Datasheet LTC2381-16 (Analog Devices) - 6

LTC2381-16
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VDD = 2.5V, OVDD = 2.5V, REF = 2.5V, fSMPL = 250ksps, unless otherwise noted. Integral Nonlinearity Differential Nonlinearity vs Output Code vs Output Code DC Histogram
2.0 1.0 1600000 1.5 1400000 1.0 0.5 1200000 0.5 1000000 0.0 0.0 800000 COUNTS –0.5 600000 INL ERROR (LSB) DNL ERROR (LSB) –1.0 400000 –0.5 –1.5 200000 –2.0 –1.0 0 –32768 –16384 0 16384 32768 –32768 –16384 0 16384 32768 –2 –1 0 1 2 OUTPUT CODE OUTPUT CODE CODE 238116 G01 238116 G02 238116 G03
32k Point FFT fS = 250ksps, THD, Harmonics fIN = 20kHz SNR, SINAD vs Input Frequency vs Input Frequency
0 93 –90 SNR = 91.8dB –20 THD = –106dB –95 SINAD = 91.6dB 92.5 –40 SFDR = 107dB –100 –60 92 SNR –105 THD 3RD –80 91.5 –110 2ND –100 SINAD –115 AMPLITUDE (dBFS) –120 SNR, SINAD (dBFS) 91 –140 HARMONICS, THD (dBFS) –120 90.5 –160 –125 –180 90 –130 0 25 50 75 100 125 0 25 50 75 100 0 25 50 75 100 FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) 238116 G05 238116 G06 238116 G04
SNR, SINAD vs Input level, fIN = 20kHz SNR, SINAD vs Temperature THD, Harmonics vs Temperature
93.0 93.00 –100 92.5 92.50 –105 SNR SNR SINAD THD 92.0 92.00 SINAD –110 2ND SNR, SINAD (dBFS) SNR, SINAD (dBFS) 91.5 91.50 HARMONICS, THD (dBFS) –115 3RD 91.0 91.00 –120 –40 –30 –20 –10 0 –55 –35 –15 5 25 45 65 85 105 125 –55 –35 –15 5 25 45 65 85 105 125 INPUT LEVEL (dB) TEMPERATURE (ºC) TEMPERATURE (°C) 238116 G07 238116 G08 238116 G09 238116fa 6 For more information www.linear.com/LTC2381-16