Datasheet LTC2325-14 (Analog Devices) - 10

LTC2325-14
Typical perForMance characTerisTics TA = 25°C, VDD = 5V, OVDD = 2.5V, REFOUT1,2,3,4 = 4.096V, fSMPL = 5Msps, unless otherwise noted. Step Response CMRR vs Input Frequency Crosstalk vs Input Frequency (Large Signal Settling)
120 –105 16384 VCM = 4VP-P –107 112 –109 12288 –111 104 –113 8192 ALK (dB) –115 4.096V RANGE CMRR (dB) 96 –117 4096 CROSST –119 OUTPUT CODE (LSB) 88 –121 0 –123 IN+ = 5MHz SQUARE WAVE IN– = 0V 80 –125 –4096 0 500 1000 1500 2000 2500 0 0.5 1 1.5 2 2.5 –20 –10 0 10 20 30 40 50 60 70 80 90 FREQUENCY (kHz) FREQUENCY (MHz) SETTLING TIME (ns) 232514 G10 232514 G11 232514 G12
Step Response External Reference Supply (Fine Settling) Current vs Sample Frequency REF Output vs Temperature
50 700 1.00 4.096V RANGE REFBUFEN = 0V IN+ = 5MHz (EXT REF BUF 600 0.50 SQUARE WAVE OVERDRIVING REF BUF) VDD = 3.3V 25 IN– = 0V 0 500 ALUE (LSB) –0.50 400 0 VREFOUT1,2,3,4 = 4.096V –1.00 300 Y CURRENT (uA) VDD = 5V –1.50 200 TION FROM FINAL V –25 SUPPL –2.00 REF OUTPUT ERROR (mV) VREFOUT1,2,3,4 = 2.048V DEVIA 100 –2.50 –50 0 –3.00 –20 –10 0 10 20 30 40 50 60 70 80 90 0 1 2 3 4 5 –55 –35 –15 5 25 45 65 85 105 125 SETTLING TIME (ns) SAMPLE FREQUENCY (Msps) TEMPERATURE (°C) 232514 G13 232514 G14 232514 G15
Supply Current OVDD Current vs SCK Frequency, Offset Error vs Temperature vs Sample Frequency CLOAD = 10pF
1.0 40 8 32 FULL SCALE SINUSOIDAL INPUT 7 30 35 LVDS 28 OV 0.5 6 DD V 26 DD = 5V CURRENT L 30 5 24 CMOS(2.5V) 0 LSB 4 22 VDD = 3.3V Y CURRENT (mA) 25 CMOS(1.8V) VDS (mA) 3 20 CURRENT CMOS (mA) 18 –0.5 SUPPL DD 2 20 OV 16 1 LOW POWER LVDS 14 –1.0 15 0 12 –55 –35 –15 5 25 45 65 85 105 125 0 1 2 3 4 5 0 22 44 66 88 110 TEMPERATURE (°C) SAMPLE FREQUENCY (Msps) SCK FREQUENCY (MHz) 232514 G16 232514 G17 232514 G18 232514f 10 For more information www.linear.com/LTC2325-14 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics 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 Package Description Typical Application Related Parts