LTC2487CDE#PBF

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1. Description

The LTC®2487 is a 4-channel (2 differential), 16-bit, Latency-free ∆S™ ADC uses Easy Drive technology and 2 wires, I²C interface. Patented sampling scheme eliminates dynamic input current errors and shortcomings On-chip buffering via automatic cancellation Differential input current. This allows large external sources Impedance and rail-to-rail input signal direct Digitize while maintaining excellent DC accuracy. LTC2487CDE#PBF includes programmable gain, high precision Temperature sensor and integrated oscillator. This device Can be configured to measure external signals (from a combination of 4 analog input channels operating in single-ended or differential mode) or its internal temperature sensor. Integrated temperature sensor provides 1/2°C Resolution and 2°C absolute accuracy. LTC2487 can Is configured to provide from 1 to 256 minutes and 8 steps. LTC2487 allows a wide common-mode input range (0V to VCC), independent of the reference voltage. any A combination of single-ended or differential inputs can be After being selected and converted for the first time, a new channel Is selected and effective. Access to the output of the multiplexer allows all optional external amplifiers to be shared Analog input and automatic calibration continue to eliminate They are related to offset and drift.

2. FEATURES

    1. Up to 2 Differential or 4 Single-Ended Inputs

    2. Easy Drive™ Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current

    3. Directly Digitizes High Impedance Sensors with Full Accuracy

    4. 2-Wire I2C Interface with 9 Addresses Plus One Global Address for Synchronization

    5. 600nV RMS Noise

    6. Programmable Gain from 1 to 256

    7. Integrated High Accuracy Temperature Sensor

    8. GND to VCC Input/Reference Common Mode Range

    9. Programmable 50Hz, 60Hz or Simultaneous 50Hz/60Hz Rejection Mode

  10. 2ppm INL, No Missing Codes

  11. 1ppm Offset and 15ppm Full-Scale Error

  12. 2x Speed/Reduced Power Mode (15Hz Using Internal Oscillator and 80µA at 7.5Hz Output)

  13. No Latency: Digital Filter Settles in a Single Cycle, Even After a New Channel is Selected

  14. Single Supply 2.7V to 5.5V Operation (0.8mW)

  15. Internal Oscillator

  16. Tiny 4mm × 3mm DFN Package

3. APPLICATIONS

    1. Direct Sensor Digitizer

    2. Direct Temperature Measurement

    3. Instrumentation

    4. Industrial Process Control

4. PIN CONFIGURATION

5. package instruction