Datasheet LTC2485 (Analog Devices) - 2

LTC2485
absoluTe MaxiMuM raTings pin conFiguraTion (Notes 1, 2)
Supply Voltage (V TOP VIEW CC) to GND .. – 0.3V to 6V Analog Input Voltage to GND ... –0.3V to (VCC + 0.3V) REF+ 1 10 CA0/f0 Reference Input Voltage to GND .. –0.3V to (VCC + 0.3V) VCC 2 9 CA1 Digital Input Voltage to GND ... –0.3V to (V REF– 3 11 8 GND CC + 0.3V) Digital Output Voltage to GND .. –0.3V to (V IN+ 4 7 SDA CC + 0.3V) IN– 5 6 SCL Operating Temperature Range LTC2485C .. 0°C to 70°C DD PACKAGE 10-LEAD (3mm × 3mm) PLASTIC DFN LTC2485I ...–40°C to 85°C TJMAX = 125°C, θJA = 43°C/W Storage Temperature Range .. –65°C to 125°C EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2485CDD#PBF LTC2485CDD#TRPBF LBST 10-Lead (3mm × 3mm) Plastic DFN 0°C to 70°C LTC2485IDD#PBF LTC2485IDD#TRPBF LBST 10-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
e lecTrical characTerisTics (norMal speeD) The
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denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Notes 3, 4) PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) 0.1 ≤ VREF ≤ VCC, –FS ≤ VIN ≤ +FS (Note 5) ● 24 Bits Integral Nonlinearity 5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V (Note 6) ● 2 10 ppm of VREF 2.7V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V (Note 6) 1 ppm of VREF Offset Error 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC (Note 13) ● 0.5 2.5 µV Offset Error Drift 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC 10 nV/°C Positive Full-Scale Error 2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF ● 25 ppm of VREF Positive Full-Scale Error Drift 2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VREF 0.1 ppm of VREF/°C Negative Full-Scale Error 2.5V ≤ VREF ≤ VCC, IN– = 0.75VREF, IN+ = 0.25VREF ● 25 ppm of VREF Negative Full-Scale Error Drift 2.5V ≤ VREF ≤ VCC, IN– = 0.75VREF, IN+ = 0.25VREF 0.1 ppm of VREF/°C Total Unadjusted Error 5V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V (Note 6) 15 ppm of VREF 5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V (Note 6) 15 ppm of VREF 2.7V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V (Note 6) 15 ppm of VREF Output Noise 5V ≤ VCC ≤ 5.5V, VREF = 5V, GND ≤ IN– = IN+ ≤ VCC (Note 12) 0.6 µVRMS Internal PTAT Signal TA = 27°C 390 450 mV 2485fd 2 For more information www.linear.com/LTC2485 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 Related Parts