Datasheet LTC2389-16 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | 16-Bit, 2.5Msps SAR ADC with Pin-Configurable Analog Input Range and 96dB SNR |
| Pages / Page | 40 / 9 — t ypical perFormance characteristics TA = 25°C, VDD = 5V, OVDD = 2.5V, … |
| File Format / Size | PDF / 1.1 Mb |
| Document Language | English |
t ypical perFormance characteristics TA = 25°C, VDD = 5V, OVDD = 2.5V, VREF = 4.096V
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LTC2389-16
t ypical perFormance characteristics TA = 25°C, VDD = 5V, OVDD = 2.5V, VREF = 4.096V External Reference, Pseudo-Differential Unipolar Range (PD/FD = OVDD, OB/2C = OVDD), fSMPL = 2.5Msps, unless otherwise noted. Differential Nonlinearity Integral Nonlinearity vs Output Code vs Output Code DC Histogram (Near Zero-Scale)
1.0 0.5 240000 INTERNAL REF INTERNAL REF 0.8 EXTERNAL REF 0.4 EXTERNAL REF 0.6 200000 0.3 0.4 0.2 160000 0.2 0.1 0 0 120000 –0.2 –0.1 COUNTS INL ERROR (LSB) –0.4 DNL ERROR (LSB) 80000 –0.2 –0.6 –0.3 40000 –0.8 –0.4 –1.0 –0.5 0 0 16384 32768 49152 65536 0 16384 32768 49152 65536 2 3 4 5 6 OUTPUT CODE OUTPUT CODE CODE 238916 G19 238916 G20 238916 G21
32k Point FFT fSMPL = 2.5Msps, DC Histogram (Near Full-Scale) fIN = 2kHz SNR, SINAD vs Input Frequency
240000 0 96 SNR = 93.2dB –20 THD = –112dB 94 200000 SINAD = 93.2dB –40 SFDR = 113dB 92 SNR 160000 –60 90 –80 120000 88 SINAD –100 COUNTS 86 80000 AMPLITUDE (dBFS) –120 SNR, SINAD (dB) –140 84 40000 –160 82 0 –180 80 65530 65531 65532 65533 65534 0 250 500 750 1000 1250 0 12.5 25 37.5 50 62.5 75 87.5 100 CODE FREQUENCY (kHz) FREQUENCY (kHz) 238916 G22 238916 G23 238916 G24
SNR, SINAD vs Input Level, SNR, SINAD vs Temperature, THD, Harmonics vs Input Frequency fIN = 2kHz fIN = 2kHz
–75 94.0 95 –80 SNR –85 94 93.5 SNR –90 –95 THD 93 SINAD –100 3RD 2ND 93.0 SINAD –105 92 –110 SNR, SINAD (dB) SNR, SINAD (dB) THD, HARMONICS (dB) –115 92.5 91 –120 –125 –130 92.0 90 0 12.5 25 37.5 50 62.5 75 87.5 100 –40 –30 –20 –10 0 –55 –35 –15 5 25 45 65 85 105 125 FREQUENCY (kHz) INPUT LEVEL (dB) TEMPERATURE (°C) 238916 G25 238916 G26 238916 G27 238916f 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Analog Input Converter Characteristics Dynamic Accuracy Reference Characteristics Digital Inputs And Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagrams Applications Information Package Description Related Parts Typical Application
t ypical perFormance characteristics TA = 25°C, VDD = 5V, OVDD = 2.5V, VREF = 4.096V External Reference, Pseudo-Differential Unipolar Range (PD/FD = OVDD, OB/2C = OVDD), fSMPL = 2.5Msps, unless otherwise noted. Differential Nonlinearity Integral Nonlinearity vs Output Code vs Output Code DC Histogram (Near Zero-Scale)
1.0 0.5 240000 INTERNAL REF INTERNAL REF 0.8 EXTERNAL REF 0.4 EXTERNAL REF 0.6 200000 0.3 0.4 0.2 160000 0.2 0.1 0 0 120000 –0.2 –0.1 COUNTS INL ERROR (LSB) –0.4 DNL ERROR (LSB) 80000 –0.2 –0.6 –0.3 40000 –0.8 –0.4 –1.0 –0.5 0 0 16384 32768 49152 65536 0 16384 32768 49152 65536 2 3 4 5 6 OUTPUT CODE OUTPUT CODE CODE 238916 G19 238916 G20 238916 G21
32k Point FFT fSMPL = 2.5Msps, DC Histogram (Near Full-Scale) fIN = 2kHz SNR, SINAD vs Input Frequency
240000 0 96 SNR = 93.2dB –20 THD = –112dB 94 200000 SINAD = 93.2dB –40 SFDR = 113dB 92 SNR 160000 –60 90 –80 120000 88 SINAD –100 COUNTS 86 80000 AMPLITUDE (dBFS) –120 SNR, SINAD (dB) –140 84 40000 –160 82 0 –180 80 65530 65531 65532 65533 65534 0 250 500 750 1000 1250 0 12.5 25 37.5 50 62.5 75 87.5 100 CODE FREQUENCY (kHz) FREQUENCY (kHz) 238916 G22 238916 G23 238916 G24
SNR, SINAD vs Input Level, SNR, SINAD vs Temperature, THD, Harmonics vs Input Frequency fIN = 2kHz fIN = 2kHz
–75 94.0 95 –80 SNR –85 94 93.5 SNR –90 –95 THD 93 SINAD –100 3RD 2ND 93.0 SINAD –105 92 –110 SNR, SINAD (dB) SNR, SINAD (dB) THD, HARMONICS (dB) –115 92.5 91 –120 –125 –130 92.0 90 0 12.5 25 37.5 50 62.5 75 87.5 100 –40 –30 –20 –10 0 –55 –35 –15 5 25 45 65 85 105 125 FREQUENCY (kHz) INPUT LEVEL (dB) TEMPERATURE (°C) 238916 G25 238916 G26 238916 G27 238916f 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Analog Input Converter Characteristics Dynamic Accuracy Reference Characteristics Digital Inputs And Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagrams Applications Information Package Description Related Parts Typical Application
