LTC2494
Info: : PRODUCTION
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LTC2494

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

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $3.42
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
  • Programmable Gain from 1 to 256
  • 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/Reduced Power Mode (15Hz Using Internal Oscillator and 80μA at 7.5Hz Output)
  • No Latency: Digital Filter Settles in a Single Cycle, Even After a New Channel Is Selected
  • Single-Supply 2.7V to 5.5V Operation
  • Internal Oscillator
  • Tiny 5mm × 7mm QFN Package
Additional Details
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The LTC2494 is a 16-channel (8-differential), 16-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 LTC2494 includes programmable gain, 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 1/2°C resolution and 2°C absolute accuracy. The LTC2494 can be configured to provide a programmable gain from 1 to 256 in 8 steps.

The LTC2494 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.

Applications

  • Direct Sensor Digitizer
  • Direct Temperature Measurement
  • Instrumentation
  • Industrial Process Control
Part Models 4
1ku List Price Starting From $3.42

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC2494CUHF#PBF
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LTC2494CUHF#TRPBF
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LTC2494IUHF#PBF
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LTC2494IUHF#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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DC1011A-C

LTC2494 16-bit, 8-ch Easy Drive ADC with Temp Sensor, PGA (requires DC590B)

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