Dual Channel, 12-Bit, 40 MSPS MCM A/D Converter with DC-Coupled Analog Input Signal Conditioning (AD9042 Core ADC)
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16 /10 — AD10242. 67.0. –90. IN A1. IN B1. 66.5. T = –55 C. –80. 66.0. –70. 65.5. …
Revision
D
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English
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
AD1024267.0–90IN A1IN B166.5T = –55 C–8066.0–7065.5T = +25 CIN B3IN A365.0–6064.5–50T = +125 C64.0–40SNR – dB63.5ISOLATION – dB –3063.0ENCODE = 40MSPS AENCODE = 40MSPSIN = –1dBFS–2062.5AIN = –1dBFS62.0–1061.505102010152025303540ANALOG INPUT FREQUENCY – MHzANALOG INPUT FREQUENCY – MHz TPC 7. SNR vs. AIN TPC 10. Isolation vs. Frequency 7090AIN = 9.9MHz AIN = –1dBFS8068SFDRSFDR (dBFS)706660SNR50SFDR (dBc)6440SFDR = 75dB6230SNR, WORST SPUR – dB, dBc2060ENCODE = 40MSPSWORST-CASE SPURIOUS – dBc, dBFS10AIN = 9.98MHz5805101520253035404550–70–60–50–40–30–20–100SAMPLE RATE – MSPSANALOG INPUT POWER LEVEL – dBFS TPC 8. SNR and Harmonics vs. Encode Rate TPC 11. Single Tone SFDR (AIN @ 9.98) vs. Power Level 2.0100901.5801.0SFDR (dBFS)GAIN700.560SFDR (dBc)05040–0.5OFFSETERROR – % FS30SFDR = 75dB–1.020–1.5WORST-CASE SPURIOUS – dBc, dBFSENCODE = 40MSPS10AIN = 19.9MHz–2.00–55–35–15525456585105125–70–60–50–40–30–20–100TEMPERATURE – CANALOG 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