Datasheet LTC2358-18 (Analog Devices) - 10
| Hersteller | Analog Devices |
| Beschreibung | Buffered Octal, 18-Bit, 200ksps/Ch Differential ±10.24V ADC with 30VP-P Common Mode Range |
| Seiten / Seite | 38 / 10 — TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VCC = +15V, VEE = –15V, … |
| Dateiformat / Größe | PDF / 2.3 Mb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VCC = +15V, VEE = –15V, VDD = 5V,
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LTC2358-18
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VCC = +15V, VEE = –15V, VDD = 5V, OVDD = 2.5V, Internal Reference and Buffer (VREFBUF = 4.096V), fSMPL = 200ksps, unless otherwise noted. 32k Point Arbitrary Two-Tone FFT 32k Point FFT fSMPL = 200kHz, 32k Point FFT fSMPL = 200kHz, f f SMPL = 200kHz, IN+ = –7dBFS 2kHz IN = 2kHz fIN = 2kHz Sine, IN– = –7dBFS 3.1kHz Sine
0 0 0 ±10.24V RANGE ±10.24V RANGE ±10.24V RANGE –20 TRUE BIPOLAR DRIVE (IN– = 0V) –20 FULLY DIFFERENTIAL DRIVE (IN– = –IN+) –20 ARBITRARY DRIVE SNR = 96.3dB –40 SNR = 96.4dB –40 SFDR = 119dB –40 THD = –110dB THD = –114dB SNR = 96.4dB SINAD = 96.2dB –60 SINAD = 96.3dB –60 –60 SFDR = 113dB SFDR = 118dB –80 –80 –80 –100 –100 –100 6.2kHz –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) –140 –140 –140 –160 –160 –160 –180 –180 –180 0 20 40 60 80 100 0 20 40 60 80 100 0 20 40 60 80 100 FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) 235818 G10 235818 G11 235818 G12
32k Point FFT fSMPL = 200kHz, SNR, SINAD vs VREFBUF, THD, Harmonics vs VREFBUF, fIN = 2kHz fIN = 2kHz fIN = 2kHz
0 100 –100 ±5.12V RANGE ±2.5 • VREFBUF RANGE ±2.5 • VREFBUF RANGE –20 TRUE BIPOLAR DRIVE (IN– = 0V) TRUE BIPOLAR DRIVE (IN– = 0V) TRUE BIPOLAR DRIVE (IN– = 0V) SNR = 92.8dB –105 –40 98 THD = –112dB SNR SINAD = 92.7dB –60 –110 THD SFDR = 117dB 96 –80 SINAD –115 –100 2ND 94 –120 AMPLITUDE (dBFS) SNR, SINAD (dBFS) –120 –140 THD, HARMONICS (dBFS) 92 3RD –125 –160 –180 90 –130 0 20 40 60 80 100 2.5 3 3.5 4 4.5 5 2.5 3 3.5 4 4.5 5 FREQUENCY (kHz) REFBUF VOLTAGE (V) REFBUF VOLTAGE (V) 235818 G13 235818 G14 235818 G15
SNR, SINAD THD, Harmonics vs Input vs Input Frequency THD vs Input Frequency Common Mode, fIN = 2kHz
100 –60 0 ±10.24V RANGE ±10.24V RANGE 2V 95 TRUE BIPOLAR DRIVE (IN– = 0V) –20 P–P FULLY DIFFERENTIAL DRIVE –70 90 SNR –40 –80 85 –60 SINAD –90 1kΩ –11V ≤ VCM ≤ 11V 80 10kΩ SOURCE –80 SOURCE –100 75 –100 THD (dBFS) SNR, SINAD (dBFS) THD THD 70 –110 THD, HARMONICS (dBFS) –120 50Ω SOURCE 65 ±10.24V RANGE –120 –140 TRUE BIPOLAR DRIVE (IN– = 0V) 3RD 2ND 60 –130 –160 10 100 1k 10k 100k 10 100 1k 10k 100k –15 –10 –5 0 5 10 15 FREQUENCY (Hz) FREQUENCY (Hz) INPUT COMMON MODE (V) 235818 G16 235818 G17 235818 G18 235818f 10 For more information www.linear.com/LTC2358-18 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, VCC = +15V, VEE = –15V, VDD = 5V, OVDD = 2.5V, Internal Reference and Buffer (VREFBUF = 4.096V), fSMPL = 200ksps, unless otherwise noted. 32k Point Arbitrary Two-Tone FFT 32k Point FFT fSMPL = 200kHz, 32k Point FFT fSMPL = 200kHz, f f SMPL = 200kHz, IN+ = –7dBFS 2kHz IN = 2kHz fIN = 2kHz Sine, IN– = –7dBFS 3.1kHz Sine
0 0 0 ±10.24V RANGE ±10.24V RANGE ±10.24V RANGE –20 TRUE BIPOLAR DRIVE (IN– = 0V) –20 FULLY DIFFERENTIAL DRIVE (IN– = –IN+) –20 ARBITRARY DRIVE SNR = 96.3dB –40 SNR = 96.4dB –40 SFDR = 119dB –40 THD = –110dB THD = –114dB SNR = 96.4dB SINAD = 96.2dB –60 SINAD = 96.3dB –60 –60 SFDR = 113dB SFDR = 118dB –80 –80 –80 –100 –100 –100 6.2kHz –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) –120 AMPLITUDE (dBFS) –140 –140 –140 –160 –160 –160 –180 –180 –180 0 20 40 60 80 100 0 20 40 60 80 100 0 20 40 60 80 100 FREQUENCY (kHz) FREQUENCY (kHz) FREQUENCY (kHz) 235818 G10 235818 G11 235818 G12
32k Point FFT fSMPL = 200kHz, SNR, SINAD vs VREFBUF, THD, Harmonics vs VREFBUF, fIN = 2kHz fIN = 2kHz fIN = 2kHz
0 100 –100 ±5.12V RANGE ±2.5 • VREFBUF RANGE ±2.5 • VREFBUF RANGE –20 TRUE BIPOLAR DRIVE (IN– = 0V) TRUE BIPOLAR DRIVE (IN– = 0V) TRUE BIPOLAR DRIVE (IN– = 0V) SNR = 92.8dB –105 –40 98 THD = –112dB SNR SINAD = 92.7dB –60 –110 THD SFDR = 117dB 96 –80 SINAD –115 –100 2ND 94 –120 AMPLITUDE (dBFS) SNR, SINAD (dBFS) –120 –140 THD, HARMONICS (dBFS) 92 3RD –125 –160 –180 90 –130 0 20 40 60 80 100 2.5 3 3.5 4 4.5 5 2.5 3 3.5 4 4.5 5 FREQUENCY (kHz) REFBUF VOLTAGE (V) REFBUF VOLTAGE (V) 235818 G13 235818 G14 235818 G15
SNR, SINAD THD, Harmonics vs Input vs Input Frequency THD vs Input Frequency Common Mode, fIN = 2kHz
100 –60 0 ±10.24V RANGE ±10.24V RANGE 2V 95 TRUE BIPOLAR DRIVE (IN– = 0V) –20 P–P FULLY DIFFERENTIAL DRIVE –70 90 SNR –40 –80 85 –60 SINAD –90 1kΩ –11V ≤ VCM ≤ 11V 80 10kΩ SOURCE –80 SOURCE –100 75 –100 THD (dBFS) SNR, SINAD (dBFS) THD THD 70 –110 THD, HARMONICS (dBFS) –120 50Ω SOURCE 65 ±10.24V RANGE –120 –140 TRUE BIPOLAR DRIVE (IN– = 0V) 3RD 2ND 60 –130 –160 10 100 1k 10k 100k 10 100 1k 10k 100k –15 –10 –5 0 5 10 15 FREQUENCY (Hz) FREQUENCY (Hz) INPUT COMMON MODE (V) 235818 G16 235818 G17 235818 G18 235818f 10 For more information www.linear.com/LTC2358-18 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