LTC2483 16-Bit ADC with Easy Drive Input Current Cancellation 2 and I C Interface Fae Tseru Dpircse Tnoi n The LTC 2483 combines a 16-bit plus sign No Latency Easy Drive Technology Enables Rail-to-Rail analog-to-digital converter with patented Easy Drive Inputs with Zero Differential Input Current 2 n technology and I C digital interface. The patented sampling Directly Digitizes High Impedance Sensors with scheme eliminates dynamic input current errors and the Full Accuracy n shortcomings of on-chip buffering through automatic 600nV Noise, Independent of V RMS REF n cancellation of differential input current. This allows large GND to V Input/Reference Common Mode Range CC 2 n external source impedances and input signals, with rail-to- 2-Wire I C Interface n rail input range to be directly digitized while maintaining Simultaneous 50Hz/60Hz Rejection n exceptional DC accuracy. 2ppm (0.25 LSB) INL, No Missing Codes n 1ppm Offset and 15ppm Full-Scale Error The LTC2483 allows a wide common mode input range n No Latency: Digital Filter Settles in a Single Cycle (0V to V ) independent of the reference voltage. The CC n Single Supply 2.7V to 5.5V Operation reference can be as low as 100mV or can be tied directly n Internal Oscillator to V . The noise level is 600nV independent of V . CC RMS REF n Six Addresses Available This allows direct digitization of low level signals with n Available in a Tiny (3mm 3mm) 10-Lead 16-bit accuracy. The LTC2483 includes an on-chip trimmed DFN Package oscillator, eliminating the need for external crystals or oscillators and provides 87dB rejection of 50Hz and 60Hz a acilpp Tsnoi line frequency noise. Absolute accuracy and low drift are n Direct Sensor Digitizer automatically maintained through continuous, transparent, n Weight Scales offset and full-scale calibration. n Direct Temperature Measurement L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No Latency and Easy Drive are trademarks of Linear Technology Corporation. All other n Strain Gauge Transducers trademarks are the property of their respective owners. Patents pending. n Instrumentation n Industrial Process Control n DVMs and Meters T lacipy a acilpp Tnoi + +FS Error vs R at IN and IN SOURCE 80 V = 5V CC V CC V = 5V REF 60 + V = 3.75V IN V = 1.25V IN 1F 40 0.1F F = GND O T = 25C A 20 SCL + 10k I = 0 REF V 2-WIRE C = 1F DIFF CC IN + 2 V IN SDA I C INTERFACE 0 SENSE LTC2483 CA0/F 20 0 6 ADDRESSES V IN CA1 40 GND REF 10k 2483 TA01 0.1F 60 80 1 10 100 1k 10k 100k R () 2483 TA02 SOURCE 2483fc +FS ERROR (ppm)LTC2483 a ulosb T e m mumixa r a Tsgni p ni c no Farugi Tnoi (Notes 1, 2) TOP VIEW Supply Voltage (V ) to GND .......................0.3V to 6V CC Analog Input Voltage to GND ....... 0.3V to (V + 0.3V) + CC REF 1 10 CA0/F 0 Reference Input Voltage to GND .. 0.3V to (V + 0.3V) V 9 CA1 CC 2 CC REF 3 11 GND 8 Digital Input Voltage to GND ....... 0.3V to (V + 0.3V) CC + 4 IN 7 SDA Digital Output Voltage to GND ..... 0.3V to (V + 0.3V) CC IN 5 6 SCL Operating Temperature Range DD PACKAGE LTC2483C ................................................ 0C to 70C 10-LEAD (3mm s 3mm) PLASTIC DFN LTC2483I .............................................40C to 85C T = 125C, = 43C/W JMAX JA EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB Storage Temperature Range .................. 65C to 125C o r D re i n Famro Tnoi LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2483CDD PBF LTC2483CDD TRPBF LBSR 0C to 70C 10-Lead (3mm 3mm) Plastic DFN LTC2483IDD PBF LTC2483IDD TRPBF LBSR 40C to 85C 10-Lead (3mm 3mm) Plastic DFN LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2483CDD LTC2483CDD TR LBSR 10-Lead (3mm 3mm) Plastic DFN 0C to 70C LTC2483IDD LTC2483IDD TR LBSR 10-Lead (3mm 3mm) Plastic DFN 40C to 85C Consult LTC Marketing for parts speciefi d with wider operating temperature ranges. *The temperature grade is identiefi d by a label on the shipping container. For more information on lead free part marking, go to: