Datasheet AD9221, AD9223, AD9220 (Analog Devices) - 8

AD9221/AD9223/AD9220 AD9220–Typical Performance Characteristics (AVDD = 5 V, DVDD = 5 V, fSAMPLE = 10 MSPS, TA = 25 C) 1.0 1.0 8,123,672 0.8 0.8 0.6 0.6 0.4 0.4 0.2 0.2 0.0 0.0 HITS –0.2 –0.2 INL – LSBs DNL – LSBs –0.4 –0.4 –0.6 –0.6 134,613 130,323 –0.8 –0.8 –1.0 –1.0 1 4095 1 4095 N–1 N N+1 CODE CODE CODE
TPC 19. Typical DNL TPC 20. Typical INL TPC 21. “Grounded-Input” Histogram (Input Span = 2 V p-p)
80 –50 80 –55 75 75 –0.5dB –0.5dB –60 70 70 –65 –6.0dB –6dB 65 65 –70 –20dB 60 –75 60 –6dB THD – dB –80 SINAD – dB 55 SINAD – dB –20dB 55 –20.0dB –85 –0.5dB 50 50 –90 45 45 –95 40 –100 40 0.1 1.0 10.0 0.5 1.0 10.0 0.1 1.0 10.0 FREQUENCY – MHz FREQUENCY – MHz FREQUENCY – MHz
TPC 22. SINAD vs. Input Frequency TPC 23. THD vs. Input Frequency TPC 24. SINAD vs. Input Frequency (Input Span = 2.0 V p-p, V (Input Span = 2.0 V p-p, V (Input Span = 5.0 V p-p, V CM = 2.5 V) CM = 2.5 V) CM = 2.5 V)
–50 –60 90 –55 –65 80 5V p-p SFDR –60 –70 70 –20.0dB –65 –75 2V p-p 60 SNR –0.5dB –70 –80 50 THD – dB –6.0dB THD – dB –75 –85 40 SNR/SFDR – dB –80 –90 30 –85 –95 20 –90 –100 10 0.1 1.0 10.0 1 10 15 –60 –50 –40 –30 –20 –10 0 FREQUENCY – MHz SAMPLE RATE – MSPS AIN – dBFS
TPC 25. THD vs. Input Frequency TPC 26. THD vs. Clock Frequency TPC 27. SNR/SFDR vs. AIN (Input (Input Span = 5.0 V p-p, VCM = 2.5 V) (AIN = –0.5 dB, fIN = 1.0 MHz, Amplitude) (fIN = 5.0 MHz, Input VCM = 2.5 V) Span = 2 V p-p, VCM = 2.5 V) –8– REV. E Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS DC SPECIFICATIONS AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ORDERING GUIDE PIN CONFIGURATION PIN FUNCTION DESCRIPTIONS DEFINITIONS OF SPECIFICATIONS Integral Nonlinearity (INL) Differential Nonlinearity (DNL, No Missing Codes) Zero Error Gain Error Temperature Drift Power Supply Rejection Aperture Jitter Aperture Delay Signal-to-Noise and Distortion (S/N+D, SINAD) Ratio Effective Number of Bits (ENOB) Total Harmonic Distortion (THD) Signal-to-Noise Ratio (SNR) Spurious Free Dynamic Range (SFDR) Typical Performance Characteristics INTRODUCTION ANALOG INPUT AND REFERENCE OVERVIEW ANALOG INPUT OPERATION REFERENCE OPERATION DRIVING THE ANALOG INPUTS Introduction SINGLE-ENDED MODE OF OPERATION DC COUPLING AND INTERFACE ISSUES Simple Op Amp Buffer Op Amp with DC Level Shifting AC COUPLING AND INTERFACE ISSUES Simple AC Interface Alternative AC Interface Op Amp Selection Guide DIFFERENTIAL MODE OF OPERATION REFERENCE CONFIGURATIONS USING THE INTERNAL REFERENCE Single-Ended Input with 0 to 2 VREF Range Single-Ended or Differential Input, VCM = 2.5 V VINA Resistor Programmable Reference USING AN EXTERNAL REFERENCE Variable Input Span with VCM = 2.5 V Single-Ended Input with 0 to 2 VREF Range Low Cost/Power Reference DIGITAL INPUTS AND OUTPUTS Digital Outputs Out Of Range (OTR) Digital Output Driver Considerations (DVDD) Clock Input and Considerations GROUNDING AND DECOUPLING Analog and Digital Grounding Analog and Digital Supply Decoupling APPLICATIONS Direct IF Down Conversion Using the AD9220 Multichannel Data Acquisition with Autocalibration OUTLINE DIMENSIONS Revision History