Datasheet LTC2321-12 (Analog Devices) - 7

LTC2321-12
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
1.0 1.00 70000 0.80 60000 0.60 0.5 0.40 50000 0.20 40000 0 0 –0.20 COUNTS 30000 INL ERROR (LSB) DNL ERROR (LSB) –0.40 20000 –0.5 –0.60 10000 –0.80 –1.0 –1.00 0 –4096 –2048 0 2048 4096 –4096 –2048 0 2048 4096 –2 –1 0 1 2 OUTPUT CODE 232112 G01 OUTPUT CODE CODE 232112 G02 232112 G03
32k Point FFT, fS =2Msps, SNR, SINAD vs Input Frequency THD, Harmonics vs Input fIN = 500kHz (50kHz to 1MHz) Frequency (50kHz to 1MHz)
0 74.0 –85 SNR = 72.9dB THD THD = –86.1dB –20 SINAD = 72.8dB 73.5 –90 SFDR = 89.5dB –40 SNR 73.0 –95 –60 SINAD HD2 72.5 –80 –100 HD3 AMPLITUDE (dBFS) 72.0 –100 SNR, SINAD (dBFS) THD, HARMONICS (dBFS) –105 –120 71.5 –140 71.0 –110 0 0.2 0.4 0.6 0.8 1 0 0.5 1 0 0.25 0.50 0.75 1 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 232112 G04 232112 G05 232112 G06
THD, Harmonics vs SNR, SINAD vs Reference Voltage, 8k Point FFT, IMD, fS = 2Msps, Input Common Mode f + – IN = 500kHz VIN = 100kHz, VIN = 500kHz
–75 0 73 SNR –80 SINAD –20 –85 THD 71 –40 –90 –60 –95 69 HD2 –80 –100 SNR, SINAD (dBFS) AMPLITUDE (dBFS) THD, HARMONICS (dBFS) HD3 –100 67 –105 –120 –110 65 –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) 232112 G07 REF (V) 232112 G08 232112 G09 232112fb For more information www.linear.com/LTC2321-12 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics 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 Package Description Related Parts