Datasheet LTC2341-18 (Analog Devices) - 10
| 制造商 | Analog Devices |
| 描述 | Dual, 18-Bit, 666ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range |
| 页数 / 页 | 38 / 10 — 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, Internal
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LTC2341-18
Typical perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, Internal Reference and Buffer (VREFBUF = 4.096V), fSMPL = 666ksps, unless otherwise noted. 32k Point Arbitrary Two-Tone FFT fSMPL = 666kHz, IN+ = –7dBFS 2kHz 32k Point FFT fSMPL = 666kHz, SNR, SINAD vs VREFBUF, Sine, IN– = –7dBFS 3.3kHz 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 = 112dB –40 –40 SNR = 89.3dB 98 SNR = 95.2dB THD = –113dB –60 –60 SINAD = 89.2dB SNR SFDR = 113dB 96 –80 –80 SINAD –100 –100 94 –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) SNR, SINAD (dBFS) –140 –140 92 –160 –160 –180 –180 90 0 111 222 333 0 111 222 333 2.5 3 3.5 4 4.5 5 FREQUENCY (kHz) FREQUENCY (kHz) REFBUF VOLTAGE (V) 234118 G10 234118 G11 234118 G12
THD, Harmonics vs VREFBUF, SNR, SINAD THD, Harmonics fIN = 2kHz vs Input Frequency vs Input Frequency
–100 106 –60 ±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 –70 –110 THD 98 –80 –115 94 –90 –120 SNR THD 3RD 90 –100 –125 2ND SINAD 2ND SNR, SINAD (dBFS) 86 –110 THD, HARMONICS (dBFS) –130 THD, HARMONICS (dBFS) –135 82 –120 3RD –140 78 –130 2.5 3 3.5 4 4.5 5 100 1k 10k 100k 1M 100 1k 10k 100k 1M REFBUF VOLTAGE (V) FREQUENCY (Hz) FREQUENCY (Hz) 234118 G13 234418 G14 234118 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 THD 95.6 100 SNR 3RD –130 95.4 90 CMRR (dB) SINAD SNR, SINAD (dBFS) 2ND 80 THD, HARMONICS (dBFS) –140 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) 234118 G16 234118 G17 234118 G18 234118f 10 For more information www.linear.com/LTC2341-18 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 ADC Timing Characteristics 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 = 666ksps, unless otherwise noted. 32k Point Arbitrary Two-Tone FFT fSMPL = 666kHz, IN+ = –7dBFS 2kHz 32k Point FFT fSMPL = 666kHz, SNR, SINAD vs VREFBUF, Sine, IN– = –7dBFS 3.3kHz 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 = 112dB –40 –40 SNR = 89.3dB 98 SNR = 95.2dB THD = –113dB –60 –60 SINAD = 89.2dB SNR SFDR = 113dB 96 –80 –80 SINAD –100 –100 94 –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) SNR, SINAD (dBFS) –140 –140 92 –160 –160 –180 –180 90 0 111 222 333 0 111 222 333 2.5 3 3.5 4 4.5 5 FREQUENCY (kHz) FREQUENCY (kHz) REFBUF VOLTAGE (V) 234118 G10 234118 G11 234118 G12
THD, Harmonics vs VREFBUF, SNR, SINAD THD, Harmonics fIN = 2kHz vs Input Frequency vs Input Frequency
–100 106 –60 ±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 –70 –110 THD 98 –80 –115 94 –90 –120 SNR THD 3RD 90 –100 –125 2ND SINAD 2ND SNR, SINAD (dBFS) 86 –110 THD, HARMONICS (dBFS) –130 THD, HARMONICS (dBFS) –135 82 –120 3RD –140 78 –130 2.5 3 3.5 4 4.5 5 100 1k 10k 100k 1M 100 1k 10k 100k 1M REFBUF VOLTAGE (V) FREQUENCY (Hz) FREQUENCY (Hz) 234118 G13 234418 G14 234118 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 THD 95.6 100 SNR 3RD –130 95.4 90 CMRR (dB) SINAD SNR, SINAD (dBFS) 2ND 80 THD, HARMONICS (dBFS) –140 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) 234118 G16 234118 G17 234118 G18 234118f 10 For more information www.linear.com/LTC2341-18 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 ADC Timing Characteristics 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