LTC2481 Datasheet | Linear Technology

.. Features n n n n n n n n n n n n n n n LTC2481 16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation and I2C Interface DESCRIPTION The LTC®2481 bines a 16-bit plus sign No Latency ΔΣ™ analog-to-digital converter with patented Easy Drive technology and I2C digital interface. The patented sampling scheme eliminates dynamic input current errors and the shortings of on-chip buffering through automatic cancellation of differential input current. This allows large external source impedances and input signals, with rail-torail input range to be directly digitized while maintaining exceptional DC accuracy. The LTC2481 includes on-chip programmable gain, a temperature sensor and an oscillator. The LTC2481 can be configured through an I2C interface to provide a programmable gain from 1 to 256 in 8 steps, to digitize an external signal or internal temperature sensor, reject line frequencies (50Hz, 60Hz or simultaneous 50Hz/60Hz) as well as a 2x speed-up mode. The LTC2481 allows a wide mon mode input range (0V to VCC) independent of the reference voltage. The reference can be as low as 100m V or can be tied directly to VCC. The LTC2481 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. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No Latency Δ∑ and Easy Drive are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Patents Pending. Easy Drive™ Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current Directly Digitizes High Impedance Sensors with Full Accuracy Programmable Gain from 1 to 256 Integrated Temperature Sensor GND to VCC Input/Reference mon Mode Range 2-Wire I2C Interface Programmable 50Hz, 60Hz or Simultaneous 50Hz/60Hz Rejection Mode 2ppm...