Datasheet LTC2344-18 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | Quad, 18-Bit, 400ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range |
| Pages / Page | 40 / 10 — TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VDD = 5V, OVDD = 2.5V, … |
| File Format / Size | PDF / 2.3 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VDD = 5V, OVDD = 2.5V, Internal
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LTC2344-18
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VDD = 5V, OVDD = 2.5V, Internal Reference and Buffer (VREFBUF = 4.096V), fSMPL = 400ksps, unless otherwise noted. 32k Point Arbitrary Two-Tone FFT fSMPL = 400kHz, IN+ = –7dBFS 2kHz 32k Point FFT fSMPL = 400kHz, SNR, SINAD vs VREFBUF, Sine, IN– = –7dBFS 3.1kHz Sine fIN = 2kHz fIN = 2kHz
0 0 100 ±4.096V RANGE 0V TO 4.096V RANGE ±VREFBUF RANGE –20 ARBITRARY DRIVE –20 UNIPOLAR DRIVE (IN– = 0V) FULLY DIFFERENTIAL DRIVE (IN– = –IN+) SFDR = 119dB –40 –40 SNR = 89.4dB 98 SNR = 95.3dB THD = –109dB –60 –60 SINAD = 89.4dB SNR SFDR = 111dB 96 –80 –80 SINAD –100 –100 94 –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) SNR, SINAD (dBFS) –140 –140 92 –160 –160 –180 –180 90 0 40 80 120 160 200 0 40 80 120 160 200 2.5 3 3.5 4 4.5 5 FREQUENCY (kHz) FREQUENCY (kHz) REFBUF VOLTAGE (V) 234418 G10 234418 G11 234418 G12
THD, Harmonics vs VREFBUF, SNR, SINAD THD, Harmonics fIN = 2kHz vs Input Frequency vs Input Frequency
–100 106 –70 ±VREFBUF RANGE ±4.096V RANGE ±4.096V RANGE –105 FULLY DIFFERENIAL DRIVE (IN– = –IN+) FULLY DIFFERENTIAL DRIVE (IN– = –IN+) FULLY DIFFERENTIAL DRIVE (IN– = –IN+) 102 –80 –110 THD 98 –90 –115 SNR 2ND –120 94 –100 SINAD –125 90 –110 THD 3RD SNR, SINAD (dBFS) THD, HARMONICS (dBFS) –130 THD, HARMONICS (dBFS) 2ND 86 –120 –135 3RD –140 82 –130 2.5 3 3.5 4 4.5 5 100 1k 10k 100k 100 1k 10k 100k REFBUF VOLTAGE (V) FREQUENCY (Hz) FREQUENCY (Hz) 234418 G13 234418 G14 234418 G15
THD, Harmonics vs Input SNR, SINAD vs Input Level, CMRR vs Input Frequency and Common Mode, fIN = 2kHz fIN = 2kHz Channel
–100 96.0 130 ±4.096V RANGE ±4.096V RANGE ±4.096V RANGE 1VP–P FULLY DIFFERENTIAL DRIVE FULLY DIFFERENTIAL DRIVE (IN– = –IN+) IN+ = IN– = 3.6VP–P SINE 120 –110 95.8 ALL CHANNELS 110 –120 95.6 THD 100 SNR –130 3RD 95.4 90 CMRR (dB) SINAD SNR, SINAD (dBFS) 80 THD, HARMONICS (dBFS) –140 2ND 95.2 70 –150 95.0 60 0 1 2 3 4 5 –40 –30 –20 –10 0 10 100 1k 10k 100k 1M INPUT COMMON MODE (V) INPUT LEVEL (dBFS) FREQUENCY (Hz) 234418 G16 234418 G17 234418 G18 234418f 10 For more information www.linear.com/LTC2344-18 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 Configuration Tables Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VDD = 5V, OVDD = 2.5V, Internal Reference and Buffer (VREFBUF = 4.096V), fSMPL = 400ksps, unless otherwise noted. 32k Point Arbitrary Two-Tone FFT fSMPL = 400kHz, IN+ = –7dBFS 2kHz 32k Point FFT fSMPL = 400kHz, SNR, SINAD vs VREFBUF, Sine, IN– = –7dBFS 3.1kHz Sine fIN = 2kHz fIN = 2kHz
0 0 100 ±4.096V RANGE 0V TO 4.096V RANGE ±VREFBUF RANGE –20 ARBITRARY DRIVE –20 UNIPOLAR DRIVE (IN– = 0V) FULLY DIFFERENTIAL DRIVE (IN– = –IN+) SFDR = 119dB –40 –40 SNR = 89.4dB 98 SNR = 95.3dB THD = –109dB –60 –60 SINAD = 89.4dB SNR SFDR = 111dB 96 –80 –80 SINAD –100 –100 94 –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) SNR, SINAD (dBFS) –140 –140 92 –160 –160 –180 –180 90 0 40 80 120 160 200 0 40 80 120 160 200 2.5 3 3.5 4 4.5 5 FREQUENCY (kHz) FREQUENCY (kHz) REFBUF VOLTAGE (V) 234418 G10 234418 G11 234418 G12
THD, Harmonics vs VREFBUF, SNR, SINAD THD, Harmonics fIN = 2kHz vs Input Frequency vs Input Frequency
–100 106 –70 ±VREFBUF RANGE ±4.096V RANGE ±4.096V RANGE –105 FULLY DIFFERENIAL DRIVE (IN– = –IN+) FULLY DIFFERENTIAL DRIVE (IN– = –IN+) FULLY DIFFERENTIAL DRIVE (IN– = –IN+) 102 –80 –110 THD 98 –90 –115 SNR 2ND –120 94 –100 SINAD –125 90 –110 THD 3RD SNR, SINAD (dBFS) THD, HARMONICS (dBFS) –130 THD, HARMONICS (dBFS) 2ND 86 –120 –135 3RD –140 82 –130 2.5 3 3.5 4 4.5 5 100 1k 10k 100k 100 1k 10k 100k REFBUF VOLTAGE (V) FREQUENCY (Hz) FREQUENCY (Hz) 234418 G13 234418 G14 234418 G15
THD, Harmonics vs Input SNR, SINAD vs Input Level, CMRR vs Input Frequency and Common Mode, fIN = 2kHz fIN = 2kHz Channel
–100 96.0 130 ±4.096V RANGE ±4.096V RANGE ±4.096V RANGE 1VP–P FULLY DIFFERENTIAL DRIVE FULLY DIFFERENTIAL DRIVE (IN– = –IN+) IN+ = IN– = 3.6VP–P SINE 120 –110 95.8 ALL CHANNELS 110 –120 95.6 THD 100 SNR –130 3RD 95.4 90 CMRR (dB) SINAD SNR, SINAD (dBFS) 80 THD, HARMONICS (dBFS) –140 2ND 95.2 70 –150 95.0 60 0 1 2 3 4 5 –40 –30 –20 –10 0 10 100 1k 10k 100k 1M INPUT COMMON MODE (V) INPUT LEVEL (dBFS) FREQUENCY (Hz) 234418 G16 234418 G17 234418 G18 234418f 10 For more information www.linear.com/LTC2344-18 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 Configuration Tables Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Typical Application Related Parts
