Datasheet LTC2481 (Analog Devices) - 8

LTC2481
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 308 V 308 IN(CM) = GND IN+ = GND IN– = GND –40 TA = 25°C 306 306 –60 304 304 –80 FREQUENCY (kHz) FREQUENCY (kHz) REJECTION (dB) VCC = 4.1V –100 302 VREF = 2.5V 302 VIN = 0V –120 VIN(CM) = 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) 2481 G21 2481 G22 2481 G23
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 V V –20 REF = 2.5V REF = 2.5V IN+ = GND –20 IN+ = GND IN– = GND IN– = GND 180 –40 TA = 25°C –40 TA = 25°C VCC = 5V –60 –60 160 –80 –80 VCC = 2.7V 140 REJECTION (dB) REJECTION (dB) –100 –100 CONVERSION CURRENT (µA) 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) 2481 G24 2481 G25 2481 G26
Sleep Mode Current Conversion Current vs Temperature vs Output Data Rate
2.0 500 V 1.8 REF = VCC 450 IN+ = GND 1.6 IN– = GND 400 CA0/f0 = EXT OSC 1.4 TA = 25°C 1.2 V 350 CC = 5V 1.0 300 0.8 Y CURRENT (µA) 250 0.6 VCC = 2.7V SUPPL V 200 CC = 5V SLEEP MODE CURRENT (µA) 0.4 0.2 150 VCC = 3V 0 100 –45 –30 –15 0 15 30 45 60 75 90 0 10 20 30 TEMPERATURE (°C) OUTPUT DATA RATE (READINGS/SEC) 2481 G27 2481 G28 2481fd 8 For more information www.linear.com/LTC2481 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics (Normal Speed) Electrical Characteristics (2x Speed) Converter Characteristics Analog Input and Reference I2C Digital Inputs and Digital Outputs Power Requirements Timing Characteristics I2C Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Applications Information Package Description Revision History Typical Application