Datasheet LTC2321-14 (Analog Devices) - 6

LTC2321-14
Typical perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFOUT1,2 = 4.096V, fSMPL = 2Msps, unless otherwise noted. (Note 16) Integral Nonlinearity Differential Nonlinearity vs Output Code vs Output Code DC Histogram
3 1.0 35000 2 30000 0.5 25000 1 20000 0 0 COUNTS 15000 INL ERROR (LSB) –1 DNL ERROR (LSB) 10000 –0.5 –2 5000 –3 –1.0 0 –16384 –8192 0 8192 16384 –16384 –8192 0 8192 16384 –3 –2 –1 0 1 2 3 CODE OUTPUT CODE OUTPUT CODE 232114 G03 232114 G01 232114 G02
32k Point FFT, fS = 2Msps, SNR, SINAD vs Input Frequency THD, Harmonics fIN = 500kHz (100kHz to 1MHz) vs Input Frequency
0 81.0 –85 SNR = 80.2dB THD = –92.5dB –20 SINAD = 79.9dB 80.5 SFDR = 98.6dB –90 –40 SNR 80.0 THD –60 –95 SINAD 79.5 –80 –100 AMPLITUDE (dBFS) 79.0 H2 –100 SNR, SINAD LEVEL (dBFS) THD, HARMONICS (dBFS) –105 H3 –120 78.5 –140 78.0 –110 0 0.2 0.4 0.6 0.8 1.0 0 0.5 1 0 0.5 1 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 232114 G04 232114 G05 232114 G06
THD, Harmonics vs Input 32k Point FFT, IMD, fS = 2Msps, Common Mode (500kHz) SNR and SINAD vs V + – REF at 500kHz VIN = 100kHz, VIN = 500kHz
–75 0 82 F1 = 100kHz –80 SNR –20 F2 = 500kHz 80 IMD = –97dBc –85 78 SINAD –40 –90 –60 THD 76 –95 74 –80 H2 –100 SNR, SINAD (dBFS) AMPLITUDE (dBFS) THD, HARMONICS (dBFS) 72 –100 –105 H3 70 –120 –110 68 –140 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 0.2 0.4 0.6 0.8 1.0 INPUT COMMON MODE (V) V FREQUENCY (MHz) 232114 G07 REF (V) 232114 G08 232114 G09 232114fc 6 For more information www.linear.com/LTC2321-14 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Digital Inputs And Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Typical Application Package Description Revision History Related Parts