Datasheet LTC2444, LTC2445, LTC2448, LTC2449 (Analog Devices) - 3

LTC2444/LTC2445/ LTC2448/LTC2449
orDer inForMaTion http://www.linear.com/product/LTC2444#orderinfo LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2444CUHF#PBF LTC2444CUHF#TRPBF 2444 38-Lead Plastic QFN 0°C to 70°C LTC2444IUHF#PBF LTC2444IUHF#TRPBF 2444 38-Lead Plastic QFN –40°C to 85°C LTC2445CUHF#PBF LTC2445CUHF#TRPBF 2445 38-Lead Plastic QFN 0°C to 70°C LTC2445IUHF#PBF LTC2445IUHF#TRPBF 2445 38-Lead Plastic QFN –40°C to 85°C LTC2448CUHF#PBF LTC2448CUHF#TRPBF 2448 38-Lead Plastic QFN 0°C to 70°C LTC2448IUHF#PBF LTC2448IUHF#TRPBF 2448 38-Lead Plastic QFN –40°C to 85°C LTC2449CUHF#PBF LTC2449CUHF#TRPBF 2449 38-Lead Plastic QFN 0°C to 70°C LTC2449IUHF#PBF LTC2449IUHF#TRPBF 2449 38-Lead Plastic QFN –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/. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
elecTrical characTerisTics The
l
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, –0.5 • VREF ≤ VIN ≤ 0.5 • VREF, (Note 5) l 24 Bits Integral Nonlinearity VCC = 5V, REF+ = 5V, REF– = GND, VINCM = 2.5V, (Note 6) l 5 15 ppm of VREF REF+ = 2.5V, REF– = GND, VINCM = 1.25V, (Note 6) 3 ppm of VREF Offset Error 2.5V ≤ REF+ ≤ VCC, REF– = GND, l 2.5 5 µV GND ≤ IN+ = IN– ≤ VCC (Note 12) Offset Error Drift 2.5V ≤ REF+ ≤ VCC, REF– = GND, 20 nV/°C GND ≤ IN+ = IN– ≤ VCC Positive Full-Scale Error REF+ = 5V, REF– = GND, IN+ = 3.75V, IN– = 1.25V l 10 50 ppm of VREF REF+ = 2.5V, REF– = GND, IN+ = 1.875V, IN– = 0.625V l 10 50 ppm of VREF Positive Full-Scale Error Drift 2.5V ≤ REF+ ≤ VCC, REF– = GND, 0.2 ppm of VREF/°C IN+ = 0.75 • REF+, IN– = 0.25 • REF+ Negative Full-Scale Error REF+ = 5V, REF– = GND, IN+ = 1.25V, IN– = 3.75V l 10 50 ppm of VREF REF+ = 2.5V, REF– = GND, IN+ = 0.625V, IN– = 1.875V l 10 50 ppm of VREF Negative Full-Scale Error Drift 2.5V ≤ REF+ ≤ VCC, REF– = GND, 0.2 ppm of VREF/°C IN+ = 0.25 • REF+, IN– = 0.75 • REF+ Total Unadjusted Error 5V ≤ VCC ≤ 5.5V, REF+ = 2.5V, REF– = GND, VINCM = 1.25V 15 ppm of VREF 5V ≤ VCC ≤ 5.5V, REF+ = 5V, REF– = GND, VINCM = 2.5V 15 ppm of VREF REF+ = 2.5V, REF– = GND, VINCM = 1.25V, (Note 6) 15 ppm of VREF Input Common Mode Rejection DC 2.5V ≤ REF+ ≤ VCC, REF– = GND, 120 dB GND ≤ IN– = IN+ ≤ VCC 2444589fc For more information www.linear.com/LTC2444 3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Analog Input and Reference Digital Inputs and Digital Outputs Power Requirements Timing Characteristics Pin Functions Functional Block Diagram Test Circuit Applications Information Package Description Revision History Typical Application Related Parts