Datasheet LTC2378-18 (Analog Devices) - 6

LTC2378-18
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
1.5 0.5 80000 σ = 0.7 0.4 70000 1.0 0.3 60000 0.2 0.5 0.1 50000 0.0 0.0 40000 –0.1 COUNTS 30000 INL ERROR (LSB) –0.5 DNL ERROR (LSB) –0.2 20000 –0.3 –1.0 –0.4 10000 –1.5 –1.5 0 –131072 –65536 0 65536 131072 –131072 –65536 0 65536 131072 –2 –1 0 1 2 3 OUTPUT CODE OUTPUT CODE CODE 237818 G01 237818 G02 237818 G03
32k Point FFT fS = 1Msps, THD, Harmonics fIN = 2kHz SNR, SINAD vs Input Frequency vs Input Frequency
0 103 –80 SNR = 102.3dB THD –20 THD = –124dB 102 2ND SINAD = 102.2dB –90 3RD –40 101 SNR SFDR = 126dB –60 100 SINAD –100 99 –80 98 –110 –100 97 AMPLITUDE (dBFS) –120 SNR, SINAD (dBFS) –120 96 –140 HARMONICS, THD (dBFS) 95 –130 –160 94 –180 93 –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) 237818 G04 237818 G05 237818 G06
SNR, SINAD vs Input level, SNR, SINAD vs Reference THD, Harmonics vs Reference fIN = 2kHz Voltage, fIN = 2kHz Voltage, fIN = 2kHz
103.0 103 –100 –105 102 –110 102.5 SNR 101 –115 SNR SINAD –120 102.0 100 SINAD –125 THD –130 3RD SNR, SINAD (dBFS) SNR, SINAD (dBFS) 99 –135 101.5 HARMONICS, THD (dBFS) 2ND 98 –140 –145 101.0 97 –150 –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) 237818 G07 237818 G08 237818 G09 237818fa 6 For more information www.linear.com/LTC2378-18 Document Outline Features Description Applications 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 Board Layout Package Description Revision History Typical Application Related Parts