORST-CASE SPURIOUS – dBc, dBFS ENCODE = 40MSPS 10 AIN = 19.9MHz –2.0 0 –55 –35 –15 5 25 45 65 85 105 125 –70 –60 –50 –40 –30 –20 –10 0 TEMPERATURE – C ANALOG INPUT POWER LEVEL – dBFS
TPC 9. Offset and Gain Error vs. Temperature TPC 12. Single Tone SFDR (AIN @ 19.9) vs. Power Level REV. D –9– Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PRODUCT HIGHLIGHTS FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS1 EXPLANATION OF TEST LEVELS PIN CONFIGURATION PIN FUNCTION DESCRIPTIONS DEFINITION OF SPECIFICATIONS Analog Bandwidth Aperture Delay Aperture Uncertainty (Jitter) Differential Nonlinearity Encode Pulsewidth/Duty Cycle Harmonic Distortion Integral Nonlinearity Minimum Conversion Rate Maximum Conversion Rate Output Propagation Delay Overvoltage Recovery Time Power Supply Rejection Ratio Signal-to-Noise and Distortion (SINAD) Signal-to-Noise Ratio (SNR, without Harmonics) Spurious-Free Dynamic Range (SFDR) Transient Response Two-Tone Intermodulation Distortion Rejection Two-Tone SFDR EQUIVALENT CIRCUITS Typical Performance Characteristics THEORY OF OPERATION APPLYING THE AD10242 Encoding the AD10242 Performance Improvements USING THE FLEXIBLE INPUT GROUNDING AND DECOUPLING Analog and Digital Grounding LAYOUT INFORMATION EVALUATION BOARD OUTLINE DIMENSIONS Ordering Guide Revision History