Datasheet LTC2389-16 (Analog Devices) - 7

LTC2389-16
t ypical perFormance characteristics TA = 25°C, VDD = 5V, OVDD = 2.5V, VREF = 4.096V External Reference, Fully Differential Range (PD/FD = 0V), VCM = 2.048V, fSMPL = 2.5Msps, unless otherwise noted. Integral Nonlinearity Differential Nonlinearity vs Output Code vs Output Code DC Histogram (Zero-Scale)
1.0 0.5 280000 INTERNAL REF INTERNAL REF 0.8 EXTERNAL REF 0.4 EXTERNAL REF 240000 0.6 0.3 0.4 0.2 200000 0.2 0.1 160000 0 0 –0.2 –0.1 COUNTS 120000 INL ERROR (LSB) –0.4 DNL ERROR (LSB) –0.2 80000 –0.6 –0.3 40000 –0.8 –0.4 –1.0 –0.5 0 0 16384 32768 49152 65536 0 16384 32768 49152 65536 –2 –1 0 1 2 OUTPUT CODE OUTPUT CODE CODE 238916 G01 238916 G02 238916 G03
Internal Reference Output 32k Point FFT fSMPL = 2.5Msps, DC Histogram (Near Full-Scale) vs Temperature fIN = 2kHz
280000 4.097 0 T SNR = 96.0dB C = 8ppm/°C –20 THD = –116dB 240000 4.096 SINAD = 96.0dB –40 SFDR = 117dB 200000 4.095 –60 4.094 160000 –80 4.093 COUNTS 120000 –100 4.092 AMPLITUDE (dBFS) –120 80000 REFERENCE OUTPUT (V) 4.091 –140 40000 4.090 –160 0 4.089 –180 32762 32763 32764 32765 32766 –55 –35 –15 5 25 45 65 85 105 125 0 250 500 750 1000 1250 CODE TEMPERATURE (°C) FREQUENCY (kHz) 238916 G04 238916 G05 238916 G06
SNR, SINAD vs Input Level, SNR, SINAD vs Input Frequency THD, Harmonics vs Input Frequency fIN = 2kHz
97 –85 97.0 96 –90 95 SNR –95 96.5 SNR 94 –100 93 SINAD –105 SINAD 92 96.0 –110 91 THD SNR, SINAD (dB) –115 SNR, SINAD (dB) 90 3RD THD, HARMONICS (dB) 95.5 89 –120 2ND 88 –125 87 –130 95.0 0 12.5 25 37.5 50 62.5 75 87.5 100 0 12.5 25 37.5 50 62.5 75 87.5 100 –40 –30 –20 –10 0 FREQUENCY (kHz) FREQUENCY (kHz) INPUT LEVEL (dB) 238916 G07 238916 G08 238916 G09 238916f 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Analog Input Converter Characteristics Dynamic Accuracy Reference Characteristics Digital Inputs And Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagrams Applications Information Package Description Related Parts Typical Application