LTC2484 - 24-Bit ΔΣ ADC with Easy Drive Input Current Cancellation

The LTC®2484 combines a 24-bit No Latency ΔΣ™ analogto- digital converter with patented Easy Drive™ technology. 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-to-rail input range to be directly digitized while maintaining exceptional DC accuracy.

The LTC2484 includes an on-chip oscillator. The LTC2484 can be configured to reject line frequencies. 50Hz, 60Hz or simultaneous 50Hz/60Hz line frequency rejection can be selected as well as a 2× speed-up mode.

The LTC2484 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 LTC2484 includes an on-chip trimmed oscillator, eliminating the need for external crystals or oscillators. Absolute accuracy and low drift are automatically maintained through continuous, transparent, offset and full-scale calibration.

  • Easy Drive Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current
  • Directly Digitizes High Impedance Sensors with Full Accuracy
  • 600nVRMS Noise
  • GND to VCC Input/Reference Common Mode Range
  • Programmable 50Hz, 60Hz or Simultaneous
  • /60Hz Rejection Mode
  • 2ppm INL, No Missing Codes
  • 1ppm Offset and 15ppm Total Unadjusted Error
  • Selectable 2× Speed Mode (15Hz Using Internal Oscillator)
  • No Latency: Digital Filter Settles in a Single Cycle
  • Single Supply 2.7V to 5.5V Operation
  • Internal Oscillator
  • Available in a Tiny (3mm × 3mm) 10-Lead DFN Package
Typical Application

  • Direct Sensor Digitizer
  • Weight Scales
  • Direct Temperature Measurement
  • Strain Gauge Transducers
  • Instrumentation
  • Industrial Process Control
  • DVMs and Meters
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2484CDD#PBF3x3 DFN-10C$3.50$2.45
LTC2484CDD#TRPBF3x3 DFN-10C$2.51
LTC2484IDD#PBF3x3 DFN-10I$4.20$2.94
LTC2484IDD#TRPBF3x3 DFN-10I$3.00
Demo Boards
Part NumberDescriptionPrice
DC2126ADC2126A High-Accuracy Wireless Temperature Sensor with Solar Battery Life Extender$175.00
DC939ALTC2484IDD Demo Board | 24-Bit Delta Sigma ADC w/Temp (req. DC2026)$50.00
Companion Boards
Part NumberDescriptionPrice
DC9000BSmartMesh IP Starter Kit (chip antennae), 100 mote capacity$750.00
DC9006AEterna Interface Card$100.00
DC9010BEterna Serial Programmer$399.00
DC9021ASmartMesh IP RF Certified Starter Kit (chip antennae), 100 mote capacity$875.00
DC2026CLinduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform$75.00
Design Note
Reliability Data
Product Selector Card
LT Journal
Press Release
Related Product
LTC2484 - 24-Bit ΔΣ ADC with Easy Drive Input Current Cancellation
DN368 - Easy Drive 增量累加模数转换器消除了输入电流误差
DN379 - Easy Drive ADCs Simplify Measurement of High Impedance Sensors
R461 Reliability Data
No Latency Delta-Sigma™ ADCs
Ultra-Tiny 16-Bit ΔΣ ADC Family
Mar 2007 - Easy Drive Delta-Sigma ADCs Deliver Powerful Features and Reduce Design Effort
Sep 2005 Connect High Impedance Sensors Directly to an Easy Drive Delta Sigma ADC
Wireless Precision Temperature Sensor Powers Itself, Forms Own Network, Enabling Easy Deployment in Industrial Environments
LTC2480 - 采用 Easy Drive 输入电流消除技术的 16 至 24 位 ∆∑ ADC 系列简化前端信号调节
LTC2484 Footprints and Symbols
LTC2484 - DC939A Linduino .INO File
LTC2484 Linduino .CPP File
LTC2484 Linduino Header File
LTC24XX – Linduino Header File
LTC24XX – Linduino.CPP File