Datasheet LTC2487 (Analog Devices) - 8

LTC2487
TYPICAL PERFORMANCE CHARACTERISTICS On-Chip Oscillator Frequency On-Chip Oscillator Frequency vs Temperature vs VCC PSRR vs Frequency at VCC
310 310 0 VCC = 4.1V DC ±0.7V V –20 REF = 2.5V 308 IN+ = GND 308 IN– = GND –40 fO = GND TA = 25°C 306 306 –60 304 –80 304 FREQUENCY (kHz) REJECTION (dB) V FREQUENCY (kHz) CC = 4.1V VREF = 2.5V –100 V V 302 REF = 2.5V IN = 0V VIN = 0V 302 VIN(CM) = GND V –120 IN(CM) = GND fO = GND fO = GND TA = 25°C 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) 2487 G19 2487 G20 2487 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 V V –20 REF = 2.5V REF = 2.5V IN+ = GND –20 IN+ = GND IN– = GND IN– = GND 180 –40 fO = GND –40 fO = GND VCC = 5V TA = 25°C TA = 25°C –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) 2487 G22 2487 G23 2487 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 1.8 450 IN+ = GND VREF = 5V IN– = GND 2 1.6 VIN(CM) = 2.5V 400 fO = EXT OSC fO = GND 1.4 TA = 25°C 1 1.2 350 VCC = 5V 25°C, 85°C 1.0 300 0 0.8 INL (µV) 250 0.6 –1 VCC = 2.7V V SUPPLY CURRENT (µA) CC = 5V 200 SLEEP MODE CURRENT (µA) 0.4 –45°C –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) 2487 G25 2487 G26 2487 G27 2487fg 8 For more information www.linear.com/LTC2487 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics (Normal Speed) Electrical Characteristics (2x Speed) Converter Characteristics Analog Input and Reference I2C Inputs and Digital Outputs Power Requirements Digital Inputs and Digital Outputs I2C Timing Characteristics Typical Performance Characteristics Functional Block Diagram Applications Information Package Description Revision History Typical Application Related Parts