Datasheet LTC2484 (Analog Devices) - 3

LTC2484
e lecTrical characTerisTics (2x speeD) 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) 0.1 ≤ VREF ≤ VCC, –FS ≤ VIN ≤ +FS (Note 5) l 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 mV Offset Error Drift 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC 100 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+ = 0.75VREF, IN– = 0.25VREF l 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 Output Noise 5V ≤ VCC ≤ 5.5V, VREF = 5V, GND ≤ IN– = IN+ ≤ VCC (Note 13) 0.84 µVRMS
c onverTer 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
Input Common Mode Rejection DC 2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Note 5) l 140 dB Input Common Mode Rejection 2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Note 5) l 140 dB 50Hz ±2% Input Common Mode Rejection 2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Note 5) l 140 dB 60Hz ±2% Input Normal Mode Rejection 2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Notes 5, 7) l 110 120 dB 50Hz ±2% Input Normal Mode Rejection 2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Notes 5, 8) l 110 120 dB 60Hz ±2% Input Normal Mode Rejection 2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Notes 5, 9) l 87 dB 50Hz/60Hz ±2% Reference Common Mode 2.5V ≤ VREF ≤ VCC, GND ≤ IN– = IN+ ≤ VCC (Note 5) l 120 140 dB Rejection DC Power Supply Rejection DC VREF = 2.5V, IN– = IN+ = GND 120 dB Power Supply Rejection, 50Hz ±2% VREF = 2.5V, IN– = IN+ = GND (Note 7) 120 dB Power Supply Rejection, 60Hz ±2% VREF = 2.5V, IN– = IN+ = GND (Note 8) 120 dB
a nalog inpuT anD reFerence The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IN+ Absolute/Common Mode IN+ Voltage GND – 0.3V VCC + 0.3V V IN– Absolute/Common Mode IN– Voltage GND – 0.3V VCC + 0.3V V FS Full-Scale of the Differential Input (IN+ – IN–) l 0.5VREF V LSB Least Significant Bit of the Output Code l FS/224 VIN Input Differential Voltage Range (IN+ – IN–) l –FS +FS V VREF Reference Voltage Range l 0.1 VCC V 2484ff For more information www.linear.com/LTC2484 3 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 Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Test Circuits Timing Diagrams Applications Information Package Description Revision History Typical Application Related Parts