Datasheet LTC2372-16 (Analog Devices) - 8

LTC2372-16
Typical perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFIN = 2.048V, Fully Differential Range, VCM = 2.048V, fSMPL = 500ksps, unless otherwise noted. Integral Nonlinearity Differential Nonlinearity vs Output Code vs Output Code DC Histogram (Near Zero-Scale)
1.0 0.5 250000 σ = 0.21 0.8 0.4 0.6 0.3 200000 0.4 0.2 0.2 0.1 150000 –0.0 –0.0 –0.2 –0.1 COUNTS 100000 INL ERROR (LSB) –0.4 DNL ERROR (LSB) –0.2 –0.6 –0.3 50000 –0.8 –0.4 –1.0 –0.5 0 0 16384 32768 49152 65536 0 16384 32768 49152 65536 –1 0 1 OUTPUT CODE OUTPUT CODE CODE 237216 G01 237216 G02 237216 G03
32k Point FFT fSMPL = 500ksps, 32k Point FFT fSMPL = 500ksps, DC Histogram (Near Full-Scale) fIN = 1kHz fIN = 1kHz, REFBUF = 5V
250000 0 0 σ = 0.25 SNR = 96.1dB SNR = 96.4dB –20 THD = –114.4dB –20 THD = –111.3dB SINAD = 96dB SINAD = 96.2dB 200000 –40 SFDR = 116.9dB –40 SFDR = 112.3dB –60 –60 150000 –80 –80 COUNTS –100 –100 100000 –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) 50000 –140 –140 –160 –160 0 –180 –180 32744 32745 32746 0 50 100 150 200 250 0 50 100 150 200 250 CODE FREQUENCY (kHz) FREQUENCY (kHz) 237216 G04 237216 G05 237216 G06
THD, Harmonics vs REFBUF, SNR, SINAD vs Input Level, SNR, SINAD vs REFBUF, fIN = 1kHz fIN = 1kHz fIN = 1kHz
97.0 –105.0 97.0 SNR 96.5 –110.0 SNR 96.5 THD 96.0 SINAD 3RD –115.0 SINAD 96.0 95.5 –120.0 95.5 2ND 95.0 SNR, SINAD (dBFS) –125.0 95.0 SNR, SINAD (dBFS) THD, HARMONICS (dBFS) 94.5 –130.0 94.5 94.0 –135.0 94.0 2.5 3 3.5 4 4.5 5 2.5 3 3.5 4 4.5 5 –40 –30 –20 –10 0 REFBUF VOLTAGE (V) REFBUF VOLTAGE (V) INPUT LEVEL (dB) 237216 G07 237216 G08 237216 G09 237216f 8 For more information www.linear.com/LTC2372-16 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Timing Diagrams Board Layout Schematics Package Description Typical Application Related Parts