Datasheet LTC2495 (Analog Devices) - 8

LTC2495
typical perForMance characteristics On-Chip Oscillator Frequency Offset Error vs VCC Offset Error vs VREF vs Temperature
0.3 0.3 310 REF+ = 2.5V VCC = 5V REF– = GND REF– = GND ) 0.2 VIN = 0V ) 0.2 VIN = 0V 308 REF VIN(CM) = GND REF VIN(CM) = GND T T 0.1 A = 25°C A = 25°C f 0.1 O = GND fO = GND 306 0 0 304 –0.1 –0.1 FREQUENCY (kHz) VCC = 4.1V V OFFSET ERROR (ppm of V OFFSET ERROR (ppm of V 302 REF = 2.5V –0.2 –0.2 VIN = 0V VIN(CM) = GND fO = GND –0.3 –0.3 300 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 0 1 2 3 4 5 –45 –30 –15 0 15 30 45 60 75 90 V VREF (V) TEMPERATURE (°C) CC (V) 2495 G17 2495 G18 2495 G19
On-Chip Oscillator Frequency vs VCC PSRR vs Frequency at VCC PSRR vs Frequency at VCC
310 0 0 VCC = 4.1V DC VCC = 4.1V DC ±1.4V V V –20 REF = 2.5V REF = 2.5V IN+ = GND –20 IN+ = GND 308 IN– = GND IN– = GND –40 fO = GND –40 fO = GND TA = 25°C TA = 25°C 306 –60 –60 –80 –80 304 FREQUENCY (kHz) REJECTION (dB) REJECTION (dB) VREF = 2.5V –100 –100 VIN = 0V 302 VIN(CM) = GND f –120 –120 O = GND TA = 25°C 300 –140 –140 2.5 3.0 3.5 4.0 4.5 5.0 5.5 1 10 100 1k 10k 100k 1M 0 20 40 60 80 100 120 140 160 180 200 220 VCC (V) FREQUENCY AT VCC (Hz) FREQUENCY AT VCC (Hz) 2495 G20 2495 G21 2495 G22
Conversion Current PSRR vs Frequency at VCC vs Temperature
0 200 VCC = 4.1V DC ±0.7V fO = GND V –20 REF = 2.5V IN+ = GND IN– = GND 180 –40 fO = GND VCC = 5V TA = 25°C –60 160 –80 VCC = 2.7V 140 REJECTION (dB) –100 CONVERSION CURRENT (µA) 120 –120 –140 100 30600 30650 30700 30750 30800 –45 –30 –15 0 15 30 45 60 75 90 FREQUENCY AT VCC (Hz) TEMPERATURE (°C) 2495 G23 2495 G24 2495fe 8 For more information www.linear.com/LTC2495 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration order information 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 Pin Functions Functional Block Diagram Applications Information Package Description Revision History Related Parts