LTC2480IMS#TRPBF

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1. DESCRIPTION

The LTC2480IMS#TRPBF combines a 16-bit plus sign No Latency ∆Σ™ analog-to-digital converter with patented Easy Drive™ technology. The patented sampling scheme eliminates dynamic input current errors and the shortcomings of onchip buffering through automatic cancellation of differential input current. This allows large external source impedances and input signals, with rail-to-rail input range to be directly digitized while maintaining exceptional DC accuracy. The LTC2480IMS#TRPBF includes on-chip programmable gain and an oscillator. The LTC2480IMS#TRPBF can be configured to provide a programmable gain from 1 to 256 in 8 steps, measure an external signal or internal temperature sensor and reject line frequencies. 50Hz, 60Hz or simultaneous 50Hz/60Hz line frequency rejection can be selected as well as a 2x speed-up mode. The LTC2480IMS#TRPBF allows a wide common mode input range (0V to VCC) independent of the reference voltage. The reference can be as low as 100mV or can be tied directly to VCC. The LTC2480IMS#TRPBF includes an on-chip trimmed oscillator eliminating the need for external crystals or oscillators. Absolute accuracy and low drift are automatically maintained through continuous, transparent, offset and full-scale calibration.

2. FEATURES

    1. Extended Temperature Range of –40°C to 125°C

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

    3. Directly Digitizes High Impedance Sensors with Full Accuracy

    4. Programmable Gain from 1 to 256

    5. GND to VCC Input/Reference Common Mode Range

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

    7. 2ppm (0.25LSB) INL, No Missing Codes

    8. 1ppm Offset and 15ppm Full-Scale Error

    9. Selectable 2x Speed Mode (15Hz Using Internal Oscillator)

  10. No Latency: Digital Filter Settles in a Single Cycle

  11. Single Supply 2.7V to 5.5V Operation

  12. Internal Oscillator

  13. Available in a Tiny (3mm × 3mm) 10-Lead DFN Package and 10-Lead MSOP Package

3. APPLICATIONS

    1. Direct Sensor Digitizer

    2. Weight Scales

    3. Direct Temperature Measurement

    4. Strain Gauge Transducers

    5. Instrumentation

    6. Industrial Process Control

    7. DVMs and Meters