Datasheet LTC2368-18 (Analog Devices) - 6

LTC2368-18
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VDD = 2.5V, OVDD = 2.5V, REF = 5V, fSMPL = 1Msps, unless otherwise noted. Integral Nonlinearity Differential Nonlinearity vs Output Code vs Output Code DC Histogram
2.0 0.5 40000 σ = 1.3 1.5 0.4 35000 0.3 1.0 30000 0.2 0.5 0.1 25000 0.0 0.0 20000 COUNTS –0.5 –0.1 15000 INL ERROR (LSB) DNL ERROR (LSB) –0.2 –1.0 10000 –0.3 –1.5 –0.4 5000 –2.0 –0.5 0 0 65536 131072 196608 262144 0 65536 131072 196608 262144 131067 131069 131071 131073 131075 131077 OUTPUT CODE OUTPUT CODE CODE 236818 G01 236818 G02 236818 G03
32k Point FFT fS = 1Msps, THD, Harmonics fIN = 2kHz SNR, SINAD vs Input Frequency vs Input Frequency
0 100 –60 SNR = 97.2dB –20 THD = –120dB –70 SINAD = 97.1dB 95 –40 –80 SFDR = 120dB SNR –90 –60 90 THD SINAD –100 –80 2ND 85 –110 –100 3RD –120 AMPLITUDE (dBFS) –120 SNR, SINAD (dBFS) 80 –130 –140 HARMONICS, THD (dBFS) 75 –140 –160 –150 –180 70 –160 0 100 200 300 400 500 0 25 50 75 100 125 150 175 200 0 25 50 75 100 125 150 175 200 FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) 236818 G04 236818 G05 236818 G06
SNR, SINAD vs Input level, SNR, SINAD vs Reference THD, Harmonics vs Reference fIN = 2kHz Voltage, fIN = 2kHz Voltage, fIN = 2kHz
98.0 98 –100 97 –105 97.5 SNR SNR –110 96 SINAD THD –115 97.0 SINAD 95 –120 2ND 96.5 94 –125 3RD 93 –130 SNR, SINAD (dBFS) 96.0 SNR, SINAD (dBFS) –135 92 HARMONICS, THD (dBFS) 95.5 –140 91 –145 95.0 90 –150 –40 –30 –20 –10 0 2.5 3 3.5 4 4.5 5 2.5 3 3.5 4 4.5 5 INPUT LEVEL (dB) REFERENCE VOLTAGE (V) REFERENCE VOLTAGE (V) 236818 G07 236818 G08 236818 G09 236818f 6 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Converter Characteristics Dynamic Accuracy Reference Input Digital Inputs And Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Timing Diagrams Board Layout Package Description Typical Application Related Parts