Datasheet LTC2378-20 (Analog Devices) - 6

LTC2378-20
Typical perForMance characTerisTics TA = 25°C, VDD = 2.5V, OVDD = 2.5V, VCM = 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 50000 σ = 2.3 1.5 0.4 45000 0.3 40000 1.0 0.2 35000 0.5 0.1 30000 0 0.0 25000 COUNTS –0.5 –0.1 20000 INL ERROR (ppm) DNL ERROR (ppm) –0.2 15000 –1.0 –0.3 10000 –1.5 –0.4 5000 –2.0 –0.5 0 –524288 –262144 0 262144 524288 –524288 –262144 0 262144 524288 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 OUTPUT CODE OUTPUT CODE OUTPUT CODE 237820 G01 237820 G02 237820 G03
128k Point FFT fS = 1Msps, THD, Harmonics fIN = 2kHz SNR, SINAD vs Input Frequency vs Input Frequency
0 108 –90 SNR = 104dB THD –20 THD = –128dB 106 –95 2ND SINAD = 104dB 3RD SNR –100 –40 SFDR = 132dB 104 –105 –60 102 –110 –80 SINAD 100 –115 –100 98 –120 AMPLITUDE (dBFS) –120 SNR, SINAD (dBFS) –125 96 HARMONICS, THD (dBFS) –140 –130 –160 94 –135 –180 92 –140 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) 237820 G04 237820 G05 237820 G06
SNR, SINAD vs Input level, SNR, SINAD vs Reference THD, Harmonics vs Reference fIN = 2kHz Voltage, fIN = 2kHz Voltage, fIN = 2kHz
105.0 105 –110 104 –115 103 104.5 THD SNR 102 SNR –120 101 SINAD 3RD SINAD 104.0 100 –125 99 SNR, SINAD (dBFS) SNR, SINAD (dBFS) –130 98 103.5 HARMONICS, THD (dBFS) 97 –135 96 2ND 103.0 95 –140 –40 –30 –20 –10 0 2.5 3.0 3.5 4.0 4.5 5.0 2.5 3.0 3.5 4.0 4.5 5.0 INPUT LEVEL (dB) REFERENCE VOLTAGE (V) REFERENCE VOLTAGE (V) 237820 G07 237820 G08 237820 G09 237820fb 6 For more information www.linear.com/LTC2378-20 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration 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 Board Layout Package Description Revision History Typical Application Related Parts