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24-Bit ΔΣ ADC with Easy Drive Input Current Cancellation
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LTC2484
24-Bit ∆Σ ADC with
Easy Drive Input Current Cancellation
Features Description Easy Drive Technology Enables Rail-to-Rail Inputs
with Zero Differential Input Current
n Directly Digitizes High Impedance Sensors with
Full Accuracy
n 600nV
RMS Noise
n GND to V
CC Input/Reference Common Mode Range
n Programmable 50Hz, 60Hz or Simultaneous 50Hz/60Hz Rejection Mode
n 2ppm INL, No Missing Codes
n 1ppm Offset and 15ppm Total Unadjusted Error
n Selectable 2× Speed Mode (15Hz Using Internal
Oscillator)
n No Latency: Digital Filter Settles in a Single Cycle
n Single Supply 2.7V to 5.5V Operatio Internal Oscillator
n Available in a Tiny (3mm × 3mm) 10-Lead DFN Package The LTC®2484 combines a 24-bit No Latency ∆Σ™ analogto-digital converter with patented Easy Drive™ technology.
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 input …
