Datasheet LTC2492 (Analog Devices) - 8

LTC2492
Typical perFormance characTerisTics On-Chip Oscillator Frequency On-Chip Oscillator Frequency vs Temperature vs VCC PSRR vs Frequency at VCC
310 310 0 VREF = 2.5V VCC = 4.1V DC VIN = 0V V –20 REF = 2.5V VIN(CM) = GND IN+ = GND 308 308 fO = GND IN– = GND TA = 25°C –40 fO = GND TA = 25°C 306 306 –60 –80 304 304 REJECTION (dB) FREQUENCY (kHz) V FREQUENCY (kHz) CC = 4.1V –100 V 302 REF = 2.5V VIN = 0V 302 –120 VIN(CM) = GND fO = GND 300 300 –140 –45 –30 –15 0 15 30 45 60 75 90 2.5 3.0 3.5 4.0 4.5 5.0 5.5 1 10 100 1k 10k 100k 1M TEMPERATURE (°C) VCC (V) FREQUENCY AT VCC (Hz) 2492 G19 2492 G20 2492 G21
Conversion Current PSRR vs Frequency at VCC PSRR vs Frequency at VCC vs Temperature
0 0 200 VCC = 4.1V DC ±1.4V VCC = 4.1V DC ±0.7V fO = GND VREF = 2.5V VREF = 2.5V CS = GND –20 IN+ = GND –20 IN+ = GND 180 SCK = NC IN– = GND IN– = GND µA) SDO = NC –40 fO = GND –40 fO = GND SDI = GND VCC = 5V TA = 25°C TA = 25°C 160 –60 –60 –80 V –80 CC = 2.7V 140 REJECTION (dB) REJECTION (dB) –100 –100 CONVERSION CURRENT ( 120 –120 –120 –140 –140 100 0 20 40 60 80 100 120 140 160 180 200 220 30600 30650 30700 30750 30800 –45 –30 –15 0 15 30 45 60 75 90 FREQUENCY AT VCC (Hz) FREQUENCY AT VCC (Hz) TEMPERATURE (°C) 2492 G22 2492 G23 2492 G24
Sleep Mode Current Conversion Current Integral Nonlinearity (2x Speed vs Temperature vs Output Data Rate Mode; VCC = 5V, VREF = 5V)
2.0 500 3 fO = GND VREF = VCC VCC = 5V 1.8 CS = VCC 450 IN+ = GND VREF = 5V SCK = NC IN– = GND 2 V 1.6 IN(CM) = 2.5V SDO = NC SCK = NC f 400 O = GND 1.4 SDI = GND SDO = NC ) SDI = GND 1 350 REF 1.2 VCC = 5V CS GND 25°C, 90°C 1.0 300 fO = EXT OSC 0 TA = 25°C 0.8 250 0.6 INL (ppm OF V –1 VCC = 2.7V SUPPLY CURRENT (µA) V 200 CC = 5V SLEEP MODE CURRENT (µA) –45°C 0.4 –2 0.2 150 VCC = 3V 0 100 –3 –45 –30 –15 0 15 30 45 60 75 90 0 10 20 30 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5 TEMPERATURE (°C) OUTPUT DATA RATE (READINGS/SEC) INPUT VOLTAGE (V) 2492 G25 2492 G26 2492 G27 2492fe 8 For more information www.linear.com/LTC2492 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics (Normal Speed) Pin Configuration Electrical Characteristics (2x Speed) Converter Characteristics Analog Input and Reference Digital Inputs and Digital Outputs Power Requirements Digital Inputs and Digital Outputs Typical Performance Characteristics Pin Functions Functional Block Diagram Test Circuits Timing Diagrams Applications Information Package Description Revision History Typical Application Related Parts