LTC2498
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LTC2498

24-Bit 8-/16-Channel ΔΣ ADC with Easy Drive Input Current Cancellation

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 6
1ku List Price Starting From $4.13
Features
  • Up to 8 Differential or 16 Single-Ended Inputs
  • Easy Drive Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current
  • Directly Digitizes High Impedance Sensors with Full Accuracy
  • 600nVRMS Noise
  • Integrated High Accuracy Temperature Sensor
  • GND to VCC Input/Reference Common Mode Range
  • Programmable 50Hz, 60Hz or Simultaneous 50Hz/60Hz Rejection Mode
  • 2ppm INL, No Missing Codes
  • 1ppm Offset and 15ppm Full-Scale Error
  • 2x Speed Mode (15Hz Using Internal Oscillator)
  • No Latency: Digital Filter Settles in a Single Cycle, Even After a New Channel Is Selected
  • Single Supply 2.7V to 5.5V Operation (0.8mW)
  • Internal Oscillator
  • Tiny QFN 5mm × 7mm Package
Additional Details
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The LTC2498 is a 16-channel (8-differential) 24-bit No Latency ΔΣ ADC with 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 rail-to-rail input signals to be directly digitized while maintaining exceptional DC accuracy.

The LTC2498 includes a high accuracy temperature sensor and an integrated oscillator. This device can be configured to measure an external signal (from combinations of 16 analog input channels operating in single ended or differential modes) or its internal temperature sensor. The integrated temperature sensor offers 1/30th °C resolution and 2°C absolute accuracy.

The LTC2498 allows a wide common mode input range (0V to VCC), independent of the reference voltage. Any combination of single-ended or differential inputs can be selected and the first conversion after a new channel is selected is valid. Access to the multiplexer output enables optional external amplifiers to be shared between all analog inputs and auto calibration continuously removes their associated offset and drift.

Applications

  • Direct Sensor Digitizer
  • Direct Temperature Measurement
  • Instrumentation
  • Industrial Process Control
Part Models 6
1ku List Price Starting From $4.13

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC2498CUHF#PBF
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LTC2498CUHF#TRPBF
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LTC2498HUHF#TRPBF
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LTC2498IUHF#PBF
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LTC2498IUHF#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

Can't find the software or driver you need?

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Evaluation Kit

Evaluation Kits 2

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DC1410A-A

LTC2498 Demo Board | Load Cell Digitizer Application, Requires DC2026C

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DC1410A-A

LTC2498 Demo Board | Load Cell Digitizer Application, Requires DC2026C

LTC2498 Demo Board | Load Cell Digitizer Application, Requires DC2026C

Product Detail

Demonstration circuit 1410A shows a compact, high resolution solution for measuring Wheatstone bridge type sensors for load, pressure, temperature, acceleration, and many other physical quantities.


Assembly type A features the LTC2498, an 8-/16-channel, 24-bit ΔΣ ADC with easy drive inputs. Key DC specifications include 2ppm INL, 1ppm offset, 25ppm full-scale error and 10nV/°C offset drift. In the 6.8Hz/600nVRMS mode, input normal mode rejection of 50Hz and 60Hz noise is better than 87dB.

reference details image

DC1011A-A

LTC2498 Demo Board | 24-bit, 8-Channel ADC, Requires DC2026

Tools & Simulations

Tools & Simulations 1

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

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