Datasheet LTC2489 (Analog Devices) - 7

LTC2489
Typical perForMance characTerisTics On-Chip Oscillator Frequency On-Chip Oscillator Frequency Offset Error vs VREF vs Temperature vs VCC
0.3 310 310 VCC = 5V VREF = 2.5V REF– = GND VIN = 0V ) 0.2 VIN = 0V 308 V 308 IN(CM) = GND REF VIN(CM) = GND fO = GND TA = 25°C TA = 25°C 0.1 fO = GND 306 306 0 304 304 –0.1 FREQUENCY (kHz) V FREQUENCY (kHz) CC = 4.1V VREF = 2.5V OFFSET ERROR (ppm OF V 302 –0.2 VIN = 0V 302 VIN(CM) = GND fO = GND –0.3 300 300 0 1 2 3 4 5 –45 –30 –15 0 15 30 45 60 75 90 2.7 3.0 3.5 4.0 4.5 5.0 5.5 VREF (V) TEMPERATURE (°C) VCC (V) 2489 G10 2489 G11 2489 G12
PSRR vs Frequency at VCC PSRR vs Frequency at VCC PSRR vs Frequency at VCC
0 0 0 VCC = 4.1V DC ±0.7V VCC = 4.1V DC ±1.4V VCC = 4.1V DC ±0.7V V V V –20 REF = 2.5V REF = 2.5V REF = 2.5V IN+ = GND –20 IN+ = GND –20 IN+ = GND IN– = GND IN– = GND IN– = GND –40 fO = GND –40 fO = GND –40 fO = GND TA = 25°C TA = 25°C TA = 25°C –60 –60 –60 –80 –80 –80 REJECTION (dB) REJECTION (dB) REJECTION (dB) –100 –100 –100 –120 –120 –120 –140 –140 –140 1 10 100 1k 10k 100k 1M 0 20 40 60 80 100 120 140 160 180 200 220 30600 30650 30700 30750 30800 FREQUENCY AT VCC (Hz) FREQUENCY AT VCC (Hz) FREQUENCY AT VCC (Hz) 2489 G13 2489 G14 2489 G15
Conversion Current Sleep Mode Current Conversion Current vs Temperature vs Temperature vs Output Data Rate
200 2.0 500 fO = GND fO = GND VREF = VCC 1.8 450 IN+ = GND IN– = GND 180 1.6 400 TA = 25°C VCC = 5V 1.4 350 160 1.2 VCC = 5V 1.0 300 VCC = 2.7V 140 0.8 250 0.6 VCC = 2.7V SUPPLY CURRENT (µA) V 200 CC = 5V CONVERSION CURRENT (µA) 120 SLEEP MODE CURRENT (µA) 0.4 0.2 150 VCC = 3V 100 0 100 –45 –30 –15 0 15 30 45 60 75 90 –45 –30 –15 0 15 30 45 60 75 90 0 10 20 30 TEMPERATURE (°C) TEMPERATURE (°C) OUTPUT DATA RATE (READINGS/SEC) 2489 G16 2489 G17 2489 G18 2489fb For more information www.linear.com/LTC2489 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Converter Characteristics Analog Input and Reference I2C Inputs and Digital Outputs Power Requirements Digital Inputs and Digital Outputs I2C Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Applications Information Package Description Revision History Typical Application Related Parts