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LTC2497 Datasheet

LTC2497 Datasheet

16-Bit 8-/16-Channel ΔΣ ADC with Easy Drive Input Current Cancellation and I2C Interface
Part No.: LTC2497
Page: 30 Pages
Size: 525 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2023-10-26 14:22:38
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LTC2497 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LTC2497CUHF#PBF Tube 52 2497 1 38 0°C ~ 70°C 38-Lead (5mm × 7mm) Plastic QFN  
LTC2497CUHF#TRPBF Reel 500 2497 1 38 0°C ~ 70°C 38-Lead (5mm × 7mm) Plastic QFN  
LTC2497CUHF#TRMPBF Reel 2500 2497 1 38 0°C ~ 70°C 38-Lead (5mm × 7mm) Plastic QFN  
LTC2497IUHF#PBF Tube 52 2497 1 38 -40°C ~ 85°C 38-Lead (5mm × 7mm) Plastic QFN  
LTC2497IUHF#TRPBF Reel 2500 2497 1 38 -40°C ~ 85°C 38-Lead (5mm × 7mm) Plastic QFN  
LTC2497IUHF#TRMPBF Reel 500 2497 1 38 -40°C ~ 85°C 38-Lead (5mm × 7mm) Plastic QFN  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTC2497 Datasheet(PDF)

LTC2497 Datasheet(Picture)

LTC2497 Features

  • Up to Eight 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
  • 2-Wire I2C Interface with 27 Addresses Plus One Global Address for Synchronization
  • 600nVRMS Noise (0.02LSB Transition Noise)
  • GND to VCC Input/Reference Common Mode Range
  • Simultaneous 50Hz/60Hz Rejection
  • 2ppm INL, No Missing Codes
  • 1ppm Offset and 15ppm Full-Scale Error
  • 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 5mm × 7mm QFN Package

LTC2497 Applications

  • Direct Sensor Digitizer
  • Direct Temperature Measurement
  • Instrumentation
  • Industrial Process Control

LTC2497 Description

The LTC2497 is a 16-channel (eight differential), 16-bit, No Latency ΔΣ ADC with Easy Drive technology and a 2-wire, I2C 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 rail-to-rail input signals to be directly digitized while maintaining exceptional DC accuracy.

The LTC2497 includes 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. It automatically rejects line frequencies of 50Hz and 60Hz simultaneously.

The LTC2497 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.

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