Datasheet LTC2492 (Analog Devices) - 2

LTC2492
absoluTe maximum raTings pin conFiguraTion (Notes 1, 2)
Supply Voltage (VCC) ...–0.3V to 6V fO 1 14 REF– Analog Input Voltage SDI 2 13 REF+ (CH0 to CH3, COM) .. –0.3V to (VCC + 0.3V) SCK 3 12 VCC REF+, REF– .. –0.3V to (V CS 4 15 11 CH3 CC + 0.3V) Digital Input Voltage... –0.3V to (V SDO 5 10 CH2 CC + 0.3V) GND 6 9 CH1 Digital Output Voltage .. –0.3V to (VCC + 0.3V) COM 7 8 CH0 Operating Temperature Range LTC2492C .. 0°C to 70°C DE PACKAGE 14-LEAD (4mm × 3mm) PLASTIC DFN LTC2492I ...–40°C to 85°C TJMAX = 125°C, θJA = 37°C/W Storage Temperature Range ..–65°C to 150°C EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB
orDer inFormaTion LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2492CDE#PBF LTC2492CDE#TRPBF 2492 14-Lead (4mm × 3mm) Plastic DFN 0°C to 70°C LTC2492IDE#PBF LTC2492IDE#TRPBF 2492 14-Lead (4mm × 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. Consult LTC Marketing for information on non-standard lead based finish parts. 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) 0.1V ≤ VREF ≤ VCC, –FS ≤ VIN ≤ +FS (Note 5) 24 Bits Integral Nonlinearity 5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V (Note 6) l 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 14) l 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 l 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+ = 0.25VREF, IN– = 0.75VREF l 25 ppm of VREF Negative Full-Scale Error Drift 2.5V ≤ VREF ≤ VCC, IN+ = 0.25VREF, IN– = 0.75VREF 0.1 ppm of VREF/°C Total Unadjusted Error 5V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V 15 ppm of VREF 5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V 15 ppm of VREF 2.7V ≤ VCC ≤ 5.5V, VREF = 2.5V, VIN(CM) = 1.25V 15 ppm of VREF Output Noise 5.5V < VCC < 2.7V, 2.5V ≤ VREF ≤ VCC, 0.6 µVRMS GND ≤ IN+ = IN– ≤ VCC (Note 13) Internal PTAT Signal TA = 27°C (Note 14) 27.8 28.0 28.2 mV Internal PTAT Temperature Coefficient 93.5 µV/°C 2492fe 2 For more information www.linear.com/LTC2492 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics (Normal Speed) Pin Configuration Electrical Characteristics (2x Speed) Converter Characteristics Analog Input and Reference Digital Inputs and Digital Outputs Power Requirements Digital Inputs and Digital Outputs Typical Performance Characteristics Pin Functions Functional Block Diagram Test Circuits Timing Diagrams Applications Information Package Description Revision History Typical Application Related Parts