LTC2483

PRODUCTION

16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation and I2C Interface

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Overview

  • Easy Drive™ Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current
  • Directly Digitizes High Impedance Sensors with Full Accuracy
  • 600nVRMS Noise, Independent of VREF
  • GND to VCC Input/Reference Common Mode Range
  • 2-Wire I2C Interface
  • Simultaneous 50Hz/60Hz Rejection
  • 2ppm (0.25 LSB) INL, No Missing Codes
  • 1ppm Offset and 15ppm Full-Scale Error
  • No Latency: Digital Filter Settles in a Single Cycle
  • Single Supply 2.7V to 5.5V Operation
  • Internal Oscillator
  • Six Addresses Available
  • Available in a Tiny (3mm × 3mm) 10-Lead DFN Package

The LTC2483 combines a 16-bit plus sign No Latency ΔΣ™ analog-to-digital converter with patented Easy Drive technology and I2C digital interface. The patented sampling scheme eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This allows large external source impedances and input signals, with rail-torail input range to be directly digitized while maintaining exceptional DC accuracy.

The LTC2483 allows a wide common mode input range (0V to VCC) independent of the reference voltage. The reference can be as low as 100mV or can be tied directly to VCC. The noise level is 600nVRMS independent of VREF. This allows direct digitization of low level signals with 16‑bit accuracy. The LTC2483 includes an on-chip trimmed oscillator, eliminating the need for external crystals or oscillators and provides 87dB rejection of 50Hz and 60Hz line frequency noise. Absolute accuracy and low drift are automatically maintained through continuous, transparent, offset and full-scale calibration.

Application

  • Direct Sensor Digitizer
  • Weight Scales
  • Direct Temperature Measurement
  • Strain Gauge Transducers
  • Instrumentation
  • Industrial Process Control
  • DVMs and Meters
LTC2483
16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation and I2C Interface
+FS Error vs RSOURCE at IN+ and IN– Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 2

Technical Articles 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Analog to Digital Converters (ADCs) 1
LTC2991
RECOMMENDED FOR NEW DESIGNS Octal I2C Voltage, Current, and Temperature Monitor
Digital Isolators 1
LTM2883
PRODUCTION SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power
Level Translators & Buffers 1
LTC4317
PRODUCTION Dual I2C/SMBus Address Translator
Matched Resistors & Transistors 1
LT5400
RECOMMENDED FOR NEW DESIGNS Quad Matched Resistor Network
Voltage References 1
LT6660
PRODUCTION Tiny Micropower Precision Series References in 2mm × 2mm DFN
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Evaluation Kits

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schematic 1
DC955A

LTC2483 16-Bit Delta-Sigma ADC Demo Board (Requires DC590)

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Product Details

DC955A: Demo Board for the LTC2483 16-Bit Delta Sigma ADC with Easy Drive Input Current Cancellation and I2C Interface.
DC955A
LTC2483 16-Bit Delta-Sigma ADC Demo Board (Requires DC590)
DC955A - Schematic

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