Datasheet LTC2373-18 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 18-Bit, 1Msps, 8-Channel SAR ADC with 100dB SNR |
| Pages / Page | 50 / 10 — Typical. perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, … |
| File Format / Size | PDF / 2.0 Mb |
| Document Language | English |
Typical. perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFIN = 2.048V,
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LTC2373-18
Typical perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFIN = 2.048V, Pseudo-Differential Unipolar Range, fSMPL = 1Msps, unless otherwise noted. Integral Nonlinearity vs Output Differential Nonlinearity vs Code Output Code DC Histogram (Zero-Scale)
2.0 1.0 80000 σ = 1.54 1.5 0.8 0.6 1.0 60000 0.4 0.5 0.2 0 0 40000 COUNTS –0.5 –0.2 INL ERROR (LSB) DNL ERROR (LSB) –0.4 –1.0 20000 –0.6 –1.5 –0.8 –2.0 –1.0 0 0 65536 131072 196608 262144 0 65536 131072 196608 262144 4 6 8 10 12 14 16 18 20 OUTPUT CODE OUTPUT CODE CODE 237318 G19 237318 G20 237318 G21
32k Point FFT f 32k Point FFT f SMPL = 1Msps, SMPL = 1Msps, DC Histogram (Near Full-Scale) f f IN = 1kHz IN = 1kHz, REFBUF = 5V
60000 0 0 σ = 1.89 SNR = 95.1dB SNR = 96.9dB –20 THD = –110dB –20 THD = –111dB SINAD = 94.9dB SINAD = 96.7dB –40 SFDR = 113.3dB –40 SFDR = 112.8dB 40000 –60 –60 –80 –80 COUNTS –100 –100 20000 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) –120 –140 –140 –160 –160 0 –180 –180 262122 262128 262134 262140 0 100 200 300 400 500 0 100 200 300 400 500 CODE FREQUENCY (kHz) FREQUENCY (kHz) 237318 G22 237318 G23 237318 G24
THD, Harmonics vs REFBUF, SNR, SINAD vs Input Level, SNR, SINAD vs REFBUF, fIN = 1kHz fIN = 1kHz fIN = 1kHz
98 –105 96.0 97 THD SNR –110 96 95.5 SINAD 95 2ND –115 94 95.0 SNR 93 –120 SNR, SINAD (dBFS) 3RD SNR, SINAD (dBFS) SINAD 92 THD, HARMONICS (dBFS) 94.5 –125 91 90 –130 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) 237318 G25 237318 G26 237318 G27 237318f 10 For more information www.linear.com/LTC2373-18 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information 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
Typical perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFIN = 2.048V, Pseudo-Differential Unipolar Range, fSMPL = 1Msps, unless otherwise noted. Integral Nonlinearity vs Output Differential Nonlinearity vs Code Output Code DC Histogram (Zero-Scale)
2.0 1.0 80000 σ = 1.54 1.5 0.8 0.6 1.0 60000 0.4 0.5 0.2 0 0 40000 COUNTS –0.5 –0.2 INL ERROR (LSB) DNL ERROR (LSB) –0.4 –1.0 20000 –0.6 –1.5 –0.8 –2.0 –1.0 0 0 65536 131072 196608 262144 0 65536 131072 196608 262144 4 6 8 10 12 14 16 18 20 OUTPUT CODE OUTPUT CODE CODE 237318 G19 237318 G20 237318 G21
32k Point FFT f 32k Point FFT f SMPL = 1Msps, SMPL = 1Msps, DC Histogram (Near Full-Scale) f f IN = 1kHz IN = 1kHz, REFBUF = 5V
60000 0 0 σ = 1.89 SNR = 95.1dB SNR = 96.9dB –20 THD = –110dB –20 THD = –111dB SINAD = 94.9dB SINAD = 96.7dB –40 SFDR = 113.3dB –40 SFDR = 112.8dB 40000 –60 –60 –80 –80 COUNTS –100 –100 20000 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) –120 –140 –140 –160 –160 0 –180 –180 262122 262128 262134 262140 0 100 200 300 400 500 0 100 200 300 400 500 CODE FREQUENCY (kHz) FREQUENCY (kHz) 237318 G22 237318 G23 237318 G24
THD, Harmonics vs REFBUF, SNR, SINAD vs Input Level, SNR, SINAD vs REFBUF, fIN = 1kHz fIN = 1kHz fIN = 1kHz
98 –105 96.0 97 THD SNR –110 96 95.5 SINAD 95 2ND –115 94 95.0 SNR 93 –120 SNR, SINAD (dBFS) 3RD SNR, SINAD (dBFS) SINAD 92 THD, HARMONICS (dBFS) 94.5 –125 91 90 –130 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) 237318 G25 237318 G26 237318 G27 237318f 10 For more information www.linear.com/LTC2373-18 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information 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
