LTC2482

LTC2482 16-Bit ∆Σ ADC with Easy Drive Input Current Cancellation DESCRIPTIO The LTC®2482 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 LTC2482 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 noise level is 600nV RMS independent of VREF. This allows direct digitization of low level signals with 16bit accuracy. The LTC2482 includes an on-chip trimmed oscillator, eliminating the need for external crystals or oscillators and provides 87dB rejection of 50Hz and 60Hz line frequency noise. Absolute accuracy and low drift are automatically maintained through continuous, transparent, offset and full-scale calibration. , LTC and LT are registered trademarks of Linear Technology Corporation. No Latency ∆Σ and Easy Drive are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Patent pending. FEATURES Easy Drive Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current ■ Directly Digitizes High Impedance Sens...