Datasheet LTC2326-18 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | 18-Bit, 250ksps, ±10.24V True Bipolar, Pseudo-Differential Input ADC with 95dB SNR |
| Pages / Page | 26 / 7 — Typical perForMance characTerisTics. TA = 25°C, VDD = 5V, OVDD = 2.5V, … |
| File Format / Size | PDF / 518 Kb |
| Document Language | English |
Typical perForMance characTerisTics. TA = 25°C, VDD = 5V, OVDD = 2.5V, REFIN = 2.048V,
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LTC2326-18
Typical perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFIN = 2.048V, fSMPL = 250ksps, unless otherwise noted. Integral Nonlinearity Differential Nonlinearity vs Output Code vs Output Code DC Histogram
3.0 0.5 3000 2.5 σ = 1.6 0.4 2.0 2500 0.3 1.5 1.0 0.2 2000 0.5 0.1 0 0.0 1500 –0.5 –0.1 COUNTS INL ERROR (LSB) –1.0 DNL ERROR (LSB) –0.2 1000 –1.5 –2.0 –0.3 500 –2.5 –0.4 –3.0 –0.5 0 –131072 –65536 0 65536 131072 –131072 –65536 0 65536 131072 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 OUTPUT CODE OUTPUT CODE CODE 232618 G01 232618 G02 232618 G03
32k Point FFT fS = 250ksps, THD, Harmonics fIN = 2kHz SNR, SINAD vs Input Frequency vs Input Frequency
0 100 –70 SNR = 95.3dB SNR –20 THD = –113dB –80 SINAD = 95.2dB –40 SFDR = –117dB 90 SINAD –90 –60 –100 –80 80 –100 –110 AMPLITUDE (dBFS) –120 SNR, SINAD (dBFS) 70 –120 THD, HARMONICS (dBFS) –140 –130 THD –160 2ND 3RD –180 60 –140 0 25 50 75 100 125 0 25 50 75 100 125 0 25 50 75 100 125 FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) 232618 G06 232618 G04 232618 G05V
SNR, SINAD vs Input Level, SNR, SINAD vs Temperature, THD, Harmonics vs Temperature, fIN = 2kHz fIN = 2kHz fIN = 2kHz
96.0 98 –105 97 –110 95.5 96 THD SNR SNR 3RD 95 –115 SINAD SINAD 2ND MAGNITUDE (dBFS) 95.0 SNR, SINAD (dBFS) 94 THD, HARMONICS (dBFS) –120 93 94.5 92 –125 –40 –30 –20 –10 0 –40 –25 –10 5 20 35 50 65 80 95 110 125 –40 –25 –10 5 20 35 50 65 80 95 110 125 INPUT LEVEL (dB) TEMPERATURE (°C) TEMPERATURE (°C) 232618 G09 232618 G07 232618 G08 232618fb For more information www.linear.com/LTC2326-18 7 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 Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFIN = 2.048V, fSMPL = 250ksps, unless otherwise noted. Integral Nonlinearity Differential Nonlinearity vs Output Code vs Output Code DC Histogram
3.0 0.5 3000 2.5 σ = 1.6 0.4 2.0 2500 0.3 1.5 1.0 0.2 2000 0.5 0.1 0 0.0 1500 –0.5 –0.1 COUNTS INL ERROR (LSB) –1.0 DNL ERROR (LSB) –0.2 1000 –1.5 –2.0 –0.3 500 –2.5 –0.4 –3.0 –0.5 0 –131072 –65536 0 65536 131072 –131072 –65536 0 65536 131072 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 OUTPUT CODE OUTPUT CODE CODE 232618 G01 232618 G02 232618 G03
32k Point FFT fS = 250ksps, THD, Harmonics fIN = 2kHz SNR, SINAD vs Input Frequency vs Input Frequency
0 100 –70 SNR = 95.3dB SNR –20 THD = –113dB –80 SINAD = 95.2dB –40 SFDR = –117dB 90 SINAD –90 –60 –100 –80 80 –100 –110 AMPLITUDE (dBFS) –120 SNR, SINAD (dBFS) 70 –120 THD, HARMONICS (dBFS) –140 –130 THD –160 2ND 3RD –180 60 –140 0 25 50 75 100 125 0 25 50 75 100 125 0 25 50 75 100 125 FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) 232618 G06 232618 G04 232618 G05V
SNR, SINAD vs Input Level, SNR, SINAD vs Temperature, THD, Harmonics vs Temperature, fIN = 2kHz fIN = 2kHz fIN = 2kHz
96.0 98 –105 97 –110 95.5 96 THD SNR SNR 3RD 95 –115 SINAD SINAD 2ND MAGNITUDE (dBFS) 95.0 SNR, SINAD (dBFS) 94 THD, HARMONICS (dBFS) –120 93 94.5 92 –125 –40 –30 –20 –10 0 –40 –25 –10 5 20 35 50 65 80 95 110 125 –40 –25 –10 5 20 35 50 65 80 95 110 125 INPUT LEVEL (dB) TEMPERATURE (°C) TEMPERATURE (°C) 232618 G09 232618 G07 232618 G08 232618fb For more information www.linear.com/LTC2326-18 7 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 Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts
