Datasheet LTC2321-14 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | Dual, 14-Bit + Sign, 2Msps Differential Input ADC with Wide Input Common Mode Range |
| Pages / Page | 28 / 7 — Typical perForMance characTerisTics. TA = 25°C, VDD = 5V, OVDD = 2.5V, … |
| File Format / Size | PDF / 2.6 Mb |
| Document Language | English |
Typical perForMance characTerisTics. TA = 25°C, VDD = 5V, OVDD = 2.5V, REFOUT1,2 =
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LTC2321-14
Typical perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFOUT1,2 = 4.096V, fSMPL = 2Msps, unless otherwise noted. (Note 16) Output Match with Simultaneous Crosstalk vs Input Frequency CMRR vs Input Frequency Input Steps at CH1 and CH2
–130 –89 20000 –92 15000 –132 –95 10000 CMRR (dB) –98 5000 CROSSTALK (dBc) –134 OUTPUT CODE (CH1, CH2) –101 0 –136 –104 –5000 0 0.2 0.4 0.6 0.8 1.0 0 0.5 1.0 0 100 200 300 400 500 FREQUENCY (MHz) FREQUENCY (MHz) TIME (ns) 232114 G10 232114 G11 232114 G12
Offset Error vs Temperature Gain Error vs Temperature REFOUT1,2 Output vs Temperature
0.6 0.5 200 0.4 0.4 100 CH2 0.3 0.2 0 0.2 0.1 4.096V –100 LSB 0 0 CH1 –0.1 –200 –0.2 –0.2 2.048V –300 GAIN ERROR (14-BIT LSB) –0.3 –0.4 –400 –0.4 REFOUT (ppm, NORMALIZED TO 20°C) –0.6 –0.5 –500 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 –50 0 50 100 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 232114 G13 232114 G14 232114 G15
Reference Current vs Temperature, Supply Current OVDD Current vs SCK Frequency, VREF = 4.096V vs Sample Frequency CLOAD = 10pF
0.350 12.0 8 11.5 11.0 6 0.345 10.5 10.0 4 9.5 CURRENT (mA) 0.340 DD SUPPLY CURRENT (mA) OV REFERENCE CURRENT (mA) 9.0 2 8.5 0.335 8.0 0 –40 –20 0 20 40 60 80 100 120 0 0.5 1.0 1.5 2.0 0 10 20 30 40 50 60 70 80 90 100 110 TEMPERATURE (°C) SAMPLE RATE (Msps) SCK FREQUENCY (MHz) 232114 G16 232114 G17 232114 G18 232114fc For more information www.linear.com/LTC2321-14 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Digital Inputs And Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Typical Application Package Description Revision History Related Parts
Typical perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFOUT1,2 = 4.096V, fSMPL = 2Msps, unless otherwise noted. (Note 16) Output Match with Simultaneous Crosstalk vs Input Frequency CMRR vs Input Frequency Input Steps at CH1 and CH2
–130 –89 20000 –92 15000 –132 –95 10000 CMRR (dB) –98 5000 CROSSTALK (dBc) –134 OUTPUT CODE (CH1, CH2) –101 0 –136 –104 –5000 0 0.2 0.4 0.6 0.8 1.0 0 0.5 1.0 0 100 200 300 400 500 FREQUENCY (MHz) FREQUENCY (MHz) TIME (ns) 232114 G10 232114 G11 232114 G12
Offset Error vs Temperature Gain Error vs Temperature REFOUT1,2 Output vs Temperature
0.6 0.5 200 0.4 0.4 100 CH2 0.3 0.2 0 0.2 0.1 4.096V –100 LSB 0 0 CH1 –0.1 –200 –0.2 –0.2 2.048V –300 GAIN ERROR (14-BIT LSB) –0.3 –0.4 –400 –0.4 REFOUT (ppm, NORMALIZED TO 20°C) –0.6 –0.5 –500 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 –50 0 50 100 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 232114 G13 232114 G14 232114 G15
Reference Current vs Temperature, Supply Current OVDD Current vs SCK Frequency, VREF = 4.096V vs Sample Frequency CLOAD = 10pF
0.350 12.0 8 11.5 11.0 6 0.345 10.5 10.0 4 9.5 CURRENT (mA) 0.340 DD SUPPLY CURRENT (mA) OV REFERENCE CURRENT (mA) 9.0 2 8.5 0.335 8.0 0 –40 –20 0 20 40 60 80 100 120 0 0.5 1.0 1.5 2.0 0 10 20 30 40 50 60 70 80 90 100 110 TEMPERATURE (°C) SAMPLE RATE (Msps) SCK FREQUENCY (MHz) 232114 G16 232114 G17 232114 G18 232114fc For more information www.linear.com/LTC2321-14 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Digital Inputs And Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Typical Application Package Description Revision History Related Parts
