Datasheet LTC2372-18 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | 18-Bit, 500ksps, 8-Channel SAR ADC with 100dB SNR |
| 页数 / 页 | 50 / 8 — Typical. perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, … |
| 文件格式/大小 | PDF / 2.0 Mb |
| 文件语言 | 英语 |
Typical. perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFIN = 2.048V,
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文件文字版本
LTC2372-18
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 (Zero-Scale)
2.0 1.0 140000 σ = 0.85 1.5 0.8 120000 0.6 1.0 0.4 100000 0.5 0.2 80000 0 0 COUNTS 60000 –0.5 –0.2 INL ERROR (LSB) DNL ERROR (LSB) –0.4 –1.0 40000 –0.6 –1.5 20000 –0.8 –2.0 –1.0 0 0 65536 131072 196608 262144 0 65536 131072 196608 262144 –4 –3 –2 –1 0 1 2 3 4 OUTPUT CODE OUTPUT CODE CODE 237218 G01 237218 G02 237218 G03
32k Point FFT fSMPL = 500ksps, 32k Point FFT fSMPL = 500ksps, DC Histogram (Near Full-Scale) fIN = 1kHz fIN = 1kHz, REFBUF = 5V
120000 0 0 σ = 1.00 SNR = 100.7dB SNR = 102.3dB –20 THD = –114dB –20 THD = –111.3dB 100000 SINAD = 100.5dB SINAD = 101.8dB –40 SFDR = 117.1dB –40 SFDR = 111.9dB 80000 –60 –60 –80 –80 60000 COUNTS –100 –100 40000 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) –120 –140 –140 20000 –160 –160 0 –180 –180 131052 131054 131056 131058 131060 0 50 100 150 200 250 0 50 100 150 200 250 CODE FREQUENCY (kHz) FREQUENCY (kHz) 237218 G04 237218 G05 237218 G06
THD, Harmonics vs REFBUF, SNR, SINAD vs Input Level, SNR, SINAD vs REFBUF, fIN = 1kHz fIN = 1kHz fIN = 1kHz
103 –105 101.0 102 SNR –110 SNR 101 100.5 SINAD SINAD 100 –115 THD 3RD 100.0 99 –120 SNR, SINAD (dBFS) 98 SNR, SINAD (dBFS) THD, HARMONICS (dBFS) 99.5 –125 97 2ND 96 –130 99.0 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) 237218 G07 237218 G08 237218 G09 237218f 8 For more information www.linear.com/LTC2372-18 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 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
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 (Zero-Scale)
2.0 1.0 140000 σ = 0.85 1.5 0.8 120000 0.6 1.0 0.4 100000 0.5 0.2 80000 0 0 COUNTS 60000 –0.5 –0.2 INL ERROR (LSB) DNL ERROR (LSB) –0.4 –1.0 40000 –0.6 –1.5 20000 –0.8 –2.0 –1.0 0 0 65536 131072 196608 262144 0 65536 131072 196608 262144 –4 –3 –2 –1 0 1 2 3 4 OUTPUT CODE OUTPUT CODE CODE 237218 G01 237218 G02 237218 G03
32k Point FFT fSMPL = 500ksps, 32k Point FFT fSMPL = 500ksps, DC Histogram (Near Full-Scale) fIN = 1kHz fIN = 1kHz, REFBUF = 5V
120000 0 0 σ = 1.00 SNR = 100.7dB SNR = 102.3dB –20 THD = –114dB –20 THD = –111.3dB 100000 SINAD = 100.5dB SINAD = 101.8dB –40 SFDR = 117.1dB –40 SFDR = 111.9dB 80000 –60 –60 –80 –80 60000 COUNTS –100 –100 40000 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) –120 –140 –140 20000 –160 –160 0 –180 –180 131052 131054 131056 131058 131060 0 50 100 150 200 250 0 50 100 150 200 250 CODE FREQUENCY (kHz) FREQUENCY (kHz) 237218 G04 237218 G05 237218 G06
THD, Harmonics vs REFBUF, SNR, SINAD vs Input Level, SNR, SINAD vs REFBUF, fIN = 1kHz fIN = 1kHz fIN = 1kHz
103 –105 101.0 102 SNR –110 SNR 101 100.5 SINAD SINAD 100 –115 THD 3RD 100.0 99 –120 SNR, SINAD (dBFS) 98 SNR, SINAD (dBFS) THD, HARMONICS (dBFS) 99.5 –125 97 2ND 96 –130 99.0 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) 237218 G07 237218 G08 237218 G09 237218f 8 For more information www.linear.com/LTC2372-18 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 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