LTC2497

PRODUCTION

16-Bit 8-/16-Channel ΔΣ ADC with Easy Drive Input Current Cancellation and I2C Interface

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Overview

  • 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

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.

Applications

  • Direct Sensor Digitizer
  • Direct Temperature Measurement
  • Instrumentation
  • Industrial Process Control
LTC2497
16-Bit 8-/16-Channel ΔΣ ADC with Easy Drive Input Current Cancellation and I2C Interface
Easy Drive Data Acquisition System +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 2

Data Sheet

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

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Software Resources

Device Drivers 1

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
Level Translators & Buffers 1
LTC4317
PRODUCTION Dual I2C/SMBus Address Translator
Matched Resistors & Transistors 1
LT5400
RECOMMENDED FOR NEW DESIGNS Quad Matched Resistor Network
Oscillators 1
LTC6991
PRODUCTION TimerBlox: Resettable, Low Frequency Oscillator
Voltage References 1
LTC6655
PRODUCTION 0.25ppm Noise, Low Drift Precision References
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Tools & Simulations

Linduino 5

LTpowerPlay®

LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.

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Evaluation Kits

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schematic 5
DC1012A-B

LTC2497 Demo Board | 16-bit, 8-ch I2C Easy Drive ADC (requires DC2026)

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Product Details

DC1012A-B: Demo Board for the LTC2497 16-Bit 8-/16-Channel ΔΣ ADC with Easy Drive Input Current Cancellation and I2C Interface
DC1012A-B
LTC2497 Demo Board | 16-bit, 8-ch I2C Easy Drive ADC (requires DC2026)
DC1012A-B Demo Board DC1012A-B Demo Board DC1012A-B Demo Board DC1012A-B Demo Board DC1012A-A - Schematic

Reference Designs

Arria 10 SoC - Top View
Arria 10 SoC - Top View
Arria 10 SoC - Bottom View
Arria 10 Soc Dev Kit Block Diagram
Arria 10 SoC Power Tree
Altera Arria 10 SoC Development Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
DE-10 Nano Kit
DE-10 Nano Kit
DE-10 Nano Kit Block Diagram
DE-10 Nano Power Tree
Terasic DE10-Nano Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
Altera Arria 10 SoC Development Kit
Arria 10 SoC - Top View
Arria 10 SoC - Bottom View
Arria 10 Soc Dev Kit Block Diagram
Arria 10 SoC Power Tree
Terasic DE10-Nano Kit
DE-10 Nano Kit
DE-10 Nano Kit Block Diagram
DE-10 Nano Power Tree

Latest Discussions

17 Weeks Ago
Decoding the i2c data to voltage
1 Years Ago
ESD rating
1 Years Ago
I am using LTC2497 ADC to measure voltage of TMCS1107B-Q1 and convert it into current for measuring the AC load current. However, I am not obtaining accurate readings.
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