LTC2487
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LTC2487

16-Bit 2-/4-Channel ∆Σ ADC with PGA, Easy Drive and I2C Interface

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Part Details
Part Models 4
1ku List Price Starting From $2.84
Features
  • Up to 2 Differential or 4 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 9 Addresses Plus One Global Address for Synchronization
  • 600nV RMS 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/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 (0.8mW)
  • Internal Oscillator
  • Tiny 4mm × 3mm DFN Package
Additional Details
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The LTC2487 is a 4-channel (2 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 LTC2487 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 4 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 LTC2487 can be configured to provide a programmable gain from 1 to 256 in 8 steps.

The LTC2487 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 4
1ku List Price Starting From $2.84

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Feb 20, 2022

- 21_0269

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC2487CDE#PBF

PRODUCTION

LTC2487CDE#TRPBF

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LTC2487IDE#PBF

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Filter by Model

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Part Models

Product Lifecycle

PCN

Feb 20, 2022

- 21_0269

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Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC2487CDE#PBF

PRODUCTION

LTC2487CDE#TRPBF

PRODUCTION

LTC2487IDE#PBF

PRODUCTION

LTC2487IDE#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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DC1010A-C

LTC2487 | 16-bit 4/2-channel I2C Easy Drive ADC (Requires DC590B)

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