Datasheet LTC1863, LTC1867 (Analog Devices) - 6

LTC1863/LTC1867
TYPICAL PERFORMANCE CHARACTERISTICS (LTC1867) Integral Nonlinearity vs Differential Nonlinearity vs Output Code Output Code Histogram for 4096 Conversions
2.0 2.0 2500 1.5 1.5 2152 2000 1.0 1.0 0.5 0.5 1500 0 0 INL (LBS) DNL (LSB) COUNTS 935 – 0.5 –0.5 1000 – 1.0 –1.0 579 500 – 1.5 –1.5 276 122 1 26 5 0 – 2.0 –2.0 0 0 16384 32768 49152 65536 0 16384 32768 49152 65536 –4 –3 –2 –1 0 1 2 3 4 OUTPUT CODE OUTPUT CODE CODE 18637 GO1 18637 GO2 18637 GO3
4096 Points FFT Plot (fIN = 1kHz, 4096 Points FFT Plot (fIN = 1kHz) REFCOMP = External 5V) Crosstalk vs Input Frequency
0 0 –80 SNR = 88.8dB SNR = 90dB SINAD = 87.9dB SINAD = 88.5dB –20 THD = 95dB –20 THD = 94dB –90 fSAMPLE = 200ksps fSAMPLE = 200ksps –40 INTERNAL REFERENCE –40 VREF = 0V REFCOMP = EXT 5V –100 –60 –60 –110 ADJACENT PAIR –80 –80 AMPLITUDE (dB) AMPLITUDE (dB) –120 –100 –100 SELECTED CHANNEL (dB) NONADJACENT PAIR RESULTING AMPLITUDE ON –120 –120 –130 –140 –140 –140 0 25 50 75 100 0 25 50 75 100 1 10 100 1000 FREQUENCY (kHz) FREQUENCY (kHz) ACTIVE CHANNEL INPUT FREQUENCY (kHz) 18637 G04 18637 G05 18637 G06
Signal-to-Noise Ratio vs Signal-to-(Noise + Distortion) vs Total Harmonic Distortion vs Frequency Input Frequency Input Frequency
100 100 –20 90 90 –30 80 80 –40 70 70 –50 60 60 –60 50 50 –70 AMPLITUDE (dB) AMPLITUDE (dB) AMPLITUDE (dB) 40 40 –80 30 30 –90 20 20 –100 1 10 100 1 10 100 1 10 100 INPUT FREQUENCY (kHz) INPUT FREQUENCY (kHz) INPUT FREQUENCY (kHz) 18637 G07 18637 G08 18637 G09 Rev. E 6 For more information www.analog.com Document Outline Features Applications Block Diagram Description Absolute Maximum Ratings Order Information Pin Configuration Converter Characteristics Dynamic Accuracy Analog Input Internal Reference Characteristics Digital Inputs and Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Typical Connection Diagram Test Circuits Timing Diagrams Applications Information Package Description Revision History Related Parts