Datasheet AD9221, AD9223, AD9220 (Analog Devices) - 7

AD9221/AD9223/AD9220 AD9223–Typical Performance Characteristics (AVDD = 5 V, DVDD = 5 V, fSAMPLE = 3.0 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 DNL – LSBs –0.2 INL – LSBs –0.4 –0.4 –0.6 –0.6 130,323 96,830 –0.8 –0.8 –1.0 –1.0 0 4095 0 4095 N–1 N N+1 CODE CODE CODE
TPC 10. Typical DNL TPC 11. Typical INL TPC 12. “Grounded-Input” Histogram (Input Span = 2 V p-p)
80 –50 80 –55 75 75 –0.5dB –0.5dB –60 70 –20.0dB 70 –65 –6.0dB 65 –70 65 –6.0dB –75 60 –0.5dB 60 THD – dB –80 SINAD – dB 55 –6.0dB SINAD – dB 55 –20.0dB –85 –20.0dB 50 50 –90 45 –95 45 40 –100 40 0.1 1.0 10.0 0.1 1.0 10.0 0.1 1.0 10.0 FREQUENCY – MHz FREQUENCY – MHz FREQUENCY – MHz
TPC 13. SINAD vs. Input Frequency TPC 14. THD vs. Input Frequency TPC 15. SINAD vs. Input Frequency (Input Span = 2.0 V p-p, VCM = 2.5 V) (Input Span = 2.0 V p-p, VCM = 2.5 V) (Input Span = 5.0 V p-p, VCM = 2.5 V)
–50 –60 100 –55 –65 90 –60 80 –70 –65 –20.0dB 70 –75 –70 SFDR 5V p-p 60 –75 –6.0dB –80 50 THD – dB –80 THD – dB –85 SNR –0.5dB 2V p-p SNR/SFDR – dB 40 –85 –90 –90 30 –95 –95 20 –100 –100 10 0.1 1.0 10.0 0.4 0.6 0.8 1 2 3 4 5 6 –60 –50 –40 –30 –20 –10 0 FREQUENCY – MHz SAMPLE RATE – MSPS AIN – dBFS
TPC 16. THD vs. Input Frequency TPC 17. THD vs. Sample Rate TPC 18. SNR/SFDR vs. AIN (Input (Input Span = 5.0 V p-p, VCM = 2.5 V) (A Amplitude) (f IN = –0.5 dB, fIN = 500 kHz, IN = 1.5 MHz, Input V Span = 2 V p-p, V CM = 2.5 V) CM = 2.5 V) REV. E –7– 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